Transcript Intertex Data AB, Sweden

Overview of an Internet+ Model
Prepared for:
INGATE’S SIP TRUNK – UC SEMINARS:
SIP Trunking, Video, Collaboration and More
ITEXPO Conference, Miami, February 2012
By:
Karl Erik Ståhl
President Intertex Data AB
CEO and Chairman Ingate Systems AB
[email protected]
Also see:
http://www.ingate.com/files/An_Internet+_Model_for_Global_Unified_Communication.pdf
Internet+ Whitepaper (in progress)
Live Demo Presentation from ITEXPO SIP Trunking Summit Miami, February 2011!
http://www.ingate.com/files/ITEXPO_Miami_2011_Presentations/Intertex%20-%20UC%20Across%20the%20Borders.pps
2012Intertex
IntertexData
DataAB
AB
©©2012
1
More on the Internet+ Model
Today 1st, 1:30 pm :
Overview of an Internet+ Model
Thursday 2nd, 1:00 pm : Video-Over-IP
Driving the Need for an Internet+
Friday 3rd, 9:00 am :
BoF, Room A208
Birds-of-a-Feather , Session
Also see:
http://www.ingate.com/files/An_Internet+_Model_for_Global_Unified_Communication.pdf
Internet+ Whitepaper (in progress)
Live Demo Presentation from ITEXPO SIP Trunking Summit Miami, February 2011!
http://www.ingate.com/files/ITEXPO_Miami_2011_Presentations/Intertex%20-%20UC%20Across%20the%20Borders.pps
http://www.ingate.com/itexpo_miami_2012.php
http://www.ingate.com/files/itexpo_miami_2012/Intertex-BoF_Internet+.pps
2012Intertex
IntertexData
DataAB
AB
©©2012
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Intertex & Ingate
 Same parent company
 Intertex: SMB, SOHO and home SIP Firewalls and E-SBCs
• For service provider volume deployment
 Ingate: Enterprise and SMB SIP Firewalls and E-SBCs
• SIParators® for enterprises and projects
 Cooperation in management and development
 Co-developed SIP code
 Ingate represents Intertex in the US
© 2012 Intertex Data AB
3
SIP Trunking: We are Hooking up IP-PBXs to ITSPs
SIP Trunking
SIP System Provider
PSTN
SIParator®
IP-PBX
Data & VoIP LAN
© 2012 Intertex Data AB
4
Confirmed Interoperability: Ingate & Intertex
SIP Trunk Providers
 360 Networks
 Airespring
 AT&T
 BandTel
 Bandwidth.com
 Broadvox
 BT (British Telecom)
 Cablevision
 Cbeyond
 Cellip
 Comm Partners
 Cordia Corporation
 Deltacom
 Excel Switching
 Gamma Telecom
 GEOS
 Global Crossing
 IP-Only
 Nectar
 Level 3
 Netlogic
 Netsolutions
 Nexvortex
 Nuvox
 O1
 One Communications
 Paetec
 Primus
 RNK Telecom
 Skype
 TDC
 Telavox
 Tele2
 Tele Pacific
 Teletek
 TeliaSonera
 Toplink
 Tritel
 VoEX
 Voice Flex
 VoIP Unlimited
 Voxbone
 Voxitas
 XeloQ
More in pipeline...
Carrier Equipment
 Acme Packet
 Broadsoft
 Genband
 Sonus
 Sylantro
 SER
 NSN
More in pipeline…
IP-PBXs
SIP Trunk
Compliant with
 Aastra
 Aastra/Ericsson MX One
 Adtran UC Server
 Digium/Asterisk
 Avaya Aura
 Avaya IP Office
 Avaya SES/CM
 Avaya QE
 Brekeke
 Broadsoft
 Cisco
 Fonality
 HP/3Com -VCX
 Innovaphone
 Interactive Intelligence
 Iwatsu
 LG Nortel
 Microsoft OCS
 Mitel
 NEC / Sphere
 Nortel BCM
 Nortel SCS
 Objectworld
 Panasonic
 Samsung
 SER
 Shoretel
 Siemens
 SIP-Gear
 Swyx
More in pipeline....
Are we Finally Getting it All Together?
 POTS and PSTN have been there for 100 years
RJ11
Black
Phone
3.5 kHz
isn’t HiFi,
but MOS
is 5!
 Now we have a new global network: The IP Networks
 And we have a new standard: SIP
RJ45
IP Phone
Soft Client
WiFi Mobile
Presence
LAN
Intranet
Internet
Messaging
© 2012 Intertex Data AB
Voice
Video
6
Sorry, it’s POTSoIP
 SIP has been Used to Replace Pieces of the PSTN
Maintaining Old Structures  POTSoIP

We had a cloud that
could transport all
communication,
including voice and UC.

Today, we use the
Internet for all smart
communication, but
lack global real-time
communication,
multimedia or UC.

We get the 100 years
Plain Old Telephony
Service (POTS) maybe cheaper and
more flexible. But is this
the way forward?
Session Delivery Network (SDN) and IMS
© 2012 Intertex Data AB
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It’s Not Even Good for FAXing
 And Carriers Peer their Networks PSTN Style…
It is even destructive for the 160 years old Fax service*
* Mike Coffee, CEO of
Commetrex: Work in progress
by SIP Forum’s FoIP Task
Group and the i3 Forum.
T.38 works fine in one hop!
 And their billing is by voice minutes – Far away from any UC!
 And where did the reliability, scalability and good performance of IP go?
© 2012 Intertex Data AB
8
Internet has Shown the Success of a Cloud!
We need this for global UC:
SIP Connect 1.1
Internet+
With:
1. All you can do with SIP - UC
2. Full mobility
3. Numbers and SIP addresses
4. Quality up to Telepresence
5. Interoperability – Don’t GW,
unless required
6. Delivery to the users
But got this (SDN/IMS):
(Wires on top of the cloud!? Wasn’t
creating the cloud the success?)
Internet
MPLS
Session Delivery Network (SDN) = POTSoIP
Provide Internet+ so we can get Telephony+
 UC rich communication (not just AM radio quality Voice): Bring the
islands (Enterprise UC LAN, Skype, Google Talk and others) together!
 Deliver to the users: On LANs and with Smart Phones!
 UC should be global, with quality and with phone numbers as well as
SIP-addresses!
© 2012 Intertex Data AB
10
We Are (sometimes) Doing Better!
SoftSwitch/SBC
Overlay
PSTN
UC Voice Mail
Remote
Users
SIParator®
Ingate/Intertex E-SBCs
enable SIP based Live
UC Across the Borders!
(SIP does not traverse
ordinary NAT/Firewalls.)
IP-PBX
Data & VoIP LAN
Users and Services can be Everywhere: SIP must connect there!
© 2012 Intertex Data AB
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SIP is Self Routing and E-SBCs Can Do it All
Qwest
Deutsche Telecom
Internet
MPLS
TeliaSonera Internet
QoS IP Network
QoS IP Network
AT&T
MPLS
MPLS
ENUM
C
D
R
C
D
R
SIParator
IX78
© 2012 Intertex Data AB
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So, Don’t Just Feed SIP Into POTSoIP…
ONLY FOR
POTS
SoftSwitch/SBC
Overlay
PSTN
UC Voice Mail
Remote
Users
SIParator®
Follow standards so we
don’t need gateways, here,
there and everywhere!
IP-PBX
We do everything else
successfully,
flat over the
Data & VoIP
LAN
Internet. Please let us
have the same for all realtime communication also.
The Internet+ Thanks!
© 2012 Intertex Data AB
13
Time for Something Better: Internet+
Learn from the success of the Internet:
Networks shall Not Be Application Specific!
The Internet+:
A non application-specific transport network: Just like the Internet!
It IS the Internet – just extended:
+ Delivery to the users, on LANs and to smart phones
+ Prioritization for real-time traffic - Just enable diffserv
+ Metering and charging of “beyond Internet usage”
Good for everyone:
also for the Telcos:
The SDN is not needed,
Provide something better,
- IP connects end-to-end
- and users will pay for it..
- SIP is a self-routing
 Bill the better!
© 2012 Intertex Data AB
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Time for Something Better: Internet+
Learn from the success of the Internet:
Networks shall Not
Be Application
Specific!
Enable
the new
services,
interoperability
and the standard we
+:
The Internet
and
want!
A non application-specificneed
transport
network:
Just like the Internet!
It IS the Internet – just extended:
the same
time:
+ Delivery to the users,At
on LANs
and to smart
phones
+ Prioritization for real
time traffic
- Justrevenue
enable diffserv
- New
Telco
+ Metering- and
charging
of “beyond
Internet usage”
Vast
Telco
infrastructure
savings
Good for everyone:
How to also
do?for the Telcos:
The SDN is not needed,
Provide something better,
Easier than believed!
- IP connects end-to-end
- and usrs will pay for it..
- SIP is a self-routing
© 2012 Intertex Data AB
 Bill the better!
15
It Should be of Utmost Interest for the Telcos
Internet and Telephony Economy
Internet
+ Economy
Bandwidth Usage
Data
Low Charged
Internet
Bandwidth
Data
Skype etc.
RTC
RTC
Telephony+
Telephony Income (highly charged)
Quality
Bandwidth
New Income
 For real-time usage, we need an Internet pipe with prioritization enabled not just for telepresence quality, but also for 2G, 3G and 4G mobile real-time
usage with smart phones
 Has to be charged separately. If not, it would be used for everything and we are
back at all usage being at the same quality level.
 And we don’t want our smart phone batteries drained
 And we want to use both phone number and addresses – not the many island.
© 2012 Intertex Data AB
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For the Telephony+ Services
For a Telephony+ service (including POTS):
+ SIP is the standard to use. All SIP transported everywhere!
 The SIP interface must be available everywhere and the network carry anything
possible with SIP, both for users and services.
 The Network shall not interfere – not be application specific – that is between users
and services. SIP proxies are allowed, but
 Gateways and B2BUA are only allowed toward outside elements
+ Usage of E.164 numbers in addition to SIP address
+ Telcos must share numbers in a common database
+ ENUM convert numbers to SIP addresses (and other addresses, possibly Skype)
+ Gateways in and out to the other islands.
+ Trust between participants (like having a telephony
subscription/telephone line/number today)
© 2012 Intertex Data AB
17
Internet+ Model
The Internet with Quality Enabled
Global IP Transport Network
SIP Connect 1.1
PKI
DNS
EMS
ENUM
TR069
All SIP Routed Everywhere (Not Gatewayed! Via SIP Proxies – Not B2BUAs)
The TOQrouter – Trust, Openness, Quality – is a routing SIP proxy, a billing meter, and with built in SBC.
For the Telcos To Do
 Enable diffserv on Internet+ Accesses
(Or provide separate high quality pipe on routable IP.)
 Provide ENUM directory (public or private)
E.164 numbers to SIP address resolution
 Peer higher quality pipes with other carriers
just as for Internet
Share ENUM between the Carriers
 Deploy TOQrouters* – similar to clever ESBCs used for SIP Trunking
Manage as already done in volume deployments
Provide Certificates to the TOQrouter for trust
TOQ routers use mutual TLS for all WAN SIP
 Pick up CDRs from the TOQrouter and Bill
* TOQ stands for Trust, Openness, Quality
© 2012 Intertex Data AB
19
For mobile and Our SmartPhones
Internet+
 Just replace today’s network firewall
with the TOQrouter* and use the IP
channel for good real-time
communication also
  No more battery draining 
(keep-alive packets not needed)
4G 3G 2G
 Forget about VoLTE in 4G networks.
It is POTSoIP again…
 No more ”mobility plumbing”
needed: SIP reaches everywhere!
* TOQ stands for Trust, Openness, Quality
© 2012 Intertex Data AB
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Most Important: SIP Everywhere – Just like HTTP!
We would not have the Web, if HTTP did not go between the Browser and the Web server.
Today SIP is stopped and limited by Firewall/NATs, SoftSwitches and bad SBCs.
The TOQrouter is a standard compliant SIP proxy (and SBC) that routes all SIP between the
Users and Servers according to RCF 3261. The TOQrouter is not interfering with the usage
of the SIP communication (like today’s plumbing), but can measure the usage for billing.
Proper SIP transport (by routing
SIP proxies) is required:
• For all beyond POTS usage, UC
• For eliminating network
incompatibilities – Interop issues
are then reduced to being only
between clients and services
• For mobility: User and services
can be anywhere!
• For global UC: Clients, PBXs,
Cloud services etc. only have to
use a standard SIP interface.
There is no other way to go!
More on the Internet+
Thursday 2nd, 1:00 pm : Video-Over-IP, Room B114/B115
Driving the Need for an Internet+
Friday 3rd, 9:00 am :
BoF, Room A208
Birds-of-a-Feather , Session
Intertex Data AB
Ingate Systems Inc.
www.intertex.se
[email protected]
Rissneleden 45
SE-174 44 Sundbyberg
Sweden
sip:[email protected]
Tel: +46 8 6282828
www.ingate.com
[email protected]
7 Farley Road
Hollis, NH 03049
United States
Ph: +1 (603) 883-6569
Tel sv: +46 8 6007750
© 2012 Intertex Data AB
22
More on the Internet+
Thursday 2nd, 1:00 pm : Video-Over-IP, Room B114/B115
Driving the Need for an Internet+
More of the Internet+
Friday 3rd, 9:00 am :
BoF, Room
model
in A208
the
Birds-of-a-Feather , Session
following slides
Intertex Data AB
Ingate Systems Inc.
www.intertex.se
[email protected]
Rissneleden 45
SE-174 44 Sundbyberg
Sweden
sip:[email protected]
Tel: +46 8 6282828
www.ingate.com
[email protected]
7 Farley Road
Hollis, NH 03049
United States
Ph: +1 (603) 883-6569
Tel sv: +46 8 6007750
© 2012 Intertex Data AB
23
Really Possible? – Don’t we need this?
Will there then be
another 10 years
before Internet+, or?
All standards and
all elements are
ready to use.
No IMS multimedia call across carrier domains after 5
years of deployment. But POTS on RJ11 delivered…
© 2012 Intertex Data AB
And they can be
introduced
step-by-step!
24
The TOQrouter Can Be The Registrar
YOU Shall Decide Whom To Accept Calls From
Example using the Intertex IX78 as TOQrouter:

The TOQrouter is a good registrar, but the registrar can be located anywhere


Your Buddy list and below allows you whom to communicate with
Those on the “Trusted Network” will be the Telephony subscribers as before
Exists on Proxy level and
individual User level
Most of the Gear is Already in Use
…but not (yet) for Internet+
Internet
IP-TV
VoD
VLANs or ADSL
Virtual Circuits
IMS
VoIP
TR-069
WiFi
The Multimedia LAN
IPPBX
PDA
Telepresence
In the above deployment, the
Intertex IX78 E-SBC is used for SIP
trunking, but is actually capable of
TOQrouter functions.
This major European Telco has a
high quality VoIP network using
white addresses and is routed to the
Internet. An Internet+ model would
here simply mean IP peering their
VoIP IP network to other service
providers’ high quality networks,
supplying an ENUM database and
relying on CDRs delivered to the
management system.
The Intertex IX78 already provides
the clean SIP interface to LAN
endpoints and servers on the LAN,
in parallel with its gateway approach
toward the PBX and the IMS system.
The SIP Standard: Global and More Than Voice!
 Today over the Internet, but then:
 not always sufficient quality
 difficult to bill by usage (Telcos’ core business…)
 and the NAT/Firewall traversal issue must be
resolved
 Telcos have feared another Skype… But Telcos
don’t like
another
Skype. Need
to offer more
to bill…
© 2012 Intertex Data AB
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Billing – CDRs for Efficient Processing
Now also with Video Call Metrics and Pipe Used!
CDRs with Call Quality Metrics – View from iEMS (our TR-69 management system)
© 2012 Intertex Data AB
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Can the “Core” Soft Switch/SBC Participate?
 Sure - it can be a SIP Registrar - which could be used instead of the registrar
in the TOQrouter (In an Internet+ model, a SIP server can be everywhere!).
 As a routing element; It must be a compliant SIP Proxy (B2BUAs/Gateways
must not be in the transport part of the network)!
 It must only route PSTN calls into the POTSoIP overlay
 It could do some
individual forwarding
etc. of incoming calls
(instead of the
TOQrouter) –IF
behaving like a SIP
Proxy
 The TOQrouter will be
required anyway
© 2012 Intertex Data AB
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Why are there SDN and IMS?
 IMS world said (but could not deliver):
 “Evolving broadband communication by launching new services cost-efficiently“
 “People want an enriched communication experience, anywhere, anytime, and to any device.
By XXX IMS technology operators are able to cost efficiently deliver that experience and to
generate revenue”
 An SDN, but not today’s transport network, the Internet, may achieve:
 service providers can bill for their services,
 the ability to use a higher quality IP transport network,
 the ability to only allow trusted users - that is, subscribers to a service provider - to
participate in the communication,
 fulfilling lawful intercept requirement and
 fulfilling emergency calling requirements.
 The Internet+ model provides the above better, while maintaining:




reliability (no introduction of massive central elements)
scalability (no introduction of massive central elements)
good performance of a global IP transport network
Interoperability (no multiple conversions, no interference with SIP).
© 2012 Intertex Data AB
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The TOQrouter



A Firewall/NAT (with general Firewall security functions)
An RFC 3261 compliant SIP Proxy also implementing RFC 3263 and RFC 3264
The SIP Proxy performing ALG functions by:
- handling and being aware of its NATed environment (by reading the IP routing table)
- reserving NAT ports and rewriting the SDP accordingly (according to the Midcom RFC 3989)
- setting up the NAT and opening pinholes for the media in the Firewall (according to the Midcom RFC 3989)

The SIP Proxy implementing RCF 3325 (trusted networks):
 - using mutual TLS and certificates towards SIP Proxies on the WAN








Having functions for classifying SIP traffic to assign correct QoS class, based on various conditions
A SIP Registrar for (i) keeping and using registrations from LAN connected devices – a Shadow
registrar - to allow incoming calls. This (shadow) registrar should also be able to handle RFC 6140
Gin registration for a PBX. (ii) Being the main registrar for one or several domains.
A function and setup for SIP Domain forwarding to local SIP Servers, e.g. an IP-PBX on the LAN to
be used by remote users.
A dial plan with ENUM look-up to allow E.164 numbers to be used, as described below
QoS based routing, to select correct IP interface, in case special QoS WAN pipes are provided
The TOQmeter– A meter for billing purposes plus trust for the provider
A management interface and protocol, allowing very high network scalability, with trust and
security to allow CDR delivery over a public network (TR-069, sending CDRs in Informs is
recommended.)
The TOQrouter is also the point where a legal requirement of intercept can be fulfilled. And it can
aid emergency calling since its physical location usually is known. (RFC 6442)
© 2012 Intertex Data AB
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The TOQrouter
Optionally, the TOQrouter may include:

Functions in the SIP proxy for improved compatibility towards SIP devices

Gateway functions in a B2BUA for extended compatibility improvements towards non SIP
incompatible devices (e.g. for connecting a variety of PBXs)

Firewall and NAT functions for data traffic

Analog telephone ports (for connecting POTS ports)

Triple play capability, by handling separate IP interfaces for Internet, VoIP/IMS and IP-TV and
VoD etc.

An access modem/router, e.g. for DSL, Cable, GPON, VLAN Ethernet, T1, MPLS

Multimedia capable PBX functionality using the available SIP Proxy and SIP Registrar

Other useful Business and Residential Gateway functions
Notice that these kind of functions must not be confused with, or interfere with, the basic
TOQrouter functions!
© 2012 Intertex Data AB
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What SIP to Use? – Just SIP!
Internet+ does not interfere – Just transports/routes (as HTTP or SNTP)
It is between the endpoints: Between Users and Servers!
For all endpoints using SIP in the Internet+ model, minimum:







RFC 3261 SIP: Session Initiation Protocol
RFC 3263 SIP: Locating SIP Servers – DNS usage, plus
RFC 3264 An Offer/Answer Model with the Session Description Protocol (SDP)
RFC 4028 Timer
RFC 6442 Geolocation header (for emergency calling)
RFC 3325 For endpoints wanting to set Privacy Policies
G.711 codec for minimum voice interoperability
For endpoints wanting confirmed early media (telephones):

RFC 3262 SIP: Prack/100rel for early media
For endpoints using call transfer and similar:



RFC 3515 Refer
RFC 3891 Replaces
RFC 3892 Referred-by
© 2012 Intertex Data AB
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What SIP to Use? – Just SIP!
(continuation)
Internet+ does not interfere – Just transports/routes (as HTTP or SNTP)
For Presence endpoints:



RFC 3265
RFC 3856
RFC 3863
For IM endpoints:

RFC 3428
For servers supporting endpoints (e.g. an IP-PBX) if they want the option of
authenticating their users:


RFC 3325 Asserted Identity within Trusted Networks
RFC 6140 (Gin Registration) or use fix IP ITSP IP address when using SIP Connect 1.1
Extensions, such as (most of?) the IMS additions, will be transported correctly by the
TOQrouter.
© 2012 Intertex Data AB
34
Smooth Way Toward Internet+
Can Introduce Step-by-Step (and per user):
while using existing POTS/
PSTN interop until all on IP
 SIP Trunk Provider: Can use TOQrouter and directly offer Global UC




Flat rate over current Internet now, add +pipe with quality and billing later
TOQrouter routes PSTN calls directly over today’s SIP trunk
If on Internet now: Turn on diffserv on carriers network, +peer with other carriers later
If on quality pipe now: Use white IP addresses and +peer settlement free with others
 Triple Play Provider: Can use TOQrouter and directly offer Global UC




TOQrouter presents a single LAN with global UC and telephony on the quality cloud
Flat rate first, add other price plans and billing later
TOQrouter can still route PSTN calls over today’s SIP-trunk
Use white IP addresses on quality cloud and +peer with other carriers
 Mobile 3G, 4G Provider: Can use TOQrouter and directly offer Global UC





Battery draining by keep-alive packets gone!
Turn on diffserv in own network and offer quality to own users
Flat rate first - add other price plans and billing later
Use white IP addresses and +peer quality clouds with other carriers later
No need for VoLTE (it is just complicated POTS)
© 2012 Intertex Data AB
35
User-FAQ 1
Q First tell me: Is my new fine smart phone faulty or has the vendor lied to me about
the battery time? It ran out of battery in half a day instead of the promised week!
Did you use it a lot?
No, I didn’t even talk in it - Only had IM and presence on for a few friends that use
GoogleTalk.
That is one of the problems an Internet+ access will address!
Today’s mobile operators don’t give you Internet access where you can be reached
when needed! The real-time services that need to reach your smartphone (e.g. incoming
calls, IM or presence), therefore sends frequent keep-alive packets to make the Telco
firewall keep a door open so you can be reached. Those keep-alive packets stop your
smartphone from battery-save mode when not used. That drains your battery.
© 2012 Intertex Data AB
36
User-FAQ 2
Q What? Can I get another mobile subscription that doesn’t fool me like that? They
said I would get all features and functions with my new smartphone 
A few mobile providers give you a clean public IP address, but most mobile providers
don’t offer that, in spite of Internet access and promises.
Incoming signals to your phone comes over a Phone Channel that are kept for the Plain
Old Telephony Service (POTS) (the actual Phone in your smart phone).
Q Can I get the IM and presence there then?
Sorry – that’s only for the old voice. They have built the POTS service into the network
itself, so you won’t get the new ways of communication on the “phone channel”...
Q Until I get 4G – That is all IP I’ve heard…
Sorry again… They just built VoLTE on top of IP – a special “phone cannel” only getting
POTS again.
© 2012 Intertex Data AB
37
User-FAQ 3
Q But that is 100 years old and its sounds worse than AM radio. What is happening?
Internet has given us so much – They said SIP and then IMS would give us all
possible things!?
Wait, Internet+ will correct it all – It is easy to implement, soon…
Q Can I use both GoogleTalk and SkypeTalk then?
Would you rather not like to use a global IM and presence service using the
standardized protocol SIP, so everyone can reach everyone else?
Q  You mean I won’t have 3 or so different soft clients running then? But those
that already use Skype or GoogleTalk then?
Hopefully proprietary services, not following the standard, will have gateways into a
global standard (like they do with voice/telephony) so everyone reaches each other. Or
they can simply use the standard and we can join the islands.
It would really be great if people did not have to call me on my phone to ask me to
start my Skype client and such things! Give me that!
© 2012 Intertex Data AB
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User-FAQ 4
Q But the sound of GoogleTalk and Skype on my smartphone make them unusable,
even though those often are better on my stationary PC? Will that be fixed?
Internet+ will release the real capacity over the Internet SIP channel!
Q … really? More than 3.5 or 7 kHz? I still can hear 15 kHz!
Yes! With Internet+ you can also get video conferencing with telepresence quality. It is
not restricted and built into the network anymore. It simply becomes better and can
develop with the ever increasing power and capacity!
Q Wow - And the same on my fixed and mobile devices?
Of course! – It is the cloud now again. Internet+ is just the Internet improved for real-time
communication! You should get it all everywhere – The benefit of the cloud!
Q And can I forward my communication to my other phones and even Skype and
other clients?
Yes, that should be a function you access in your SIP server, which can be in the
TOQrouter. Example from Intertex IX78:
© 2012 Intertex Data AB
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Business User-FAQ 5
Q Can I then participate with my smartphone in my company’s telepresence
conferences? It would mean a lot to me if I can reduce my travelling and instead
use the fine screens and cameras in my smartphone and laptop?
Yes, Internet+ will make that happen! The 100 years old Plain Old Telephone Service
(POTS) can finally be bypassed!
Q Will it be easier to federate so I can communicate with other companies in the
same way?
Federate? No need for that with Internet+ and following standards! Everyone can of
course reach everyone else – using all SIP based applications!
Q And can I be connected to our office PBX? Will that mobility solution with its
server and special arrangement still work?
No such solution is needed with Internet+! Just follow standards – SIP is transported
everywhere. A SIP phone then connects to the SIP PBX from everywhere and with full
functionality. Internet+ automatically gives full mobility using SIP!
© 2012 Intertex Data AB
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Business User-FAQ 6
Q How will SIP Trunking of an IP-PBX be done when having an Internet+ access?
A lot easier! NAT/Firewall traversal, connectivity and security are already resolved. If the
ITSP SIP Trunk follows a standard (e.g. SIP Connect 1.1), a PBX following the same
directly becomes connected. Otherwise, an E-SBC can do the normalization part
between the ITSP Trunk and the PBX – an easier job than today. Probably, such SIP
normalization function will be included in a good TOQrouter. (It is important that such
normalization function - especially if a SIP B2BUA or gateway is used – only is between the ITSP
and the IP-PBX and not interferes with the TOQrouter’s general SIP Proxy interface.)
Q How will connecting to a SIP based cloud service like the MS Office365 Exchange
UM be done having an Internet+ access?
A lot easier! NAT/Firewall traversal connectivity and security is already resolved and
available. An MS issued certificate will be installed in the TOQrouter for trusted
communication with the MS cloud. Any further adaption required towards the local PBX,
will thereafter be the same as today. Such adaption functions may be an option of the
TOQrouter.
© 2012 Intertex Data AB
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Telco-FAQ 1: Services and Billing
Q With Internet+, can we Telcos really charge for calls over an Internet?
Sure you can! If one knows what is going on when calls are done into the “Telco Club”,
you can charge for it. In does not depend on which wires the call is coming from, it
depends on if you have a meter for the usage at the logical entry point to Telco Club
network.
Q Ah… and with a good meter and can we then charge both for outgoing and
incoming calls, knowing the parties?
Yes, you can, but more importantly, you don’t need to keep the phone numbers to
yourself and send calls all around between Telcos just to get your share of the payment.
All can be cleared based on the actual usage measured by the TOQrouter’s meter at the
right point – like an electricity meter in your house.
Q But can I trust the TOQrouter, when it is in the subscriber’s location?
Yes, it very secure and checked. And notice that Telcos deploy millions of CPEs with
RJ11 phone ports, where the CPE usually are trusted with the Telco’s whole PSTN
capacity. Read more about that under Telco-FAQ: “Can We Trust a CPE?”
© 2012 Intertex Data AB
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Telco-FAQ 2: Services and Billing
Q Can a mobile provider also bill for ordinary phone calls over the Internet channel?
Yes, CDR processing and billing can be as before, or done better. The same applies to
the fixed network accesses!
Q And can we have the SMS service on the fixed network also?
Yes, bill as before or in better ways – and finally bring SMS to the fixed network! Users
would certainly like to send SMSs from their PCs!
Wow – SMS in the fixed network! That would really give us Telcos new income…
Q Before having higher IP-quality enabled in our network, can we still bill SMS and
calls that way?
Sure! And for voice and SMS, the QoS-function in the TOQrouter itself is most often
sufficient, on any decent Internet pipe!
© 2012 Intertex Data AB
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Telco-FAQ 3: Services and Billing
Q When introducing a new service – e.g. presence or video calling – how do we
enable that and provision in our network?
You don’t! It is already there! SIP transports ALL real-time services person-to-person
without interfering – You just bill for the new usage - if you wish!
Q Before having higher IP-quality enabled in our network, can we still bill SMS and
calls that way?
Sure! And for voice and SMS, the QoS-function in the TOQrouter itself is most often
sufficient, on the decent Internet pipe!
Q How do we roam?
Technically, it is automatic – one cloud! If Telcos want to bill separately – Clear it via the
CDR-processing as today.
© 2012 Intertex Data AB
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Telco-FAQ 4: Services and Billing
Q And new services; IM, Presence, Video Calling –Telepresence, “Skype”, UC in
general?
They can work as today over the ordinary Internet, or with +quality and in mobile
networks without the battery draining. In today’s islands over the Internet, they will work
as today, but now the Telcos can Bill for (i) for connectivity to the global world, (ii) for
running over the quality pipe and (iii) for access without battery drain.
There can be general charges that allows 3rd party services and usage to appear, and
automatically be charged for transport usage, and there can be specific charges for
identified services.
General (application independent) charges would be:
- Availability time (SIP registered, without battery draining keep-alive packets in mobile), probably
charged flat rate with the subscription
- Per connect (an opening charge like today)
- Per MB usage and time, at available quality levels (in attractive combinations)
A specific charge for e.g. telepresence calling could be:
- For H.264 > 1Mbps usage, 20 h/months included, thereafter XX$ per 100 MB
© 2012 Intertex Data AB
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Telco-FAQ 5: Services and Billing
Q Can we give a user a twin SIM card e.g. for usage in a car mounted handsfree,
something we never have succeeded to make into a useful service of before?
Yes, that is an excellent example how a proper SIP network automatically gives the right
functionality. All users handsets simply use the same SIP address Then the forking
mechanism in SIP makes all handsets ring (and stop at the first pick-up)!
Q Wow! And the mobility solutions with their servers and gateways?
That is also automatic in a proper SIP network - A user can be anywhere! The
TOQrouter provides a general SIP interface available at all delivery points (even on the
LANs). If you have Internet+ access, you are as mobile with SIP access as with Web
access!
© 2012 Intertex Data AB
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Telco-FAQ 6: What’s in it For Us?
Q We Telcos have invested a lot in VoIP with IMS, softswitches and SBCs on top of
our IP networks, but that revenue is not growing. And for the Internet channel we
give vast bandwidth for small flat rate. What can we do to not starve?
The Internet+ model addresses just that: You can increase your earnings, while giving
your subscribers what they need and want. Sell the priority bytes for good usage and
offer users better real-time communication than POTS!
Q And how much will that cost the Telcos this time?
You will directly save on both Capex and Opex! The investment will probably be paid
back by eliminating IMS, Softswitches, SBCs and their associated cost and licenses.
Q And will we need a different infrastructure for fixed and mobile?
No, that is the beauty of IP – A cloud. The infrastructure is the same! You just place the
TOQrouter at different positions. For fixed, you provision the TOQrouter to the customer
LAN – Your demarcation point and handoff of the access and service.
In the mobile network, you place the TOQrouter at the point where the firewall for the
user is today. That is the point where the individual Internet channel to the smartphone
is created.
The infrastructure is the same, simple and straight forward; DNS and ENUM and
Management system using a PKI structure with TOQrouter certificates for Trust and
Security. No Softswitches of central SBCs are needed and you get IP reliability back.
© 2012 Intertex Data AB
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Telco-FAQ 7: What’s in it For Us?
Q I get it! The Telcos’ demarcation point – the place where we hand over our access
and deliver the service. Smart, there the TOQrouter measure the subscriber’s
usage so we can bill!
Yes, and more is important at that specific point: Between the Telcos’ global or public
network and the subscribers private domain, i. e. the user’s LAN or the smartphone.
That is also the point where we can:
• Handle the NAT/firewall traversal so the real-time person-to-person communication reaches the
users. And the TOQrouter can delivers all SIP communication, not just voice.
• Prioritize real-time traffic over data and also make sure such traffic gets the right quality over the
Telco’s global networks.
• When phone numbers are used, check the Telco’s database (ENUM) to find the SIP address to
the called party.
• Route the call to the called party (instead of routing the call to a central softswitch, that routes to
an other carrier’s softswitches – In a SIP network, no “switches” are needed!).
• Route calls for old PSTN phones to the Telco’s PSTN gateways, or to a SIP proxy that selects
the correct PSTN gateway, or into the softswitch you may already have.
Q Will the TOQrouter deliver ordinary data Internet access also?
Sure, that is the best way to use the TOQrouter – To provide a full Internet+ access for
both data and real-time communication.
© 2012 Intertex Data AB
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Telco-FAQ 8: What’s in it For Us?
Q And incoming calls? DNS points out my softswitch as the registrar that knows the
IP address to the users.
The SIP registrar can be anywhere in a SIP network! The TOQrouter includes a SIP
registrar which you can point DNS to for each subscriber. Or you can use any registrar:
in your existing softswitch, or in the user’s IP-PBX. Best is to use in the registrar in the
TOQrouter that can fork calls to all devices that the user has registered. The TOQrouter
can also forward calls, provide voice mail and do many things you find in a softswitch or
a PBX.
Q Ah… and can we then even give our customers usable SIP addresses (like email
addresses), in addition to the E.164 phone number?
Yes, exactly!
Q For what do I need my central softswitches, SBCs or IMS then?
Nothing! They were placed there to replicate the PSTN structure where you had a
separate network and sent calls between operators to able to bill. Such networks
actually destroy the whole Internet idea of having a common network where you address
each data packet directly to its destination.
© 2012 Intertex Data AB
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Telco-FAQ 9: What’s in it For Us?
Q Can we then save the failover system we planned to purchase to get our central
systems reliable? We were also just specifying that the customer boxes, the CPEs
or IADs shall monitor our softswitches so failover is not even noticed.
Without massive central elements, there is nothing to failover. You get the good
reliability of IP itself! You have seen that it is the Internet that works after disasters and
catastrophes.
Q You mentioned video and UC? When will that come with Internet+?
It is there from the beginning! We simply do not destroy those possibilities, like
application specific networks (IMS, softswitches etc.) do.
With Internet+, we deliver real SIP between the users and between servers and their
users. That is very important! Had we not delivered HTTP undistorted between the
browser and the web server, we would not have had the Web! Today’s SIP delivery is
like if the HTTP was limited by the network to only deliver the old videotex service.
The TOQrouter is a standard compliant SIP proxy, that transports all SIP (both signaling
and media) all the way to the users in their private domain. Then, we can connect all UC
or real-time communication, including video, IM and presence, globally between all
devices that use SIP. We have one network between everyone for all types of all realtime communication person-to-person. (B2BUAs and Gateway break such delivery –
only standard compliant SIP proxies must handle the SIP signaling between endpoints.)
© 2012 Intertex Data AB
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Telco-FAQ 10: What’s in it For Us?
Q Will we then have to roll out more bandwidth, new fiber and faster routers?
No, that it the beauty of your IP network. Just turn on diffserv in the routers, and the
important real-time traffic can get priority, while other traffic comes a moment later.
Q But we cannot use the Internet, which is always full with data and file transfer, can
we?
Yes you can! That is actually the best, since you have most bandwidth for the Internet.
Real-time prioritized and charged traffic will only take a fraction of the available
bandwidth. You get paid for the already available bandwidth, just because it is
prioritized!
Q Do you mean we can sell available bandwidth, without new cost? 
Yes, you can! New earnings!
Another benefit of using an extended Internet is the interoperability with the world of
internet connected devices! With the Internet+ model, we get the same global SIP
interface everywhere – allowing all SIP applications! Having Internet devices gatewayed
into a new network, would give limited functionality and an application dependant
network again.
© 2012 Intertex Data AB
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Telco-FAQ 11: What’s in it For Us?
Q And the old voice calls (my current revenue), how does the TOQrouters get the
calls to PSTN connected phones?
The TOQrouter simply routes PSTN calls to the Telco’s PSTN gateways, or to a Telco
SIP proxy that selects the best PSTN gateway, or into a softswitch that a Telco may
already have.
Q Our user’s often asks for sending SMSs (texting) directly from their PCs or from a
fixed phone, instead of having to use their mobile phones. We had such gateways,
but had to close them because we lost revenue. Can we introduce such “old”
service in the fixed network and charge the users the same as when using their
mobile phones?
Yes, SMS is trivial to implement over IP – Just reopen your SMS gateways again! The
TOQrouter will report the SMS usage in CDRs just like any other SIP based traffic and
you can charge as for a mobile phone.
Q Is there a better way for mobility solutions also? That is very complicated and
costly in both our PSTN and our VoIP network.
That is automatic in a proper SIP network as the Internet+! You can use the Web via
HTTP everywhere, can’t you? With real SIP delivery, you can simply use your SIP
devices everywhere, even those connected to company PBXs. SIP Services can also be
moved around and located anywhere.
© 2012 Intertex Data AB
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Telco-FAQ 12: Can We Trust a CPE?
Q Did you say the TOQrouter is located at the subscriber’s location?
In the fixed network it is. The Telco delivers the access and service to the private LAN
where the users are. (Before the TOQrouter, that was a huge issue for any VoIP service
and required an E-SBCs or some workaround method. Volume VoIP deployments have
therefore ended up on RJ11 ports at IAD/CPEs, not being able to deliver anything more
than the old POTS service.) With the TOQrouters, the LAN users get SIP connected.
In the mobile networks, the TOQrouter is located in the Telco’s premise, where the Telco
today has the firewall for the Internet channel to the smartphones.
These are the important locations where the TOQrouter can perform the required
functions. Actually, most of these functions can only be successfully performed between
the service providers domain and the subscribers domain – at that demarcation point.
Q So we Telcos can save having a specific network and don’t even have to roll out
costly MPLS lines to enterprise customers?
Yes! Putting required functions at the wrong location in the network, only complicates
things and destroys the idea and benefits of a cloud! That is one reason why current
VoIP networks don’t do more than POTS and are costly.
With the Internet+ model, you don’t have to pull customer’s LAN into the center, AND do
required functions in massive (single point of failure) and inflexible network elements.
And the TOQrouter CAN includes all the E-SBC functions to do e.g. SIP trunking.
© 2012 Intertex Data AB
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Telco-FAQ 13: Can We Trust a CPE?
Q But can I trust a subscriber located device, like the TOQrouter in the fixed network
case? I know the electricity meter is at my house, but with Internet+ the
TOQrouter does even more things at the edge.
Yes, the Telco is in full control of the TOQrouter!
The TOQrouter is trusted to communicate with the SIP network by using Mutual TLS
signaling while the service provider supplies certificates signed by a common root CA for
all telephony service providers. The TOQrouter also authenticates users, or simply
allows anyone on the private domain to use the SIP services.
The same certificate and PKI can also be used for:
• Connection of the TOQrouter to its management system (e.g. the now widely used, secure and
scalable TR-069).
• Checking presence of the TOQrouter, its identity and the metering function. This is preferably
checked and authenticated via the management system.
• Delivery of the CDRs for billing. They can very efficiently be sent to the TR-069 management
server and end up in an SQL database for further processing. On a private network, e.g. in the
mobile operator case, simple Radius deliver can be used.
• Only allowing Telco controlled access to a the data base for E.164 numbers to SIP addresses.
TR-069 is fully secure by using SOAP over HTTPS to transport its data. The CPE is
always the HTTPS client, so TR-069 management can be as scalable as Google search
engine reacting immediately on each key strokes from the world’s users.
© 2012 Intertex Data AB
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Telco-FAQ 14: Can We Trust a CPE?
Q That sounds even better than Telcos current volume VoIP accesses, where we use
CPEs with RJ11 telephone ports and provision the password to the CPE where no
one can access it, doesn’t it? That is secure and working well for the Telcos.
Yes, it does! There are some 100 million such CPEs or IADs deployed yearly. Nowadays
they are most often provisioned and managed using the TR-069 protocol.
Actually, service providers usually trust those CPEs with their whole VoIP capacity, since
the only limitation in how many simultaneous calls you can place over such access, only
is in the CPE.
With the Internet+, we both use the password and the certificate. The certificate is
issued (signed) by the service provider and can be revoked in case of misuse.
All Telco certificates have a common root CA, so all TOQrouters can trust all other
TOQrouters when communicating over the common IP network. That is how the
Internet/´cloud idea and benefits can be used in a secure and controlled environment.
The signaling is always secure, using mutual TLS on the global (or public) side. Such
security and control is not used in today’s VoIP networks, since the massive central
equipment don’t have capacity for it. With the TOQrouter, enterprise subscribers can
even select to have all their media encrypted.
© 2012 Intertex Data AB
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Telco-FAQ 15: More on Security
Q Isn’t it more secure to use a private IP transport network than an extended
Internet, as suggested in the Internet+ model?
You can also use such an alternative within the Internet+ model. The TOQrouter can still
present the services to the LAN for the users. But notice that a global network, is the
same as a public network whatever you call it. Security is created on other levels – not
by wiring anymore!
Here, for example, everyone is using the public Internet for all banking – Fully secured.
Q Cannot traffic be intercepted and listened to over the public Internet?
Not easily, it is about the same as over all public (global) networks. Internet+ signaling
between Telco’s SIP Proxies in the TOQrouters is encrypted through the use of TLS.
The media can be encrypted by the endpoints using SRTP or SRTP can be added by an
enterprise TOQrouter.
Q Can the requirements of legal intercept be fulfilled?
Yes, the trusted TOQrouter is a SIP proxy and sees the signaling and the key for the
media encryption. The TOQrouter can then do legal intercept by mirroring the media.
© 2012 Intertex Data AB
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Telco-FAQ 16: More on Security
Q Can the requirements of emergency calling also be fulfilled?
Yes, a proper SIP network makes fulfilling the new requirements listed in RFC 6443
straight forward to fulfill!
Q Isn’t it better to have a separate quality network?
No! Having Internet+ as a an extension to the Internet gives important benefits:
1) We need to interoperate with the world of Internet connected devices! In the Internet+
model, we get the same SIP interface everywhere – allowing all SIP applications! Having
Internet gatewayed into a new network, would give limited functionality and an
application dependant network again. (We must assure that SIP goes between the
endpoints without interference, so it becomes as successful as HTTP has been for the
Web.)
2) We already have the best bandwidth and robustness for the Internet. Here we simply
introduce a better way to share that bandwidth. Enabling diffserv will simple prioritize a
portion of the available bandwidth for real-time applications, giving that portion better
value.
© 2012 Intertex Data AB
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Telco-FAQ 17: More on Security
Q If communication is over the Internet, how do we stop someone from stealing
Telco service?
The Telco deploys, controls and manages the TOQrouter at the physical delivery point of the
subscriber. It is the demarcation point.
The TOQrouter, its integrity and function are verified and authenticated using a Telco signed
certificate (using a common root CA for all Telcos) and using mutual TLS signaling between the
TOQrouters for the SIP communication.
This replaces the old way of rolling out a specific wire (physical or e.g. “MPLS”) for a specific
service and gives a better trust in the delivery.
A PKI structure verifies the certificate and allows revocation for stolen or misbehaving TOQrouters.
The TOQrouter authenticate users and include such information in the SIP communication (RFC
3325). One policy may be that all users on a private LAN are considered authenticated by just being
on the LAN, while remote users are SIP digest authenticated.
The TOQrouter measures the usage, just like an electricity meter. It does not in itself stop usage, but
informs who is using. (The management system may turn off access in case of any problem.)
On top of this, the user or a PBX may have its own password to a specific Telco or 3rd party service,
for SIP authentication fir that service, just as usual.
In a mobile network, this trust stretches to the TOQrouter (in place of today’s firewall) “behind the
mast” that creates the private IP domain to the user. Thereafter, the ordinary SIM card in the handset
assures that an allowed user is accessing.
© 2012 Intertex Data AB
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Telco-FAQ 18: General
Q Will a global telepresence service (like the OVCC) fit the Internet+ Model?
Yes, the Internet+ model was actually developed for that type of service, meeting such
business, quality and security requirements.
It surpasses all requirements, allows a soon launch, and presents much more flexible
billing methods.
Q Does Internet+ access need to be introduced all at once, both the new capabilities
and to all users?
No, not at all. One can start with subscriber by subscriber and with ordinary Internet
accesses. Those subscribers get global UC connectivity and POTS connectivity directly.
Thereafter, usage based billing can be introduced and later the access to higher quality
pipes can come.
For Telcos with triple play networks it is even more easy. They can directly offer
Internet+ connectivity between all their triple play subscribers.
Q Can Telcos field test within a smaller group?
Yes!
Q Can we set up a test network today already?
Yes! Contact Intertex or Ingate!
© 2012 Intertex Data AB
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More on the Internet+
Friday 3rd, 9:00 am :
BoF, Room A208
Birds-of-a-Feather , Session
Intertex Data AB
Ingate Systems Inc.
www.intertex.se
[email protected]
Rissneleden 45
SE-174 44 Sundbyberg
Sweden
sip:[email protected]
Tel: +46 8 6282828
www.ingate.com
[email protected]
7 Farley Road
Hollis, NH 03049
United States
Ph: +1 (603) 883-6569
Tel Sw: +46 8 6007750
© 2012 Intertex Data AB
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