Transcript Slide 1

Technical Strategy:
Secure SIP Trunking in
Legacy PSTN/PBX
Environments
Rich Poole
Dialogic
[email protected]
Scott Beer
Ingate
[email protected]
September 2, 2009
The SIP Trunking Enabler
Agenda
 How Are Gateways Used Today?
 What Does A Gateway Do?
 SIP Trunking Deployment – Issues & Options
 Gateway Installation & Configuration
Slide 2
© Copyright 2009 Dialogic Corporation. All rights reserved.
How Are Gateways Used Today?
Select Use Case Examples
 Distributed IP Voice Messaging
 Distributed IP Contact Center
 Unified Communications:


–
–
–
–
Microsoft Office Communications Server 2007
IBM Lotus Sametime Unified Telephony
Motorola Total Enterprise Access & Mobility
Asterisk Business Edition
Fax over IP
SIP Trunking
Slide 3
© Copyright 2009 Dialogic Corporation. All rights reserved.
How are Gateways Used in the Enterprise?
IP Voice Messaging Use Case*
Centralized
Messaging / IVR
Digital
Station
Phones
Brussels
LAN
T1 Media
Gateway
Digital Station Emulation
Media Gateway
Nortel
Meridian
Munich
WAN
Avaya
G3 PBX
E1 Media Gateway
Legacy
Phones
PSTN
Legacy
Phones
Analog
Media Gateway
Stockholm
Headquarters
Siemens
Hicom
Ericsson
MD110
Legacy
Phones
Remote Offices
* - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 4
How are Gateways Used in the Enterprise?
Distributed IP Contact Center Use Case*
Media Gateway
* - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 5
How are Gateways Used in the Enterprise?
Microsoft® Office Communications Server 2007 Use Case*
MS UC Mediation Server
Basic Media Gateway
legacy
PBX
OCS Server(s)
“Tanjay” phones
PSTN
Active directory
Basic Hybrid Media Gateway
Microsoft® Office Communicator 2007
* - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 6
How are Gateways Used in the Enterprise?
IBM® Lotus® Sametime® Unified Telephony Use Case*
T1/E1
T1/E1
* Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide.
Slide 7
© Copyright 2009 Dialogic Corporation. All rights reserved.
How are Gateways Used in the Enterprise?
Motorola TEAM (Total Enterprise Access & Mobility) Use Case*
“The TEAM
VoWLAN
solution turns
the desktop
into a
pocketable
virtual office.”
www.motorola.com
Slide 8
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
How are Gateways Used in the Enterprise?
Media Gateway + Asterisk Business Edition Use Case*
Asterisk Business Edition
Media
Gateway
Media Gateways Enable Applications Built on Asterisk Business Edition
Allows Asterisk Developers to Augment Existing PBX Functionality
* - Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
Slide 9
© Copyright 2009 Dialogic Corporation. All rights reserved.
How are Gateways Used in the Enterprise?
FoIP Server Solution Use Case*
– Enables FoIP Server in TDM and Hybrid PBX Environment
– Enables Fax Server to be Deployed as a Virtual Server
– Enables Centralized Fax Servers for Multi-Site Organizations
T.30 Fax
T.38 FoIP
Media Gateway
PSTN
FoIP software-based
Fax Server
PBX
Media Gateway
WAN
Remote Site
PBX
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 10
How are Gateways Used in the Enterprise?
SIP Trunking for Legacy PBX and Contact Centers
IP Telephony
Service Provider
IP Network
SIP
Trunking
Service
Firewall
Broadband
Internet
Access
PSTN
Service Provider
Gateway
Border
Element
Circuit Switched
Voice Access
(Optional)
Circuit Switched
Voice Access
Corporate Voice and Data LAN
Legacy
PBX with
system
phones
VoIP
Gateway
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 11
What does a Gateway Do?
Slide 12
© Copyright 2009 Dialogic Corporation. All rights reserved.
What does the Gateway do? -Inputs/Outputs
IP Telephony
Service Provider
IP Network
PSTN
TDM Interface
Transport: T1 or DS3
SIP
Trunking
Service
Firewall
Broadband
Internet
Access
[Dig. Station Emulation, Analog]
Service Provider
Signaling:
Circuit Switched
GatewayISDN PRI, QSIG
Voice Access
[CAS, Serial (SMDI, MCI, MD-110)]
Voice:
Border
Element
(Optional)
PCM
Circuit Switched
Voice Access
Corporate Voice and Data LAN
VoIP
Gateway
IP Interface:
Transport: IP
Signaling: SIP over UDP, TCP (or TLS)
Voice:
G.7xx over RTP/RTCP (or sRTP)
QoS:
DiffServ
Legacy
PBX with
system
phones
Management Interface:
Config:
HTTP (or HTTPs) Web GUI
[Telnet, Serial, RS-232]
Event Mgt.:
SW Mgt.:
SNMP, SMTP
BootP, TFTP
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 13
What does the Gateway do? -Internal Bearer
Bearer Processing:
IP Telephony
Voice:
- G.711, G.729AB, G.723.1, etc.
Service Provider
- G.168 Echo Cancellation
- VAD, SS, CNG
IP Network
PSTN
- [other codecs]
Tones:
- DTMF Digit Relay (RFC2833 or SIP Info)
- Call Progress Detection (PVD, PAMD, DTMF, Fax
Service Provider
Tone, Progress Tone, …)
Circuit Switched
Gateway
Broadband
SIP
Fax:
T.38
Fax
over
IP,
G.711
Fax
Bypass
(T.30/G.711)
Voice Access
Internet
Trunking
Service
(Optional)
Access
Border
Element
Firewall
Circuit Switched
Voice Access
Corporate Voice and Data LAN
VoIP
Gateway
Transport Mediation:
Transport: TDM-to-SIP
TDM-to-TDM
SIP-to-SIP
Legacy
PBX with
system
phones
Additional Controls:
- Gain Control for IP-TDM & TDM-IP
- Echo Cancellation Parameter
- Voice Activity Filters
- Call Progress Filters
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 14
What does the Gateway do? -Internal Processing
Supplementary Services:
- Hold/UnHold
- Call Transfer
- Blind Transfer
PSTN
- Supervised Transfer
- Message Waiting Indicator (MWI)
- ANI / DNIS / Call Diversion Info
Service Provider
- CPID
IP Telephony
Service Provider
IP Network
SIP
Trunking
Service
Broadband
Internet
Access
Gateway
Border
Element
Firewall
Circuit Switched
Voice Access
(Optional)
Circuit Switched
Voice Access
Corporate Voice and Data LAN
Call Routing:
- Digit Manipulation
- Call Routing Engine
- Alternate Routing for TDM & IP
- Trunk Group Management
- IP Route Management
VoIP
Gateway
Legacy
PBX with
system
phones
Call Processing:
- Call Setup/Teardown
- Codec Negotiation
- Fax Negotiation
- DTMF Digit Relay
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 15
SIP Trunking
Deployment Issues &
Options
Slide 16
© Copyright 2009 Dialogic Corporation. All rights reserved.
How are Gateways Deployed for SIP Trunking?
 Issues:
– Do I need to move all communciations to SIP?
– How do I handle multiple offices & optimize deployments?
– Bandwidth Requirements
• How much is used already for data
• Need to prioritize voice (more real-time)
– Gateway & PBX Interop
– Availability Considerations
• Multiple Gateways
• Alternate Routing
• Failover upon power failure
– How do you handle Fax?
Slide 17
© Copyright 2009 Dialogic Corporation. All rights reserved.
Evolution of IP Fax (FoIP)
 T.37
– Store and forward
– Scan image, attach to email, and send
– Not real time – no receipt confirmation
 G.711 Pass Through
– Encode fax audio for IP transport
– Heavy bandwidth requirements
– Susceptible to latency – high failure rate
 T.38 FoIP
– Created by the ITU to resolve the above issues
Slide 18
© Copyright 2009 Dialogic Corporation. All rights reserved.
T.38 – Reliable IP Fax:
 Standard for real time IP Fax defined by ITU
 Widely adopted by router manufacturers
 Resolves latency issue that plagues G.711
 Uses much less bandwidth
– ~ 35% of the bandwidth required by G.711
 Preserves user experience
– Positive receipt confirmation
 Compliant to industry standards
– Not T.37 store and forward as an email attachment
 Dialogic was a primary contributor to the T.38 spec
Slide 19
© Copyright 2009 Dialogic Corporation. All rights reserved.
Legacy Configuration Use Case*
IP Network
PSTN
Circuit
Switched
Trunking
Broadband
Internet
Access
Firewall
Legacy
PBX
Corporate LAN
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 20
SIP Trunking for Legacy PBX and Contact Centers
Phased SIP Trunking – Outbound Only Use Case*
IP Telephony
Service Provider
PSTN
IP Network
Outbound
Outbound traffic: Routed through SIP Trunking
Corporate Voice and Data LAN
Inbound traffic: Continues to be routed to PSTN
Fax:
Routed through PSTN PSTN-VoIP
Circuit Switched
Voice Access
Fax
Firewall
Service Provider
Gateway
Inbound
SIP
Trunking
Service
Broadband
Internet
Access
Border
Element
Legacy
PBX
Gateway
• Routing outbound calls to SIP Trunks could lower costs*
• Route outbound traffic to Gateway (except from Fax extensions)
• PSTN connection still available as alternate route for outbound traffic*
* Requires program change to PBX)
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 21
SIP Trunking for Legacy PBX and Contact Centers
Phased SIP Trunking – PSTN Alt Route Use Case*
IP Telephony
Service Provider
PSTN
IP Network
SIP
Trunking
Service
Firewall
Broadband
Internet
Access
Border
Element
Service Provider
Gateway
Outbound
Inbound
Circuit Switched
Voice Access
Legacy
PBX
Corporate Voice and Data LAN
Outbound traffic: Routed to SIP Trunking
Inbound traffic: Routed to SIP Trunking PSTN-VoIP
Gateway
Fax:
Routed through Gateway
to/from PSTN
• No or minimal change to PBX
• Legacy PSTN available as Alternate Route for overflow
traffic or as backup to SIP Trunks (IP or Power Failure)
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 22
SIP Trunking for Legacy PBX and Contact Centers
Full SIP Trunking Solution Use Case*
IP Telephony
Service Provider
PSTN
IP Network
SIP
Trunking
Service
Firewall
Broadband
Internet
Access
Border
Element
Service Provider
Gateway
Outbound
Inbound
Fax
Circuit Switched
Voice Access
Legacy
PBX
Corporate Voice and Data LAN
Outbound traffic: Routed to SIP Trunking
PSTN-VoIP
Inbound traffic: Routed to SIP Trunking
Gateway
Fax:
Routed through Gateway
• No or minimal change to PBX
• Disconnection from legacy PSTN – lower costs
• T.38 is preferred for fax, but G.711 Fax Relay may be acceptable
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 23
SIP Trunking for Legacy PBX and Contact Centers
Remote Office SIP Trunking - Centralized Use Case*
PSTN
IP Telephony
Service Provider
IP Network
Legacy
PBX
Circuit Switched
Voice Access
Remote Office
Corporate Voice & Data LAN
SIP
Trunking
Service
PSTN
Broadband
Internet
Access
Border
Element
Firewall
Corp Intranet
Circuit Switched
Voice Access
Legacy
PBX
Corporate Voice & Data LAN
• Corporate traffic over Intranet – lower costs
• Concentrate PSTN access through SIP Trunks
• Optional Remote PSTN Access through gateway
• Reduced remote legacy PSTN – lower costs
VoIP
Gateway
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 24
SIP Trunking for Legacy PBX and Contact Centers
Remote Office SIP Trunking – Distributed Use Case*
IP Telephony
IP Network Service Provider
PSTN
IP Network
SIP
Trunking
Service
SIP
Trunking
Service
Broadband
Internet
Access
Remote Office
Corporate Voice & Data LAN
Border
Element
Corp Intranet
Circuit Switched
Voice Access
Legacy
PBX
Corporate Voice & Data LAN
VoIP
Gateway
• Corporate data traffic over Intranet
• Leverage ITSP Network with remote SIP Trunks
• Remote PSTN available through gateway, if needed
•- Please refer to ‘USE CASE(S)’ portion of the Legal Notice on the last slide
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 25
Gateway
Installation &
Configuration
Slide 26
© Copyright 2009 Dialogic Corporation. All rights reserved.
Installation Summary
 Connection to PBX
• Connect Gateway to PBX
• Configure PBX to send calls to Gateway
• Configure Gateway to connect to PBX
 Connection to LAN
• Connect Gateway to LAN
• Configure SIP Trunking Provider to connect to Gateway
• Configure Gateway to connect to SIP Trunking Provider
 Test connections to PBX and SIP Trunking Provider
Slide 27
© Copyright 2009 Dialogic Corporation. All rights reserved.
Gateway Configuration
 Simplified Configuration Management & Troubleshooting
Initial
Config
Web GUI
• Use Serial Cable or Telnet to GW; Login; run ‘quickcfg’
• Set IP Address / Subnet for Gateway & Default Network Gateway
• Set T1/E1 & PBX Signaling Type (ISDN / CAS)
• Restart Gateway
• Login to Gateway
• Disable BootP (else GW gets IP Addr from DHCP Server)
TDM
Config
• Set PCM Coding – µLaw (T1) , aLaw (E1)
• Per span, set Line Encoding & Framing (e.g.: B8ZS & ESF)
• Per ISDN span, set to “Network” or “Terminal” (Opposite of endpoint)
• Enable “Failover” if Gateway is between PBX & PSTN
VoIP
Config
• Set IP Transport to UDP, TCP (or TLS)
• Set Audio Compression – G.711-µLaw , G.711-aLaw, …
• Set VAD on/off
• Set RFC3960 Early Media on
Routing
Config
• Set up TDM Trunk Group(s) (e.g. PSTN, PBX, etc.)
• Set up VoIP Host Group(s) (IP Endpoints)
• Config Inbound TDM rules per Trunk Group – Specify Routing & Normalization
• Config Inbound VoIP rules per VoIP Host Group & Number Normalization
Restart
Gateway
• Make Connections
• Use built-in Trace Tools, Wireshark, ... to verify proper operation
• Ready to use
Slide 28
© Copyright 2009 Dialogic Corporation. All rights reserved.
Summary
89% Growth!
+

SIP Trunking demand is accelerating and moving
upstream from SMB to the Enterprise

Ingate SIParator® and Ingate Firewall® products
provide a secure, scalable and interoperable
enterprise edge for SIP Trunking Services

Dialogic provides enterprise class media gateways
to enable SIP trunking for legacy PBX and contact
centers

Ingate and Dialogic provide interoperable products
that enable a rapid return on investment from SIP
Trunking deployments

SIP Trunk adoption moves an enterprise towards
richer multi-media and unified communications
services across public IP networks
Slide 29
© Copyright 2009 Dialogic Corporation. All rights reserved.
Questions?

For more information visit:
– www.dialogic.com/solutions/uc/ingate.htm
– www.dialogic.com/products/gateways/
– www.ingate.com
… or contact us directly
•
•
Rich Poole: [email protected]
Scott Beer: [email protected]
Thanks for attending!
Slide 30
© Copyright 2009 Dialogic Corporation. All rights reserved.
Dialogic, Dialogic Pro, Brooktrout, Diva, Cantata, SnowShore, Eicon, Eicon Networks, NMS Communications, NMS (stylized), Eiconcard, SIPcontrol, Diva ISDN,
TruFax, Exnet, EXS, SwitchKit, N20, Making Innovation Thrive, Connecting to Growth, Video is the New Voice, Fusion, Vision, PacketMedia, NaturalAccess,
NaturalCallControl, NaturalConference, NaturalFax and Shiva, among others as well as related logos, are either registered trademarks or trademarks of Dialogic
Corporation or its subsidiaries (“Dialogic”). Ingate, Ingate Firewall, and Ingate SIParator are registered trademarks of Ingate Systems AB. Other names of actual
companies and products mentioned herein are the trademarks of their respective owners. Dialogic encourages all users of its products to procure all necessary
intellectual property licenses required to implement their concepts or applications, which licenses may vary from country to country. Dialogic may make changes to
specifications, product descriptions, and plans at any time, without notice.
USE CASE(S)
Any use case(s) shown and/or described herein represent one or more examples of the various ways, scenarios or environments in which Dialogic products can be
used. Such use case(s) are non-limiting and do not represent recommendations of Dialogic as to whether or how to use Dialogic products.
06/09
www.dialogic.com
© Copyright 2009 Dialogic Corporation. All rights reserved.
Slide 31