Transcript Comments as a Manufacturing Member

TINA Conference
2000
Bob Martin
Chief Technical Officer
[email protected]
Comments as a
Manufacturer
Member
TINA-C style architectures are emerging in
many places in the next generation network
“Open”
“Closed”
Internet
“Open”
User Services
Intelligent Network
Service Provider
Services
Service Control
Wireless
“Closed”
PSTN
PSTN
Network Dependent Services
Wireless
Intelligent Network
Hosted Services on
Open Networks
Internet
Softswitch follows a TINA-C style
architecture
Softswitch Model
 There is a disaggregation of
services, switching,
transport, and access
Billing
System
Management
System
 Services interwork across
multiple network types
New
Services
Signaling
 Open and flexible interfaces
- API’s & protocols, allow
ISVs to create new services
control
control
 Standard API’s
PSTN
IP
ATM
Media Gateway
IP
Packet Data
Backbone ATM
PSTN
Media Gateway
3G-wireless networks are following the TINA-C style
architecture
Softswitch-based
Soft Mobile
Switching
Center
PSTN
Radio Network
Control
Common
Base Stations
Media
Gateways
Internet
Service optical networks are following TINA-C
style architectures - though with very different
API’s and “call models”
New Style Optical Services
Optical Network Topology View
SoftWave
•Bandwidth Trading
•Optical VPN’s
•Selectable QoS
Customer Programmability
Open network case study - what happened with
AIN services?
SCP ONLY
SCP + Adjunct
Advanced Toll-Free
Area Number Calling
Authentication Center
E911
Internet Call Diversion
LIDB services
Local Toll Free (800 portability)
Network ACD/Contact Center
Number Portability
Over-the-Air Service Provisioning
PrePaid Service
Standalone Home Location Register
Televoting
Calling Party Pays
Location Based Services
Flexible Alerting/simultaneous ringing
Virtual Private Network
Calling Card
Calling Name display
Automatic Callback
IN Unified Messaging
Network Announcements
Incoming Call Screenin
Short Message Service Center
Voice Activated Dialing
Personal/Single Number Servic
E-mail reader
Instant Messaging (e.g. "Teen talk")
Internet Call Waiting/Management
Personal Assistants
Talking Call Waiting
Outgoing Call Screening/
Calling Party Verification
Vendor
ISV, Telco, & Vendor
There was not an explosion in network
services with AIN - Why Not?
 Limited Functionality End User Device?
 Operations & Tariffing Complexities?
 Disparate, Partially Deployed Switch Triggers?
 Voice Services Running Dry?
 Feature Interaction?
Feature interaction is a complex network services
attribute that can prohibit an open programming
environment for network services
 When the subscriber is busy, an incoming call triggers a
cw tone at the subscriber and a normal dial tone at the
caller. The cw tone can be repeated at most once. After
a 10 sec interval (9..30sec)…… (Telcordia LSSGR)
 Feature interaction occurs when a feature’s behavior
changes - intentionally or unintentionally - in the
presence of another feature
– Circular Call Forwarding
– Unlisted Number, Caller ID, E911 & “Hang up”
– Call gapping & emergency calls
– Internet Call Waiting & Call Forwarding On No Answer
– Denial of service, distributed attack?
– Emergency virus shield download?
New tool for Automatic Verification of new
services ensures correctness & noninterference, and speeds time to market
New tools and faster processors
reduce verification time by 10,000
Extract
model from
source code
Convert
formulae
to test
automata
Properties
Source Code
Abstractions
Generate
error
traces in
source
language
Time needed
to solve problem on
contemporary machines
100000
Seconds
10000
1000
100
10
1
1980
1987
1995
2000
Compile
executable
model check
-- one per
property
Schedule
and
execute checks
Web-based travel service is a simple
application that ..
is not as simple as it looks
Call Center
DB
Distributed
Network
Controller
SCP
GK
SS7
e- Tailer
Class 4
Switch
IMT
e-Shopper
IP
ATM
IP
ATM
Java
Applet
Video
Web Server
IP
Access
Web Server
Trunking
Gateway
Access
Gateway
RAS
Web/Push Server
ACD
CTI
Server
IP
ATM
LAN
Several major challenges remain To
achieve TINA-C objectives
 Feature Interaction (and the degree of access to core
network)
 Next Generation Networks “Stitching” Integration
– PINT
– SIP
 Widely-Supported Standard “Service” API’s For
Application Domains
– Progress with JAIN, Parlay, OSA
– Business integration with the WEB world is needed
 Open Telecommunications & Information Software
Component Marketplace in Network Management
– Group of Seven
– ITU
Final