1. Welcome

2. IP Telephony
VOIP

3. What is VOIP 1st Voice App 1995 VocalTec
Voice packets transported over IP network instead of PSTN
Uses call connection standards such as H.323, SIP, MGCP
Uses well known Media standards such as G.711, G.728, GSM, etc
Cisco uses SKINNY, but changes in v5.x
Access to PSTN via gateways
VOIP will become the default, already out sells traditional PBX
Reported to be the Broadband Killer App Parks Associates
UK forms trade body Internet Telephony Service Providers Association ITSPA
We will all be users

4. BT 21CN The BT 21st Century network
Started 2004 –bypass core PSTN service for Cambridge & Woolwich
£10 Billion spend over next 5 years
50% customers moved by 2008
1500 customers to trial fibre to the home
Projected savings of £1 Billion per year by adopting single infrastructure

5. Service Providers Babble BT Call1886 FreeWorldDialup PipeMedia SIPGate
Vonage
Gossiptel
VoipGate
FreeSpeech.co.uk
……………….and many more

6. Phones Softphones Xten Snom KPhone Windows Messenger Ineen SJ-Labs
LinPhone
Gizmo
HardPhones
3COM
DLink
Cisco
Grandstream
Avaya
Siemens
ATA’s
Mobile Phones Motorola & SIPCPE GSM abg
………………………………….plus many many more

7. Current Trial 2Mb/s PCM link to the BTEX PBX
Call Signalling conversion DPNSS to QSIG
Link to Cisco CallManager
CallManager connection to main Call Billing data collection service
Extension numbers 15XX allocated

8. Current Trial

9. Advantages Lower call costs Lower Network Leasing costs
Integrated Voice and Data Applications
Single Communications Management Domain
Moves, Adds, Changes
Flexibility
Hot-desking
Remote Workers
Voic
Text to Speech
MoH

10. Issues Layer 1 needs to meet ‘real-time’ requirements
Loss, Jitter & Delay
QoS present from end-to-end
New management techniques for converged network
Queuing at egress points
Power
Emergency Services
Cost of Handsets
Security

11. Security Eavesdropping Identity Theft DOS SPIT/SPAM VOMIT Phishing
Theft of Service
Manipulation of CDR
Compliance with Law & Policy

12. Security The bottom line VOIP doesn’t make your network less secure
It needs protected like any other network application.

13. So concerns with security for the phone network is something new then?

14. The S word
Skype

15. The problem with Skype P2P technology Proprietary
Can act as an agent even when you not using it
Payload encrypted
A true P2P system, in our opinion, is one where all nodes in a network join together dynamically to participate in traffic routing-, processing- and bandwidth intensive tasks that would otherwise be handled by central servers Skype FAQ
Client License

16. Skype Article 4 Utilization of Your computer
4.1 Utilization of Your computer. You hereby acknowledge that the Skype Software may utilize the processor and bandwidth of the computer (or other applicable device) You are utilizing, for the limited purpose of facilitating the communication between Skype Software users.
4.2 Protection of Your computer (resources). You understand that the Skype Software will use its commercially reasonable efforts to protect the privacy and integrity of the computer resources (or other applicable device) You are utilizing and of Your communication, however, You acknowledge and agree that Skype cannot give any warranties in this respect.

17. Skype Breaks Connection Policy – no P2P apps
Breaks ICT software policy – standards based
Can break JANET AUP
wasting staff effort or network resources
using JANET in a way that denies service to other users
see UKERNA VAG document March 2006

18. Future Some DPNSS signalling issues to solve
Bring SIP Proxy into service
Rollout DNS SRV records
Add DD extensions
Move to CM ver 5
Use phones for real
Develop STUN server
Follow developments for convergence of Voice, Video and IM services

19. In Tomorrows World style The Live Demo

20. Questions Steven Jack Computing Service Multimedia Communications Unit
X3828