This document discusses SIP (Session Initiation Protocol) and its advantages over traditional TDM services. It summarizes that SIP reduces communication costs, improves security through private networks, and ensures reliability with features like auto failover. The market is evolving rapidly towards SIP, with 42% of worldwide companies expected to use it for all calls by 2018. SIP services are easier for businesses to implement and use than TDM, delivering flexibility and cost savings.

1. THERE’S MORE TO SIP THAN
YOU THINK
JON NOWELL
HEAD OF VOICE SERVICES
JON.NOWELL@TALKTALKBUSINESS.CO.UK
THE RISE OF BUSINESS GRADE BRITAIN

2. SIP DEFINITIONS
SIP (SESSION INITIATION PROTOCOL)
The primary VoIP protocol that enables a session or
connection to be made between two end points on a network
SIP TRUNKING
A service delivering multiple SIP Channels to a PBX
SIP SUBSCRIBER (HOSTED TELEPHONY)
A service delivering calls directly to the end user.
Either as a SIP App on mobile phone/iPad or via a SIP enabled desk phone.

3. STRAW POLL
How many of you use VOIP
on the LAN for your Telephony?

4. STRAW POLL
How many of you then convert
this to TDM via ISDN30’s for onward
call delivery?

5. A recent survey said…
• 50% of Corporate IT decision makers
had adopted VOIP on the LAN
• 55% of the adopters were converting
this to TDM

6. The Market Evolution
Eastern Management Group
SIP Study
By 2018 42% of Worldwide companies
will be using SIP for 100% of Calls
Source: Illume Consulting
•
•
•
•
•
SIP Market is growing by 17% PA
0.9M SIP Trunks
ISDN Market is shrinking by 8% PA
UK B2B voice market is 9% SIP vs 38% in US.
Key Drivers : Cost Savings | Numbering Flexibility | Business Continuity

7. Polarization of Adoption
Market Evolution
TDM Services
SIP Services
0.3M Channels
Enterprise
Corporate
2.4M
Channels
ISDN30
SME
0.9M Channels
ISDN2
SOHO
5.4M
Channels PSTN
0.6M Channels
Micro SME

8. THE SEVEN BARRIERS TO SIP
•
•
•
•
•
•
•
Cost
Security
Network Bandwidth
Product availability
Service Level Agreement
PBX Support
Implementation pain

9. COST
SIP
£8 £9.45
Per Ch /
Mth
ISDN30
£14 -£21
per Ch /Mth

10. SECURITY
Eastern Management Group
SIP Study
By 2018 42% of Worldwide companies
will be using SIP for 100% of Calls
Multilayer Secure Private Network

11. AVAILABLE BANDWIDTH
NEXT-GEN NETWORK
3,000 Unbundled exchanges
2,000+ Ethernet PoPs
1,400 Fibre exchanges

12. VOICE CAPABILITY
• The TalkTalk Network switches
5M minutes of calls an hour
- 3B minutes per month.
• The TT network uses SIP to deliver
service to over 4M customers
• We have capacity for 1M SIP
Channels today.
• We will increase our network
capacity by between 50-100 times
over the next 5-10 years.

13. Product availability
SIP Services
TDM Services
Enterprise
SME
0.9M Channels
ISDN2
Micro SME
SOHO
5.4M
Channels
PSTN
Voice Over Ethernet
SIP - Solutions
Corporate
2.4M
Channels
ISDN30
IP-ISDN30
Hosted Unified
Communications

14. SERVICE LEVEL AGREEMENT
Single Provider
Single SLA
Design principle
Proactive assurance

15. PBX SUPPORT

16. IMPLEMENTATION PAIN

17. MONEY IN THE BANK
2,700 ISDN30 channels over 90 bearers.
Migrated to to 2,900 channels with auto failover.
SAVED
46%
ON LINE RENTAL

18. AT THE RACES
Customer demand doubled calls on Grand
National day - exceeding 10,000 calls in one
15-minute period. Capacity planning & Call
Admission Control ensured no calls
abandoned
SAVED
ON LINE RENTAL
GAME
CHANGER
FOR BUSINESS
PERFORMANCE

19. Summary
SIP – The future of Voice
SIP - reduces costs
It just works
Easy to implement
SIP Features deliver
Business agility

20. THANKYOU
JON NOWELL
HEAD OF VOICE SWERVICES
THE RISE OF BUSINESS GRADE BRITAIN