The document discusses TalkTalk's SIP Trunk service for large enterprises as an alternative to ISDN30. It provides an overview of the typical deployment architecture using session border controllers and describes how SIP Trunks fit into the converged connectivity model. The key benefits highlighted are end-to-end management by a single supplier, reliability due to deployment on TalkTalk's fiber network, flexibility, and cost efficiency compared to using multiple vendors.

1. Voice over Ethernet
SIP Trunk service for large enterprises
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2. Objectives
• Appreciate where SIP Trunks fit in
• Understand a typical deployment architecture
• Work out when SIP Trunks are ideal
• Establish some great questions to ask vendors
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3. A little more about our Group
• UK’s leading provider of B2C and B2B
data networking and telephony services
4.25M broadband base (‘10: 4M)
• £500M+ investment in UK’s largest Next Generation Network
2003 unbundled exchanges (89%coverage)
Three times more than BT, twice as many as C&W
• UK’s largest Ethernet network
1000+ exchange PoPs - deployed in only 5 months - expanding to 1400
• More VoIP traffic than any other UK network
Over 250Gbits/second, 2 Billion total VOIP minutes
• Successful, profitable and growing
£1.7Bn revenue - up 21.7%, £230M EBITDA
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4. DWDM Nodes
Core Network
TalkTalk Group network
1.6Tb UK’s deepest built multi-service NGN
800Gb
10Gb
Unbundled Exchanges 2003 enabled MPF & SMPF exchanges
Collector Nodes • Planned growth to 2700 (significantly more than
any other)
Supported by 2 x 800 Gigabit UK core
network - 1.6TB around London
Giving Gigabit access to 1800+
exchanges
Enabling 1800 Ethernet exchanges since
Jan 2010
(Significantly more than any other)
Conveys 200 Gbits/second data
More VoIP traffic than any other UK network
• 11 Gbits/second
• 2 Billion total VoIP minutes
(data accurate November 2010)
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5. Our network is our advantage
• More unbundled exchanges
than any other network
• Unique in having both
SMPF (broadband-only) &
MPF (line & broadband)
infrastructure
• Coverage
• Capacity/speed
(data as reported on www.samknows.co.uk Dec 2010 plus TTG own data)
3/17/2011
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CONFIDENTIAL 5

6. Technology Model Shift
Pre 2010 Post 2010
Individual delivery Converged connectivity
of individual services integrated applications
• Mature technologies • Application proliferation
• Multiple suppliers • Service Convergence
• Little differentiation • Underpinned by connectivity
• Price sensitive
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7. Voice over Ethernet
TalkTalk Business SIP Trunk service
• Business grade alternative to ISDN30
• Fully managed service from single supplier
• Cost effective for businesses with more than
120 voice channels
• Number and capacity flexibility
• Ideal solution for businesses with a high call
volumes
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8. What is a SIP Trunk?
SIP Trunk?
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9. SIP Trunk Service Architecture
Session Border Controller
TalkTalk Business
SIP Trunks
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10. Why an SBC - what does it do?
• On-site monitoring and demarcation point
• Allows us to get MI on every call’s quality
• Provides a firewall between the network and LAN
• Enables legal intercept compliance
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11. Specification
Suitable for 120 - 750 voice channels per
connection
• Outbound calls with choice of presentation
number
• 99.99% service availability on our resilient
solution
• Voice quality to match ISDN30
• Target fix times backed by service credits
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12. Benefits
End-to-end management
• Project management from start to finish
• Specialist design team ensures the capacity and resiliency you
need
• We provide the full solution, only one supplier to call with all
queries
Monitored 24/7
• In the unlikely event of a fault we provide a one hour response
and a target fix time of 5 hours
Cost-efficient
• Directly connected to our network so there are no third party
costs
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13. Benefits continued…
Reliability and quality
• Voice over Ethernet is a fibre-based solution, which provides
significantly more reliability
• Provides 99.99% availability with our resilient service
It’s flexible
• Use a number of your choice for making outbound calls – the
presentation number
• Also has the ability to terminate multiple geographic numbers
at one location
One trusted supplier
• We deliver the complete end-to-end service, so we always take
full responsibility
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14. TalkTalk Business SIP Trunk service
Issue SIP 1.0 Issues TalkTalk Business Solution
Reliability Tier 2/3 operators – Tier 1
Single points of failure Resilient & Mature Sonus NGN
Price Single solution with multiple One supplier
suppliers
Customer Tier 2/3 operators not 24 x 7 Tier 1 operator – 24 x 7
Services Multi supplier ‐ finger pointing One supplier
Slow to fix Strong SLA
Availability Poor UK IP coverage 1800+ Ethernet Exchanges
Interoperability Multiple SIP Flavours Official vendor accreditation
Voice Quality Unmanaged service Managed Customer SBC
MoS
ADSL focus Ethernet delivery
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15. SIP Trunk selection considerations
• Do I need more than 120 voice channels?
• Will I get a managed service and SLA with
teeth?
• What if I want to keep my numbers?
• Is it connected to a great IP based NGN?
• Has the protocol been tested for
interoperability?
• Can the carrier demonstrate cost savings?
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16. Objectives
 Appreciate where SIP Trunks fit in
 Understand a typical deployment architecture
 Work out when SIP Trunks are ideal
 Establish some great questions to ask vendors
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17. Questions?
www.talktalkbusiness.co.uk
mmatthews@talktalkbusiness.co.uk
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