What is SIP Trunking?

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What is SIP Trunking?

• Thomas Roel
• Convergence Sales Engineer
• 651.796.7043
• troel_at_nacr.com

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SIP in the Enterprise

• Leading topic of Conversation
  TRUNKING
• Collaboration is a significant conversation piece
• Presence is a new requirement
• BYOD
• Application Distribution and Sequencing
• CEBP event-triggered communications

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ISDN Analog Trunking
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SIP Trunking Justifications

• Service Provider motivations to move to SIP
  trunking
• Dwindling, and the expectation of dwindling, TDM
  revenues
• Offer new services and applications to maintain
  profits
• Incumbents need to keep smaller competitors
  (without TDM capabilities) out of their accounts
• Provide one access method for all voice and data
  services
• Enterprise benefits
• Reduction on enterprise hardware
• Reduction in footprint, power consumption and
  maintenance charges
• Flexibility in provisioning / design / resource
  utilization
• Architecturally ready for future applications
  (federation etc)
• Potential cost savings
• Enhanced survivability

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Why SIP Trunking is good.
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SIP Trunking Example
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FOCUS on SIP Trunking Using SIP trunks to connect
to the service provider network could be a way to
save money and extend IP, but as with any new
carrier service, SIP trunks come with their own
set of challenges. If you want to truly capture
the savings and keep real-time applications
performing as users expect, there are lots of
technical challenges to deal with.
SIP trunks come with their own set of
challenges
http//www.nojitter.com/hotzone/sip_trunking.jhtml
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Challenges

• Vendor/Carrier Experience
• Different geographies and different vendors
  equate to different levels of local expertise
• TRAINING Customers are less and less willing
  take ownership due to unfamiliarity with the
  technology Data-Centric
• Providers SBC push-back or vendor requirement

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SIP Trunking considerations
Network Normalization
Firewall NAT traversal
TCP TLS
NAT breaks SIP
Security QoS
SIP Normalization
Clear-Text VoIP
Open Standards
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Thank you

• Thomas Roel
• Convergence Sales Engineer
• 651.796.7043
• troel_at_nacr.com