what is sip trunking? thomas roel convergence sales engineer 651.796.7043 [email protected]
TRANSCRIPT
SIP in the Enterprise
Leading topic of Conversation: TRUNKING
Collaboration is a significant conversation pieceoPresence is a new requirementoBYODoApplication Distribution and Sequencing
oCEBP – event-triggered communications
ISDN & Analog Trunking
SIP Provider
SIP Provider
WAN Service
Call Server
TDM endpoints
IP endpoints
PSTNPSTN
The current “gold standard” … but
fading
TDM trunk
SIP Trunking JustificationsService 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
Why SIP Trunking is good.
dynamicsmaller
foot-print
lower costviable
technology
SIP Trunking Example
WAN Service
Call Server
TDM endpoints
IP endpoints
PSTNPSTNSIP Provider
SIP Provider
SIP Services
Session Border Controller
(SBC)
FOCUS on SIP TrunkingUsing 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
Challenges Vendor/Carrier Experience
o 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
Network NormalizationTCP & TLS
Security & QoSClear-Text & VoIP
Firewall & NAT traversalNAT breaks SIP
SIP Normalization“Open Standards”
other
SIP Trunking “considerations”
