SIP Trunk Specifics

[fkramarski]

Hey All,

I'm newer to the SIP world with Cisco and have a few basic questions I am having a hard time finding answers for, so please bear with me if the questions have obvious answers that I may have missed.

A little back ground.

We are integrating a Cisco CUCM release 7.0 to an internal IVR using SIP Trunks.

The questions are:

Is there licensing specifically for SIP Trunks?

How many simultaneous calls can be pushed through a single SIP Trunk?

How do I calculate the required amount of bandwidth needed on the LAN based on the numbers of calls across the SIP Trunk or Trunks?

Thanx...Frank

[KonradStepniewski · Accepted solution]

Hey,

Is there licensing specifically for SIP Trunks? - no special license needed.

How many simultaneous calls can be pushed through a single SIP Trunk? - there is no limit except your bandwidth

How do I calculate the required amount of bandwidth needed on the LAN based on the numbers of calls across the SIP Trunk or Trunks? - based on codecs you use, check this link for full information: http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a0080094ae2.shtml

[Jaime Valencia · Accepted solution]

No licensing required, also no maximum number of calls (depends on BW you have or calls the telco will allow).

For the BW use this tool:

Voice Codec Bandwidth Calculator

http://tools.cisco.com/Support/VBC/do/CodecCalc1.do

HTH

java

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