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SIP trunk and methods

Justin Pascal
Level 1
Level 1

‎11-08-2005 12:06 PM - edited ‎03-13-2019 11:09 AM

Experts:

why we need an MTP for SIp trunks and which methods are supported for CCM at this moment? I've ccm 4.1.3SR1

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gogasca
Level 10
Level 10

‎11-08-2005 12:12 PM

-----------------------------------------------------

We need MTP because of the following:

- Empty capability set for mid-call feature invocations by the Cisco IP Phone.

- DMTF for RFC2823 to signalling-band tones.

- Call progress tones when a Cisco IP Phone invokes mid-call features.

CCM supports :

- INVITE

- BYE

- CANCEL

- ACK

- PRACK

- OPTIONS

- UPDATE

http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/4_0/sys_ad/4_0_1/ccmsys/a08sip.htm#1141536

Gonz

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