SIP Trunk Provider only supports G711Alaw - Transcoding

peter.rowe · ‎09-07-2009

Hi Folks,

I have a SIP provider that is working great for calls in & out except to Voicemail, which is a big problem.

can someone help with transcoding set-up for Unity Express, I already have transcoding enabled for Meetme etc, anyone done this? How do I force the dial-peer not to Transfer the inbound SIP call , but to transdode any sessions to this?

I have the usual SIP dial-peer set-up to unity express currently.

Many thanks.

Marcos Hernandez · ‎09-07-2009

Hi Peter,

Meet-me does not enable trancoding, but rather conferencing, which is a different DSP feature. Use this sample CLI to enable transcoding (this assumes 3 trancoding sessions and that enough DSP resources ara available):

voice-card 0
dspfarm
dsp services dspfarm
!
sccp local Loopback0
sccp ccm 10.1.1.1 identifier 1 version 4.1
sccp
!
sccp ccm group 1
associate ccm 1 priority 1
associate profile 3 register mtp123412341234
!
dspfarm profile 3 transcode
codec g711ulaw
codec g711alaw
codec g729abr8
codec g729ar8
codec g729r8
maximum sessions 1
associate application SCCP
no shutdown
!
dspfarm
!
telephony-service
sdspfarm units 3
sdspfarm transcode sessions 3
sdspfarm unregister force
sdspfarm tag 3 mtp123412341234
ip source-address 10.1.1.1 port 2000
!

Marcos