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Transcode does not work Cisco call manager express

Hi all,

If somebody can help me please about transcode on CISCO CCME.

I have configured transcoder on CISCO and transcoder is Active. But when I get INVITE on my CISCO with codec

g711alaw, transcoder does not work. I have configured on CISCO automated attendant which can work only with g711ulaw. I think that it should work?

arne-ccme#show sccp

SCCP Admin State: UP

Gateway Local Interface: FastEthernet0/1.101

        IPv4 Address:

        Port Number: 2000

IP Precedence: 5

User Masked Codec list: None

Call Manager:, Port Number: 2000

                Priority: N/A, Version: 7.0, Identifier: 1

                Trustpoint: N/A

Transcoding Oper State: ACTIVE - Cause Code: NONE

arne-ccme#show run

sccp local FastEthernet0/1.101

sccp ccm identifier 1 version 7.0



sccp ccm group 1

bind interface FastEthernet0/1.101

associate ccm 1 priority 1

associate profile 2 register arne-ccme


dspfarm profile 2 transcode 

codec g711ulaw

codec g711alaw

maximum sessions 3

associate application SCCP



protocol mode ipv4

sdspfarm units 5

sdspfarm transcode sessions 4

sdspfarm tag 1 arne-ccme


dial-peer voice 401 voip

destination-pattern 10

session protocol sipv2

session target ipv4:

dtmf-relay sip-notify

codec g711ulaw

no vad

Help me please!


Damjan Košir

Hall of Fame Super Gold

Re: Transcode does not work Cisco call manager express

You should never try to transcode between G.711 ulaw and A-law, because is not necessary.

The system converts to the right version automatically under all conditions.

Moreover, all Cisco producs, including CME and CUE, use ulaw as onlG.711 version, and for that they must be configured. That is true even if you are outside US where A-law is used on PSTN.

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