Hello everybody,
I need help with Inband to RFC2833 interworking. We have some devices that only can send Inband DTMF. That is the problem since CUCM can only understand RFC2833 or some other Out of band method like SIP INFO. Anyway we have Cisco 2811 configured as MTP with this configuration:
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voice-card 0
dsp services dspfarm
sccp local FastEthernet0/0
sccp ccm xx.xx.xx.xx identifier 1 priority 1 version 6.0
sccp ccm xx.xx.xx.xx identifier 2 priority 2 version 6.0
sccp
sccp ccm group 1
description TRANSCODE
associate ccm 1 priority 1
associate ccm 2 priority 2
associate profile 2 register TRANS_01
switchover method immediate
switchback interval 120
!
dspfarm profile 2 transcode
description === transcode profile 2 ===
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729r8
maximum sessions 36
associate application SCCP
dial-peer voice 400 voip
description === from provider ===
voice-class codec 1
session protocol sipv2
incoming called-number xxx
fax rate disable
no vad
dial-peer voice 202 voip
description === to CUCM ===
preference 1
destination-pattern xxx
voice-class codec 1
session protocol sipv2
session target ipv4:xx.xx.xx.xx
dtmf-relay rtp-nte
fax rate disable
no vad
show sccp
Transcoding Oper State: ACTIVE - Cause Code: NONE
show dspfarm
SLOT DSP VERSION STATUS CHNL USE TYPE RSC_ID BRIDGE_ID PKTS_TXED PKTS_RXED
0 1 24.3.0 UP N/A FREE xcode 1 - - -
0 1 24.3.0 UP N/A FREE xcode 1 - - -
0 1 24.3.0 UP N/A FREE xcode 1 - - -
0 1 24.3.0 UP N/A FREE xcode 1 - - -
0 1 24.3.0 UP N/A FREE xcode 1 - - -
0 1 24.3.0 UP N/A FREE xcode 1 - - -
0 2 24.3.0 UP N/A FREE xcode 1 - - -
0 2 24.3.0 UP N/A FREE xcode 1 - - -
0 2 24.3.0 UP N/A FREE xcode 1 - - -
0 2 24.3.0 UP N/A FREE xcode 1 - - -
0 2 24.3.0 UP N/A FREE xcode 1 - - -
0 2 24.3.0 UP N/A FREE xcode 1 - - -
0 3 24.3.0 UP N/A FREE xcode 1 - - -
0 3 24.3.0 UP N/A FREE xcode 1 - - -
0 3 24.3.0 UP N/A FREE xcode 1 - - -
0 3 24.3.0 UP N/A FREE xcode 1 - - -
0 3 24.3.0 UP N/A FREE xcode 1 - - -
0 3 24.3.0 UP N/A FREE xcode 1 - - -
0 4 24.3.0 UP N/A FREE xcode 1 - - -
0 4 24.3.0 UP N/A FREE xcode 1 - - -
0 4 24.3.0 UP N/A FREE xcode 1 - - -
0 4 24.3.0 UP N/A FREE xcode 1 - - -
0 4 24.3.0 UP N/A FREE xcode 1 - - -
0 4 24.3.0 UP N/A FREE xcode 1 - - -
0 5 24.3.0 UP N/A FREE xcode 1 - - -
0 5 24.3.0 UP N/A FREE xcode 1 - - -
0 5 24.3.0 UP N/A FREE xcode 1 - - -
0 5 24.3.0 UP N/A FREE xcode 1 - - -
0 5 24.3.0 UP N/A FREE xcode 1 - - -
0 5 24.3.0 UP N/A FREE xcode 1 - - -
0 6 24.3.0 UP N/A FREE xcode 1 - - -
0 6 24.3.0 UP N/A FREE xcode 1 - - -
0 6 24.3.0 UP N/A FREE xcode 1 - - -
0 6 24.3.0 UP N/A FREE xcode 1 - - -
0 6 24.3.0 UP N/A FREE xcode 1 - - -
0 6 24.3.0 UP N/A FREE xcode 1 - - -
Total number of DSPFARM DSP channel(s) 36
show inventory
NAME: "PVDM 0", DESCR: "PVDMII DSP SIMM with four DSPs"
PID: PVDM2-64 , VID: V01 , SN: FOC1130122Z
NAME: "PVDM 1", DESCR: "PVDMII DSP SIMM with Two DSPs"
PID: PVDM2-32 , VID: NA , SN: FOC093622KJ
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Transcoding is configured on CUCM as well.
If I understood correctly with this setup MTP should do Inband to RFC2833 transcoding. Did we miss something?
Thanks in advanced.
