12-06-2007 07:46 AM - edited 03-15-2019 07:38 AM
We have a 2811 with (2) PVDM2-64 modules on board. I want to know the best way to configure this for conferencing and transcoding and also verify the dsp's are being used. I was able to test a conference call and see the dsp resources in use, but when I do a site to site call (configured to use G711 - G729 between sites) I don't see any DSP's in use. I have verified the phone I am using and all other phones are correctly configured and using the right Media Resource group & list.
Any thoughts?
sccp local FastEthernet0/0
sccp ccm 10.x.x.0 identifier 2 version 4.0
sccp ccm 10.x.x.1 identifier 1 version 4.0
sccp
!
sccp ccm group 1
associate ccm 1 priority 1
associate ccm 2 priority 2
associate profile 1 register CONF
associate profile 2 register TRANS
!
dspfarm profile 2 transcode
description TRANS
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
maximum sessions 29
associate application SCCP
!
dspfarm profile 1 conference
description CONF
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729r8
codec g729br8
maximum sessions 6
associate application SCCP
The results of this command were during a conf call and several site to site calls:
sh dspfarm dsp active
SLOT DSP VERSION STATUS CHNL USE TYPE RSC_ID BRIDGE_ID PKTS_TXED PKTS_RXED
0 6 1.1.115 UP 1 USED conf 2 6059 65640 65640
0 6 1.1.115 UP 1 USED conf 2 6062 65483 65456
0 6 1.1.115 UP 1 USED conf 2 6068 59739 59719
Total number of DSPFARM DSP channel(s) 1
12-13-2007 01:05 PM
There are two types of Digital Signal Processors (DSPs) that can register with Cisco CallManager C549 or C5510. The type of DSPs determine how the DSP resource registers with Cisco CallManager. C5510s register to Cisco CallManager as Cisco IOS Enhanced (Conference Bridge or Transcoder), while the C549s register as Cisco IOS (Conference Bridge or Transcoder) type
You can refer this guide for more information
12-13-2007 01:40 PM
I don't know what you configured on the CUCM, but my guess is that you don't transcode at all.
Check the used codec on the phones ("doubleclick" on the "?" button on the phone). I one using G711 and the other one G729 or both G729?
BTW: There is another command to check transcoding/conferencing; sh sccp connection
/Martin
12-13-2007 01:44 PM
Both are g729. I am just wanting to verify the transcoding resources are being used. If I recall does the Call Manager provide any DSP resources (by default). If so, I checked our CM config and the phones don't have the CM as part of the Media Resource list.
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