cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
974
Views
5
Helpful
2
Replies
Highlighted

dedicated 2900 series router and video conferencing between three phones

I have been using the guide at Peter's CCIE Musings and Rants (now in colour!): Cisco ISR G2 Video Conferencing Configuration to setup the video conferencing in our company. It's working in certain offices but not others. our Northern California office has a dedicated 2921 ISR with two PVDM DSP chips installed. End devices include two Cisco 8941 camera-phones and a 9971 camera phone in the same office. Calling any one of the three extensions from any of the other three allows video to be shared. Adding a third person to that call drops the codec down to G.711 or G.729.   The 2921 is registered via SCCP with the CUCM (version 8.6). The output below illustrates the problem further.

When I initiate a call and conference in a third person we all just get black screens.  The 2921 shows:

saccavgw01#sh sccp connections       

sess_id    conn_id      stype mode     codec   sport rport ripaddr conn_id_tx

33563286   33610516     vcf   sendrecv g729a   32586 16534 172.17.154.88          

33563286   33610514     vcf   sendrecv h264    30086 16894 172.19.4.109 33610515 

33563286   33610513     vcf   sendrecv g729a   21538 16892 172.19.4.109          

33563286   33610510     vcf   sendrecv g729a   30928 16546 172.19.4.152  

Relevant DSP output:

saccavgw01#sh run | s dsp

voice-service dsp-reservation 33

dspfarm

dsp services dspfarm

dspfarm profile 1 conference video homogeneous 

codec g722-64

codec g711ulaw

codec g729ar8

codec h264 cif frame-rate 30 bitrate 320kbps

maximum sessions 8

associate application SCCP

saccavgw01#sh inv

NAME: "CISCO2921/K9 chassis", DESCR: "CISCO2921/K9 chassis"

PID: CISCO2921/K9      , VID: V03 , SN: FTX1532AL9X

NAME: "PVDM3 DSP DIMM with 32 Channels on Slot 0 SubSlot 4", DESCR: "PVDM3 DSP DIMM with 32 Channels"

PID: PVDM3-32          , VID: V01 , SN: FOC1529797P

NAME: "PVDM3 DSP DIMM with 128 Channels on Slot 0 SubSlot 5", DESCR: "PVDM3 DSP DIMM with 128 Channels"

PID: PVDM3-128         , VID: V01 , SN: FOC15441ETR

NAME: "PVDM3 DSP DIMM with 128 Channels on Slot 0 SubSlot 6", DESCR: "PVDM3 DSP DIMM with 128 Channels"

PID: PVDM3-128         , VID: V01 , SN: FOC15441EU9

Any ideas on this one?

--Athonia

2 REPLIES 2
Beginner

dedicated 2900 series router and video conferencing between thre

Hi Athonia,

Please share the output of 'show tech' from your ISR here.
Add 'codec pass-through' under DSPfarm profile in case it isnt there yet.

Thanks

dedicated 2900 series router and video conferencing between thre

This issue is now resolved.  Removing the codec entries under DSPFarm and replacing them fixed things. I'd done this in the past so I'm not sure why it worked this time around.  Anyway, here's the final config section that is allowing video sessions to operate (loudest speaker mode) between three or more video phones:

saccavgw01#sh run | s dsp

voice-service dsp-reservation 0

dspfarm

dsp services dspfarm

dspfarm profile 1 conference video homogeneous 

codec g729ar8

codec g722-64

codec g711ulaw

codec h264 cif frame-rate 30 bitrate 320kbps

maximum conference-participants 8

maximum sessions 8

associate application SCCP

CreatePlease to create content
Content for Community-Ad
August's Community Spotlight Awards