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Transcoder Configuration Router 3825

Hello

I'm trying to setup a transcoder with Call Manager 6.1, but i have an issue when i try to setup the dspfarm-profile, in the maximun session the router doesn't have resources left. but the router has 64dsp install:

PVDM Slot 0:
64-channel (G.711) Voice/Fax PVDMII DSP SIMM PVDM daughter card

Also i have:

ontroller T1 0/1/0
framing sf
linecode ami
ds0-group 0 timeslots 1-24 type e&m-wink-start
!        
controller T1 0/1/1
framing sf
linecode ami
ds0-group 0 timeslots 1-24 type e&m-wink-start

The card are consuming only 48 dsp.

The version of the IOS: c3825-spservicesk9-mz.124-15.T3.bin

What could be the issue?

Thanks

2 REPLIES
New Member

Re: Transcoder Configuration Router 3825

I would start by verifying that you've determining how many dsp resources you have available then go from there. Remember every 16 MB of pvdm memory equals to one DSP. More than likely if you're short of DSP resources you'll need to add another PVDM or increase the memory (replace).

If you type "show voice dsp group all". Find amount of "num_of_sig_chnls_allocated" make sure that the value of the channels allocated on at least one of your DSP resources is set to 0 (meaning its free/available to use). I've pasted an output from my router. On DSP 7 and DSP8 of my router, you'll see that 0 channels are used. (BOLD TEXT)


3825#sh voice dsp group all
DSP groups on slot 0:
dsp 1:
  State: UP, firmware: 9.4.12
  Max signal/voice channel: 16/16
  Max credits: 240
  num_of_sig_chnls_allocated: 16
  Transcoding channels allocated: 0
  Group: FLEX_GROUP_VOICE, complexity: FLEX
    Shared credits: 240, reserved credits: 0
    Signaling channels allocated: 16
    Voice channels allocated: 0
    Credits used: 0

dsp 2:
  State: UP, firmware: 9.4.12
  Max signal/voice channel: 16/16
  Max credits: 240
  num_of_sig_chnls_allocated: 16
  Transcoding channels allocated: 0
  Group: FLEX_GROUP_VOICE, complexity: FLEX
    Shared credits: 240, reserved credits: 0
    Signaling channels allocated: 16
    Voice channels allocated: 0
    Credits used: 0

dsp 5:
  State: UP, firmware: 9.4.12
  Max signal/voice channel: 16/16
  Max credits: 240
  num_of_sig_chnls_allocated: 4
  Transcoding channels allocated: 0
  Group: FLEX_GROUP_VOICE, complexity: FLEX
    Shared credits: 240, reserved credits: 0
    Signaling channels allocated: 4
    Voice channels allocated: 0
    Credits used: 0

dsp 7:
  State: UP, firmware: 9.4.12
  Max signal/voice channel: 16/16
  Max credits: 240
  num_of_sig_chnls_allocated: 0
  Transcoding channels allocated: 0
  Group: FLEX_GROUP_VOICE, complexity: FLEX
    Shared credits: 240, reserved credits: 0
    Signaling channels allocated: 0
    Voice channels allocated: 0
    Credits used: 0

dsp 8:
  State: UP, firmware: 9.4.12
  Max signal/voice channel: 16/16
  Max credits: 240
  num_of_sig_chnls_allocated: 0
  Transcoding channels allocated: 0
  Group: FLEX_GROUP_VOICE, complexity: FLEX
    Shared credits: 240, reserved credits: 0
    Signaling channels allocated: 0
    Voice channels allocated: 0
    Credits used: 0
        

-Erik

Cisco Employee

Re: Transcoder Configuration Router 3825

Always a nice idea to start by checking if you really have free resources, also notice that depending on which codecs you enable under the dspfarm the dsp channels requirements might go up really quick and the sessions will go down.

Table 5     DSP Theoretical Session Capacities

http://www.cisco.com/en/US/docs/ios/voice/cminterop/configuration/guide/vc_enh_confr_vgr_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1068869

Only select the codecs you really need to XCODE.

HTH

java

If this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

www.cisco.com/go/pdi
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