IOS Transcoding and Conferencing on NM-HDV

Posted: March 27, 2006 by sankar in Media Resources

1. Copy mac-address of the interface that you want to use to register with Callmanager. (match with sccp local command)

2. Add a new IOS conference bridge with device name "CFBxxxxxxxxxxxx" or a new IOS Transcoder with "MTPxxxxxxxxxxxx".

3. Type the following commands in the router

########Enable DSPfarm services under appropriate slot################

voice-card 1
 dsp services dspfarm

###############Activates dsp farm and sets max number of sessions#################

dspfarm transcoder maximum sessions 4   —- configures max number of conf. sessions (4 transcoding sessions take 1 dsp)
dspfarm confbridge maximum sessions 2  —- configurs max number of transcoding sessions (1 conferencing session take 1 dsp)

dspfarm

sccp local FastEthernet0/0.2  —- specifies a local interface to use to register with callmanager. Use mac-address of this interface.
sccp  —- globally enables SCCP.
sccp ccm 10.1.21.33 priority 1  —- specifies the callmanager with priority of 1. Specify up to 4 callmanagers.

sccp ccm 10.1.21.34 priority 2 —– specify backup callmanager

If the transcoder or Cfb does not register with callmanager,

a. try reset it from callmanager.

b. do a "no sccp" and then do a "sccp" and see if it registers.

Output of "sh sccp"
SITE3-R3#sh sccp
SCCP Admin State: UP
Gateway IP Address: 192.168.221.240
Switchover Method: IMMEDIATE, Switchback Method: GUARD_TIMER
Switchback Guard Timer: 1200 sec, IP Precedence: 5
Max Supported MTP sessions: 0
User Masked Codec list: None
Transcoding Oper State: ACTIVE – Cause Code: NONE
Active Call Manager: 10.1.21.33, Port Number: 2000
TCP Link Status: CONNECTED
Conferencing Oper State: ACTIVE – Cause Code: NONE
Active Call Manager: 10.1.21.33, Port Number: 2000
TCP Link Status: CONNECTED
Call Manager: 10.1.21.33, Port Number: 2000
                Priority: 1, Version: 3.1 or Higher 

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Comments
  1. Raj says:

    Hi,

    I do have a question on DSPFARM configuration.

    What is the differnece between
    voice-card 1
    no dspfarm
    dsp services dspfarm

    and

    voice-card 1
    dspfarm
    dsp services dspfarm

    REgards,
    Raj

  2. These kinds of backups shouldn’t be a chore. A decent backup plan will go forever.

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