[cisco-voip] Setting up local DSP resources on 2821

Erik Erasmus (E) ErasmuE4 at telkom.co.za
Tue Jul 18 15:19:49 EDT 2006


Hi Ted

Sounds like you have done it a couple of times.

Q1. I notice in the config examples they have an example that has

voice-card 1
no dspfarm
dsp services dspfarm

bit confusing - why no dsprarm and right below it dsp services dspfarm
???

Q2. They also show
associate profile 10 register CFB123456789966
associate profile 6 register MTP123456789988

where does the values after register come from - are they arbitrary
things one choose and need to be unique per site and per profile I
register etc.???


Q3.
I have a 2801 with one PVDM2-8 - currently 1 x pvdm2-8 to terminate 6
isdn bri channels (3lines). Will add another DSP - probably a PVDM2-32
later for the trancoding and conferencing services.

I believe I will probably have to use soothing like this.

voice-card 0
dsp services dspfarm
etc etc. with the profiles and so on


My question is basically - does the above look correct -- if I want
the gateway to operate as h323 gateway and also do some hardware
transcoding and conferencing. It will not be a dedicated DSP farm.

my partial config for the h323 voice gateway currently without any DSP
services for transcoding and conferencing is like this:

--config at branch H323 gateway---
!
---
Break
----

network-clock-participate wic 1
network-clock-participate wic 2
network-clock-select 1 BRI0/1/0
network-clock-select 2 BRI0/1/1
!
isdn switch-type basic-net3
!
voice-card 0
!
------Have to add the bits here for xcoding and conferencing-------
!        
no voice call carrier capacity active
!
voice service voip
 h323
 modem passthrough nse codec g711ulaw
!
!
voice class codec 1
 codec preference 1 g729r8
 codec preference 2 g711ulaw
!
!
voice class permanent 1
!
!
voice class h323 1
 h225 timeout tcp establish 5
  call preserve
!
!
!
interface BRI0/1/0
 description Voice to telco....
 no ip address
 no logging event link-status
 isdn switch-type basic-net3
 isdn point-to-point-setup
 isdn incoming-voice voice
 isdn send-alerting
!
interface BRI0/1/1
 etc
!
!
voice-port 0/1/0
 compand-type a-law
 cptone ZA
 timeouts interdigit 3
!
voice-port 0/1/1
etc
!
!
!
dial-peer voice 500 voip
 description IP Tel to primary CCM
 preference 1
 destination-pattern 13..
 progress_ind setup enable 3
 modem passthrough nse codec g711ulaw
 voice-class codec 1
 voice-class h323 1
 session target ipv4:10.x.x.x
 dtmf-relay h245-alphanumeric
 fax rate disable
 no vad
!
dial-peer voice 9901 pots
 preference 1
 incoming called-number .T
 direct-inward-dial
!
dial-peer voice 10 pots
 corlist outgoing call-National
 preference 1
 destination-pattern 009T
 progress_ind setup enable 3
 progress_ind alert enable 8
 progress_ind progress enable 8
 progress_ind connect enable 8
 progress_ind disconnect enable 8
 direct-inward-dial
 port 0/1/0
 forward-digits 10
!
Etc....

Erik Erasmus

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