Codec problems

[davidoates]

Trying to force certain dial-peers to use a different codec. The following config we have setup in a lab. 2 MC3810's. 2 phones. Simulated WAN circuit using a serial cable between the 3810's with a DLCI of 231.

Router A:

dial-peer voice 1 pots

destination-pattern 10

port 1/1

dial-peer voice 2 pots

destination-pattern 11

dial-peer voice 101 vofr

destination-pattern 2.

session target Serial0 231

dial-peer voice 102 vofr

destination-pattern 20

session target Serial0 231

codec g711ulaw

Router B:

dial-peer voice 1 pots

destination-pattern 20

port 1/1

dial-peer voice 2 pots

destination-pattern 21

dial-peer voice 101 vofr

destination-pattern 1.

session target Serial0 231

dial-peer voice 102 vofr

destination-pattern 10

session target Serial0 231

codec g711ulaw

When I try to call 10, it does not default to the codec I specified and vice-versa. It continues to use g729ar8. I verify this when I do a "show voice ports summary". Any ideas? Thanks in advance.

Dave

[amritpatek]

There is a conflict in the destination patterns of the vofr dial-peers. One is " 1." and another is "10" Hence the problem. They need to be very specific or different as it will take the longest match." 10 " matches with " 1. "also.

Additionally, you may like to verify your conifguration with the following document:

VoFR Encapsulation and Fragmentation

http://www.cisco.com/en/US/tech/tk652/tk692/technologies_tech_note09186a00800942e1.shtml

[foad_nemo]

Dear davidoates

add this config to your Terminator Router :

voice class codec 10

codec preference 1 g729r8

codec preference 2 g723r63

codec preference 3 g723r53

!

voice class h323 205

codec bytes preferred local

!

!

dial-peer voice 101 vofr

destination-pattern 1.

session target Serial0 231

voice-class codec 10

voice-class h323 205

!

dial-peer voice 102 vofr

destination-pattern 10

session target Serial0 231

voice-class codec 10

voice-class h323 205

Foad Godarzy (IT Manager)