[cisco-voip] Codec g728r8 on a POTS PEER?

[Ryan Ratliff]

Any call incoming to a router hits an inbound dial-peer and outbound  
dial-peer.  The 'incoming called-number .' command simply allows you  
to determine which dial-peer is matched on the inbound side.  There  
is a default pots dial-peer that all of your analog/isdn/t1 calls  
will hit if no other pots dial-peer is a better match on the inbound  
side.   Since there is nothing configured on the default dial-peer  
(and it's hidden) you get the default codec.

-Ryan

On Feb 15, 2006, at 10:14 PM, Philip Walenta wrote:

Going on memory here....

If you have a PRI or CAS T1 and you don't have an incoming called  
number or
direct-inward-dial statement, the call is temporarily placed on a  
pots port.
Since no audio is terminated, the call by default uses that codec.

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of DeRooy, Aaron H
Sent: Wednesday, February 15, 2006 8:51 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Codec g728r8 on a POTS PEER?

Inbound call over PRI to IP phone, hits h323 g/w and get immediate  
dial tone
on the land line phone and IP phone doesn't ring.

I made this break by removing the "incoming called -number . " on peer
91(its shown with icn below). With that statement in peer 91, calls  
go right
thru to CCM and IP phone.

Show voice call active bri is below. It shows only one of the usual  
pair of
endpoints. Where does it get a codec (g729r8 pri-ietf)? Can't be from  
the
config cause there's no code command on pots peers.

Is the failure for the call to find the VoIP peer a result of the  
codec miss
match? And can anyone explain why it matches 97 in the first place  
and not
91?



"from show voice all active bri"

30BD : 1201385118hs.12029 +-1 +386 pid:97 Answer 5852333001  dur  
00:00:00
tx:0/0 rx:0/0 10  (normal call clearing.)  Telephony 1/1:23:12029:
tx:0/0/0ms g729r8 pre-ietf noise:0dBm acom:0dBm

"H323 ios g/w config"

dial-peer voice 97 pots
  destination-pattern 9......
  port 1/1:23
  prefix 9
!
dial-peer voice 3 voip
  huntstop
  incoming called-number .
  destination-pattern .
  session target ipv4:10.168.0.20
  dtmf-relay h245-alphanumeric
  codec g711ulaw
  ip precedence 5
  no vad
!
dial-peer voice 91 pots
  incoming called-number .
  destination-pattern 91800.......
  direct-inward-dial
  port 1/1:23
  forward-digits 10
  prefix 91





Aaron H. DeRooy




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