Cisco H323 Gateway codec issue

[VINNY HSU]

I have a strange behavior on my h323 gateway.

Scenario: CUCM 8.6(x) ---> Gatekeep ---> H323 Gateway ----> E1 trunks.

when I call to this gateway some time work but some time not work.

All calls form CUCM to H323 gateway are dial-peer 100 for inbound and exit on pots dial-peers to PBX.

when the call are not work, i show voice call status the code will be none
CallID     CID  ccVdb      Port        Slot/DSP:Ch  Called #   Codec    MLPP Dial-peers
0x9A       1B3D 0x30E70444 0/0/0:15.15      0/1:1  *392114683  None      100/10
1 active call found

when the call are work, i show voice call status the code will be g729br8
CallID     CID  ccVdb      Port        Slot/DSP:Ch  Called #   Codec    MLPP Dial-peers
0x9C       163D 0x30E70444 0/0/0:15.15      0/1:1  *392114683  g729br8   100/10
1 active call found

I did't not change any thing beween this two call, what can case this?

[Tagir Temirgaliyev]

please copy paste here

sh run all | b dial-peer voice pots 100

codec 729r8 is default in voip dial-peers, not in pots dial-peers

you can change it

see also region codec and codec in sip trunk on CUCM

[VINNY HSU]

thank for your reply

we have a lot of VOIP site, so we use gatekeep to simple the config. And I already change this site to use H323 gateway directly to CUCM, but it have same issue,

I config this site are same as other site, but only this site have problem. the dial-peer config as below

dial-peer voice 100 voip
 incoming called-number .
!
dial-peer voice 10 pots
 description route to PBX
 destination-pattern 3921
 direct-inward-dial
 port 0/0/0:15
 forward-digits 5
!
dial-peer voice 101 voip
 destination-pattern .T
 session target ras
!

[VINNY HSU]

i already do the debug for voip ccapi inout, the log output as attach file.

[Suresh Hudda]

Can you try creating voice class codec and assign it voip dial-peer 100 as below..

voice class codec 100
 codec preference 1 g711ulaw
 codec preference 2 g711alaw
 codec preference 3 g729r8

dial-peer voice 100 voip

voice-class codec 100 

Suresh

[VINNY HSU]

I already try enable voice-class on dial-peer 100, but it still not work,

[Ayodeji Okanlawon]

From the logs, we can see that CUCM is disconnecting the call with cause code 16, that means normal call clearing...Are you sure this is the log for a call that failed?

Jul 30 01:37:13.637: //183/00C6E6D5C631/CCAPI/cc_process_notify_bridge_done:
   Conference Id=0x57, Call Id1=183, Call Id2=184
*Jul 30 01:37:21.377: //183/00C6E6D5C631/CCAPI/cc_api_call_disconnected:
   Cause Value=16, Interface=0x2A43B980, Call Id=183
*Jul 30 01:37:21.377: //183/00C6E6D5C631/CCAPI/cc_api_call_disconnected:
   Call Entry(Responsed=TRUE, Cause Value=16, Retry Count=0)
 

If it is for a call that failed, then we will have to see the logs on cucm to see why cucm is disconnecting the call...

You should also reconfigure your dial-peer 100

dial-peer voice 100 voip
incoming called-number .

dtmf-relay h245-alpha

no vad

[VINNY HSU]

Because i have to monitor the call status when i test the call, so when i see the call status codec are none, i disconnect the call from IP-Phone.

[Ayodeji Okanlawon · Accepted solution]

You need to let the call fail and collect the logs. We need to know why the call is failing...You need to send us logs from both the h323 gateway and the gatekeeper..

Use the commands below to properly setup your gateway for the logs

service sequence-numbers
service timestamps debug datetime localtime msec
logging buffered 10000000 debug
no logging console
no logging monitor
default logging rate-limit
default logging queue-limit

Then..

<Enable debugs, then test again.>

debug voip ccapi inout

debug h225 asn1

debug h245 asn1

<Enable session capture to txt file in terminal program.> (such as Putty)

then do the ff:

terminal length 0
show logging

[Ayodeji Okanlawon]

Why do you have a getekeeper between your CUCM and h323 gateway? Why not connect your H323 gateway directly to CUCM?