[cisco-voip] no audio!

[Kenneth Hayes]

Switch config? And Router config?

Sent from my iPhone

On Feb 15, 2013, at 1:49 PM, "José Paulo de Oliveira Petry" <
petrybr at gmail.com> wrote:

Hello,

i already have a ticket on Cisco TAC, they are looking this with me for
more than 1 week without success... maybe someone here can give me some
ideas to fix this issue...

Topology:

phone <-- SCCP --> cucm 9.1 <-- SIP Trunk --> VoiceGW (Cisco 2921) <-- SIP
Trunk --> itsp (pstn)

no firewall!

Calls from a phone registered in CUCM to specfic prefixes and some
toll-free numbers are without audio ( A cant hear B and B cant hear A)..
Calls from a phone connected in a FXS port in VoiceGW and registered in
CUCM (stcapp) for the same numbers works ok!
Calls from a phone registered in a CME running on VoiceGW for the same
numbers works ok!

When calling from the phone registered in CUCM, and while the call is
active but without audio, if i run "show voip rtp conn" i can see two
streams:

VoiceGW <-> phone
VoiceGW <-> ITSP

at wireshark, i only see RTP packets from my phone to VoiceGW... so voicegw
is not sending rtp packets to my phone..

#show voip rtp conn
VoIP RTP active connections :
No. CallId     dstCallId  LocalRTP RmtRTP     LocalIP
         RemoteIP

7     202        203        20800    28626    10.143.142.178
          192.168.250.43

8     203        202        21156    51020    10.143.142.178
          10.152.201.42

another output:

#show call active voice bri
0    : 202 7625720ms.1 +3210 pid:2 Answer 454 active
 dur 00:00:13 tx:0/0 rx:671/13420
 IP 192.168.250.43:28626 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0
delay:0/0/0ms g729r8 TextRelay: off
 media inactive detected:n media contrl rcvd:n/a timestamp:n/a
 long duration call detected:n long duration call duration:n/a timestamp:n/a

0    : 203 7625720ms.2 +3210 pid:8 Originate 08006016465 active
 dur 00:00:13 tx:671/13420 rx:0/0
  IP 10.152.201.42:51020 SRTP: off rtt:0ms pl:0/0ms lost:0/0/0
delay:0/0/0ms g729r8 TextRelay: off
 media inactive detected:n media contrl rcvd:n/a timestamp:n/a
 long duration call detected:n long duration call duration:n/a timestamp:n/a


I already tried forcing g711a and g729r8, but in both cases there is no
audio...

can someone give us some help??


Regards,
José Paulo de Oliveira Petry
petrybr at gmail.com

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