<div dir="ltr">Hello,<div><br></div><div style>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...</div>
<div style><br></div><div style>Topology:<br></div><div><br></div><div>phone <-- SCCP --> cucm 9.1 <-- SIP Trunk --> VoiceGW (Cisco 2921) <-- SIP Trunk --> itsp (pstn)</div><div><br></div><div style>no firewall!</div>
<div><br></div><div>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)..</div><div style>Calls from a phone connected in a FXS port in VoiceGW and registered in CUCM (stcapp) for the same numbers works ok!</div>
<div style>Calls from a phone registered in a CME running on VoiceGW for the same numbers works ok!</div><div style><br></div><div>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:</div>
<div><br></div><div>VoiceGW <-> phone</div><div style>VoiceGW <-> ITSP</div><div style><br></div><div style>at wireshark, i only see RTP packets from my phone to VoiceGW... so voicegw is not sending rtp packets to my phone..</div>
<div style><br></div><div style><div>#show voip rtp conn</div><div>VoIP RTP active connections :</div><div>No. CallId dstCallId LocalRTP RmtRTP LocalIP RemoteIP</div><div><br></div>
</div><div style><div>7 202 203 20800 28626 10.143.142.178 192.168.250.43</div><div><br></div><div>8 203 202 21156 51020 10.143.142.178 10.152.201.42</div>
</div><div><br></div><div style>another output:</div><div style><br></div><div style>#show call active voice bri<br></div><div style><div>0 : 202 7625720ms.1 +3210 pid:2 Answer 454 active</div><div> dur 00:00:13 tx:0/0 rx:671/13420</div>
<div> IP <a href="http://192.168.250.43:28626">192.168.250.43:28626</a> SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g729r8 TextRelay: off</div><div> media inactive detected:n media contrl rcvd:n/a timestamp:n/a</div>
<div> long duration call detected:n long duration call duration:n/a timestamp:n/a</div><div><br></div><div>0 : 203 7625720ms.2 +3210 pid:8 Originate 08006016465 active</div><div> dur 00:00:13 tx:671/13420 rx:0/0</div>
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IP <a href="http://10.152.201.42:51020">10.152.201.42:51020</a> SRTP: off rtt:0ms pl:0/0ms lost:0/0/0 delay:0/0/0ms g729r8 TextRelay: off</div><div> media inactive detected:n media contrl rcvd:n/a timestamp:n/a</div><div>
long duration call detected:n long duration call duration:n/a timestamp:n/a</div></div><div style><br></div><div style><br></div><div style>I already tried forcing g711a and g729r8, but in both cases there is no audio...</div>
<div style><br></div><div style>can someone give us some help??</div><div style><br></div><div style><br></div><div style>Regards,</div><div><div>José Paulo de Oliveira Petry<br><a href="mailto:petrybr@gmail.com" target="_blank">petrybr@gmail.com</a><br>
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