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Wrong SIP media interface

Hello,

"bind media source-interface" is not configured under "voice service voip" so CME chooses local SIP media interface based on route

to particular endpoint.  This works correctly with CUCM and Asterisk.

While configuring SIP trunk media bypass with Lync 2013 I noticed that wrong interface is chosen, 192.168.126.230 is the Management interface.

SIP/2.0 183 Session Progress

.........

Contact: <sip:9XXXXXXX@192.168.126.230:5060;transport=tcp>

Supported: sdp-anat

Server: Cisco-SIPGateway/IOS-15.2.3.T2

Content-Type: application/sdp

Content-Disposition: session;handling=required

Content-Length: 267

v=0

o=CiscoSystemsSIP-GW-UserAgent 905 3964 IN IP4 192.168.126.230

s=SIP Call

c=IN IP4 192.168.126.230

t=0 0

m=audio 20628 RTP/AVP 8 13 101

c=IN IP4 192.168.126.230

a=rtpmap:8 PCMA/8000

a=rtpmap:13 CN/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-16

In this case, Lync endpoint IP address is: 192.168.126.69.

sh ip route 192.168.126.69

Routing entry for 192.168.0.0/16, supernet

  Known via "static", distance 1, metric 0

  Routing Descriptor Blocks:

  * 192.168.126.225

      Route metric is 0, traffic share count is 1

interface GigabitEthernet0/2.830

description [ IP Telephony ]

encapsulation dot1Q 830

ip address 192.168.125.230 255.255.255.248

So, instead of 192.168.125.230 IP 192.168.126.230 is used.

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New Member

Wrong SIP media interface

share the configuration

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