Call Fails when MCP has multi NICs

Architect & Flows
1

Hello all,

I have a interesting stutiation:

  • When MCP server has a NIC eth0 : call’s result to IVR service is OK with RTP.
  • But when i add a new NIC for storage network ( eth1 without default GW, eth0 has higher priority and has a default GW to route to client ). I tried to call to IVR service : signalling between componets is OK, but have no voice ( RTP ). I checked and figure out that :

Cleint …invite…> SIP …> RM …> MCP (eth0 received message)
Cleint <… SIP <… RM <…200 OK … MCP (eth0 sent 200 ok)
client … RTP …> MCP

But, in the 200 OK message body from MCP has " Owner/ Creactor" attribute has value is eth1 . So that, client sent RTP mesage to eth1 of MCP ( message not able to destination because eth1 has no gateway).

anyone met this stituation ? with a solution to MCP indicate that client must sent RTP to eth0 instead of eth1. (please suggest solution without adding static route from client to MCP )

Thanks guys,
Le

2

You need to configure the transport settings for that NIC. By default is any NIC, but you can define an static ip address.
You have to configure Sip server, RM and MCP
Follow documentation

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3

Hi,

Could you provide more detailed info to define an static ip address for MCP ?

4

Check transport settings for the application. That is it.

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5

Thank cavagnaro,

This issue is resolved by setting rtp.localaddr to expected ip address.