How to define a specific ip address as source for sip trunk with SIP provider

[filiberto.aguirre]

Hi,

I need to set a SIP trunk with CME and SIP provider, I have already defined network segment for voice and data, but SIP provider told  me that I need to send a specific IP address ( 172.53.225.130 / 30) in order to be allowed to make call through SIP server.

My doubt is how can I set the config in router in order  to sent the IP address SIP provider required as source, if I have already defined voice segment where CME, unity express and ip phones will be.

This SIP provider is going to delivered also a MPLS link for DATA in the same interface (fastethernet), the segment for MPLS data is 172.53.1.6 / 30.

Any recommendation??

regards

CME express                  

interface GigabitEthernet0/0.3

DESCRIPTION  DATA LAN

encapsulation dot1Q 3 native

ip addres 172.29.57.154 255.255.255.0

interface GigabitEthernet0/0.6

description CME

ip address 172.29.67.154 255.255.255.0

h323-gateway voip bind srcaddr 172.29.67.154

encapsulation dot1Q 6

[Karthik Sivaram]

hi filiberto,

1. enable

2. configure terminal

3. voice service voip

4. sip

5. bind all source-interface x/x

6. exit

Use the above config .

http://www.cisco.com/en/US/docs/ios/12_3/sip/configuration/guide/chapter7.html

Hope this helps!

Regards,

Karthik

[filiberto.aguirre]

Hi  Karthink,

Thanks a lot for the link, finally I understood why I have to use bind option .

regards

[Ayodeji Okanlawon · Accepted solution]

This is very easy to do with sip bind commands. Eg if the ip address is configured for loopback interface for example...

int loop0

ip address 172.53.225.130 255.255.55.252

voice service voip

sip

  bind control source-interface loop0

  bind media source-interface loop0

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[filiberto.aguirre]

Hi aokanlawon,

thanks  a lot for your clear example, with it I can go on with the config.

regards