topic Re: Redirecting Voip call to another termination router in Voice over IP

Redirecting Voip call to another termination router

uasahin — Tue, 25 Feb 2003 08:51:20 GMT

Hello All

The structure is very simple: There is one originating router (as5300 let say A) and

one terminating router (as5300 let say B) with 1 pri line. I want to route some calls whose have specific destination pattern from B to another router (let say C) to be terminated.

I have used "dial-peer voice xx voip" with "session target ipv4:x.x.x.x. on B.

But it failed. When I debug it on B ,it gives " can not gateway with C".

Do you think the idea is wrong for this structure . or how can I do this ( PS :I can administrate only termination routers )

thanks in advance..

Re: Redirecting Voip call to another termination router

tepatel — Wed, 26 Feb 2003 22:13:08 GMT

Need to see the running config on B which receives the call on one of the bchannel of PRI line and trying to send it to C over Voip. Also include the debug that you are getting with it.

Re: Redirecting Voip call to another termination router

uasahin — Wed, 26 Feb 2003 23:19:43 GMT

to tapatel:

First of all thank you for your assistance

Router B is not making call origination, it is only termination router.

Router A (I do not manage router A), is sending voip calls to B and I want to route some calls which has specific destination pattern from B to C. The configuration for B is like this:

! the dial-peer 101 and 99 below is working properly

dial-peer voice 101 pots

destination-pattern 3054T

port 0:1

prefix ,054

dial-peer voice 99 voip

destination pattern 3054T

session target ipv4:10.2.2.2 (the ip address of router A)

! I want to route it to router C with the lines below

dial-peer voice 102 voip

destination-pattern 30549238.....

session target ipv4:10.10.1.124 (this is the ip address of router C)

!!!!!!!!!!!!!!!!!!!!!!!

May be I have to use gatekeeper for this project but i am not sure if it is necessary.

Re: Redirecting Voip call to another termination router

kmcsweeg — Thu, 27 Feb 2003 02:59:38 GMT

Not sure if this would help you but this config for H323 works well

on my config..

interface Loopback2

description *** VOIP Loopback ***

ip address 10.12.32.14 255.255.255.255

h323-gateway voip interface

h323-gateway voip bind srcaddr 10.12.32.14

Kevin

Re: Redirecting Voip call to another termination router

rocampo — Thu, 27 Feb 2003 10:17:04 GMT

This looks like "Tandem Switching"

AFAIK you cant do Tandem Switching with VOIP.

Re: Redirecting Voip call to another termination router

tepatel — Thu, 27 Feb 2003 20:27:58 GMT

So B will receive Voip call from A and will pass Voip call to C based on destination pattern right? No..its not supprted yet. You are looking for some sort of Tendom VoIP calling or IP-IP gateway in cisco's world. You want to do switching between two Voip call legs.

That IP-IP gateway is in the testing now will be supprted in next releases within 2-3 months.

Re: Redirecting Voip call to another termination router

uasahin — Sat, 01 Mar 2003 15:17:08 GMT

Thank you tepatel

So I think I should use gatekeeper for routing calls according to dialled numbers to be terminated on the desired gateway.

Re: Redirecting Voip call to another termination router

uasahin — Mon, 03 Mar 2003 13:09:21 GMT

To tepatel:

One more question from this scenerio;

if I want to block those numbers on B instead of routing them to C ,

what should be the configuration look like?

thanks in advance...

Re: Redirecting Voip call to another termination router

tepatel — Tue, 04 Mar 2003 04:04:07 GMT

Just change the network setup accordingly. Again the rule is "Voip call to a gateway needs to be forwarded to POTS dial-peer".

Re: Redirecting Voip call to another termination router

tepatel — Sat, 08 Mar 2003 00:15:05 GMT

Those calls will be blocked on B as B will not be able to switch VoIP calls from A to C. So no need to worry about.