Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Least Cost Routing on AS5350 Voice Gateway

I have a few digital voice trunk lines (E1) from different service providers terminating on a single AS5350. All outbound calls are routed to the gateway from the CCM. Various providers charge different rate for different destination. I need to implement automatic Least cost routing on the gateway based on the tarrif provided by the providers without manually defining dial-peer for all the various destinations. Does anyone know how to achieve this, either on the CCM or the AS5350.

Chuks

1 REPLY

Re: Least Cost Routing on AS5350 Voice Gateway

Hi Chuck,

suppose you have several dial-peers, pointing to different VoIP providers (each with his own IP address). And all of them cover the same destination.

What might help you is called "Radius based routing".

Before placing a call, Cisco 5350 will authenticate it with a Radius server (sending the called number inside the Radius-Request attributes).

And here comes the tricky part. Suppose that this Radius server is equipped with a billing backend. It will check for the carriers who match the desired prefix. It will check the best gateway (based on the price, time of day and etc), and will send to the 5350 a special Radius-reply attribute:

h323-redirect-ipaddr

with the IP address of the gateway inside.

Cisco 5350 then will route the call to this exact IP address.

Never tested it with Cisco, but it works with Quintum, MERA MVTS, Gnugk, Sysmaster. It must work with Cisco as well.

225
Views
0
Helpful
1
Replies
CreatePlease login to create content