cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1002
Views
0
Helpful
2
Replies

Securing SIP Trunk

Chuan Liu
Beginner
Beginner

I have a 3845 with 2 ISDN PRA interfaces running as a PSTN gateway. Customers running various PBX systems connecting to this gateway via SIP trunks. I want certain calls from a specific customer go outof a specific PRA. I achieve this by checking 'calling-number' with the 'answer-address' command. But problems arise when the calling numbers are not presented correctly as calls will go out the wrong PRA interface. Is there a way to check both calling-number and source IP address to route the calls?

Thanks in advance.

1 Accepted Solution

Accepted Solutions

paolo bevilacqua
Hall of Fame Master Hall of Fame Master
Hall of Fame Master

Yes, that is called carrier-based routing and is a bit complicated to configure. See:

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t11/feature/guide/ftgwrepg.html

Note, only a portion of the above document is applicable to your case.

Hope this helps, please rate post if it does!

View solution in original post

2 Replies 2

paolo bevilacqua
Hall of Fame Master Hall of Fame Master
Hall of Fame Master

Yes, that is called carrier-based routing and is a bit complicated to configure. See:

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t11/feature/guide/ftgwrepg.html

Note, only a portion of the above document is applicable to your case.

Hope this helps, please rate post if it does!

Hi Paolo,

This looks like the document I am looking for.

Thanks a lot.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Recognize Your Peers