CISCO 3825

[UnivoiceLLC]

I was wondering if there was a way to only allow my sip signaling ip yet the cisco allow media from other ip?  in other words kind of like established related?  I dont want to have to add all my customer media gateways IP just me signaling sip server..

[Daniele Giordano]

If I understand your request, you want use your 3825 as B2B UA to handle all SIP requests.

You can use these commands:

voice service voip

allow-connections sip to sip

and

media flow-through

You can find more info here

http://www.cisco.com/en/US/docs/ios/voice/cube/configuration/guide/vb-gw-sipsip.html

Regards.

[UnivoiceLLC]

Thank for reply just wanted to explain a bit more..  I have a valid ip on this cisco sending calls to it from opensips(media-signaling)  I addded access list and allowed ip or signaling server but noticed calls where very short because the cisco was not allowing media from the cutomer un-known ip.   Will this resolve this issue?

if so I can put access-list rules back because I found a hacker attempting to make international calls over the cisco.

In my cisco2432 I had this option that does not exist in my 3825

voice service voip

ip address trusted list

  ipv4 8.27.109.44

[Daniele Giordano]

The command "ip address trusted list" was added from IOS version 15.1(2)T.

Try to upgrade the 3825 IOS.

Regards.