Accepting calls only from registered devices

[antonio.guirado]

Hello,

I am working to create a SIP trunk in CCME 8.6 (c2851) and an ASTERISK server. Everything is fine but I have a doubt.

For incoming call to CCME (ASTERISK to CCME), Cisco always accepts calls even if ASTERISK server is not registered.

There is no security or authentication. I do not want encryption but I want that Cisco only accepts SIP calls from ASTERISK server.

I suppose that you can use ACL's but my question is "Is there anyway to configure a Cisco CCME that only accept calls from
registered devices?".

Thanks

[Suresh Subramanian · Accepted solution]

May be you can try with IP address trusted list feature which is available from 15.X IOS

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/guide/cmeadm/cmetoll.html

[antonio.guirado]

Hello,

thank you very much. I have jast tried and it works.

Regards.

[Suresh Subramanian]

Hi Antonio, good to hear that everything works as expected. Glad to help.

Cheers

Suresh