Connect Cisco CallManager to external SIP provider

[asim.mz99]

I need to connect my CUCM 5.1 with sip proxy on telco side.IP phones
will connect to CUCM.

The SIP server provide 90 lines with real numbers


Following is the scenario.

Cisco IP phones----------CUCM-------WAN connection to
telco---------SIP proxy server.

Can anybody explain me how this will work, what will be the
configurations and if CUCM has the capability to control the calls
between IP phones and SIP server.

[mdawar]

Hi Asim

It is recommended to use CUBE (IP-IP gateway)

Look following url for configuration.

http://www.cisco.com/en/US/products/sw/voicesw/ps5640/products_configuration_example09186a00808ead0f.shtml

Regards..

Mahesh Dawar

www.cisco.com/go/pdihelpdesk

[asim.mz99]

Dear Mahesh,

Thanks for you reply.


Is it necessary to use CUBE or just a best practice. Can i achieve all
the requirements without CUBE.

Best regards,

Asim Zafar