design a sip proxy server

we need to design:

A Sip / H323 proxy server that has the features incluing call forwarding, call waiting, voice mail and conference.

the system should work in a prepaid and post piad mode.

you may use the open sources like Aserisk or make write your own code.

Platform can be Microsoft or Linux.

we need to handle a few hundered simultanous calls.


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About the Employer:
( 0 reviews ) north york, Canada

Projektin tunnus: #38746