Can Asterisk act as a SIP auto attendant

BACKGROUND
We run a call center using a product called Vertical Televantage.  We cannot expand on our current software version (because Intel HMP 1.1 licenses are no longer available -- long story).  Upgrading to the newest version is very expensive ($6-7k) and we don't need any new features.

The primary reason we are running out of HMP licenses is because we provide "cloud" auto-attendants for a number of customers.  Calls into their numbers are routed to our VOIP server using SIP.  We provide the auto attendant and, when a call is transferred back to their location, it takes up two SIP trunks (inbound and outbound), using up license resources.

QUESTION
Can we setup an asterisk server that would sit between our Televantage server and the network SIP services and perform the auto-attendant function?  This would mean registering with the sip service(s) -- which i know it can do, recognizing inbound calls based on DID, providing a voice greeting with options, and either (1) transferring to an outside line via sip or (2) transferring to our Televantage servier -- also via sip
w5golfAsked:
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jfaubiontxConnect With a Mentor Commented:
I can't see any reason why it can't. This pretty straight forward stuff. Accept inbound call, route to IVR based on DID, take route out based on selection in IVR. Depending on your comfort level with asterisk, you might consider adding FreePBX to make the IVR programming a bit simpler.
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