Whats the difference between SIP UA and SIP Account

5 pts.
Tags:
Multiplexers
SIP
SIP UA
I'm registering my SIP UA (sipua1@192.168.1.2) with a proxy (asterisk). Asterisk has dial plans and when a call comes into one of the numbers it is forwarded to my UA as 1234@192.168.1.2. My application is an IVR that is supposed to handle multiple numbers like (1234, 4321 etc.). The IT guys insist that I pick up the call because they say that a SIP UA can have multiple accounts (they are the ones who gave me the sipua1 account credentials). I on the other hand persist that its not supposed to come to me because I didn't register with these URI. I'm confused now, because for one, I can not look up any text that explains the difference between a SIP UA and an Account. Plus I don't know what the standard way is to handle such a situation. It would be easy for me to pick up the call, but I can easily have two UA's and then the situation would become more drastic, because then how would I tell which UA's supposed to handle it. Any insight would be great.

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SIP User Agents (UAs) are the end-user devices, used to create and manage a SIP session. Entities at VoIP endpoints capable of initiating and answering calls between peers, for example SIP phones and ATAs.

When you register to Asterisk, you do not say “him” what numbers you are going to handle. You just register to be able to communicate with him.

I think the problem is in the Asterisk dial plan (extensions.conf file), and we would need to have a look at it in order to figure out why these calls are being forwarded to your UA.

When you go for the SIP Account, the account is your register entry along with different contacts (different UA or same user agent having different alias). Might be the dial plan having the mapping of your sipua1 to 1234.

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