[Asterisk-Users] asterisk as media server

[Samy Touati]

Hi,

I'm trying to setup asterisk vm, but in the examples and doc, it 
always mention that the phones need to register to asterisk.
Can I have asterisk receive a call from a sip proxy (ser) intended for 
a user who register his phone with ser and not asterisk ?
So far the usage of ser and asterisk is one where the phones register 
to asterisk and if they call out it's going through a UA who is 
asterisk registering to the SIP proxy.
But what if I need the phones to register only with SER ?
Is this feasable ?

Thanks.

Samy.