Re: Multiple registration using single UA

> If I wanted to register two distinct numbers through 
> a single UA Device say 34111111 and 34111112 through 
> one/single UA Device.  Should I expect the "Call-ID" 
> to be Unique or Identical?

Unique.  I assume that you are not attempting to use rfc6140 or rfc5626.


> How could the SIP Server or Registrar verify that these 
> two numbers are in fact originating from the same Device?

As far as I know, that is outside of the scope of rfc3261 unless you want to make assumptions/deductions concerning some header values (such as Contact or User-Agent).  RFC 6140 may be of interest.

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