[asterisk-users] Is this SDP payload Asterisk created valid?

[Gareth Blades]

On 27/09/13 14:15, Gareth Blades wrote:
>
> Can anyone with a bit more knowledge about the SDP standard tell me if 
> what asterisk is doing is correct?
> Or if it must be a bug with our customers equipment? 

Reading RFC2327 it cais the c= line 'must' be present in all updates 
while 'm=' media lines are optional.
I am therefore inclined to believe that Asterisk is working correctly 
and there is a bug in the customers SIP equipment.
But thats just my personal interpretation from briefly reading the standard.