[SIPForum-discussion] How could SDP be present in REGISTER method ?

[Євген Крапива]

Hi.

I'm trying to register Nokia N81 Push-to-Talk client application
within my own Registrar.
I've discovered that REGISTER method from PTT client contains SDP
body, and if I send 200 OK reply withoud any SDP (as I do for common
SIP clients), PTT client says "Login failed".

I've not found any information on whether SDP can be present in
REGISTER method and what Registrar must do if it is.

Maybe I have missed something ?

Thanks.