Ajay,
Please Refer to Section 10.2.1 of RFC 3261
Setting the Expiration Interval of Contact Addresses
There are two ways in which a client can suggest an expiration interval for a binding: through an Expires
header field or an expires Contact header parameter. The latter allows expiration intervals to be suggested
on a per-binding basis when more than one binding is given in a single REGISTER request, whereas the
former suggests an expiration interval for all Contact header field values that do not contain the expires
parameter.
If neither mechanism for expressing a suggested expiration time is present in a REGISTER, the client is
indicating its desire for the server to choose.
So the example in section 24.1 seems to be correct in regards to section 10.2.1
With regards,
Deepak
*********************** FSS-Private ***********************
_______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
