The basic answer to your question is "yes". In general, in any dialog or usage, if a UA decides that it is terminated, for any reason than a message from the remote UA that states that the dialog/usage is termianted, the UA should send an explicit termiantion message.
In this case, if a UA receives a 408 response to an OPTIONS and decides that it must terminate the dialog, since it does not know that the remote UA knows that the dialog has been terminated, it should send a BYE. Of course, there is no guarantee that the remote UA will see the BYE. Of course, the CDRs at the two UAs will likely be different, but in the face of network outages, the two UAs will not always agree on the state of the dialog. Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
