> all users are supposed to register at the B2BUA. > now A calling B. > and B is registered, but A isn't > so wot happens at the B2BUA, when A tries to call B? > duz the B2BUA send a Forbidden, or it registers A and > then fwds the call to B??
Since it is a "service" at the B2BUA, it basically can do whatever it wishes. Some allow the INVITE to continue. Some ignore the INVITE. Some return 403 after potentially playing a treatment first. I am not aware of B2BUAs attempting to treat the INVITE's Contact as a registered location; however it wouldn't surprise me. Note that such functionality has not been standardized within the IETF SIP working group. And thus, some would likely call it a bug instead of an implied registration service. > if B2BUA registers A, wot is the expiry time, n other details? The "expiry time, n other details" are the reasons why it would likely never be standardized. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
