On Jan 15, 2008 6:11 PM, Scott Lawrence <[EMAIL PROTECTED]> wrote: > Why both instead of just using one or the other?
Actually, we've recently been seeing this a fair bit with "number unavailable" on mobiles here. One paticular mobile carrier has recently got in to the habit of sending ringing indication, followed by a "The person you are calling is currently unavailable. Please try again later, or send a text." as early media. urgh. To work around it, we've started mapping this to a 183 and generating in-band ringing on our PSTN gateways to stop confusing a number of broken SIP UAs. Obviously this particular example is not a long term problem due to it being simply an impedance mismatch between SIP and the PSTN, but that is absolutely no excuse for UA implementers to handle incorrectly what is a perfectly legal scenario!! ~ Theo _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
