> Is it possible to block a uac from putting a call > on hold without tearing down the original call?
You can reject a request. However that doesn't really prevent the user from placing the call on hold (i.e. quit sending and presenting media). And it doesn't prevent the user from indicating hold within a response. And it doesn't guarantee that the user (and the device) is willing or able to allow the call to continue if the media change is rejected. > For example, as a proxy, can I reject the Invite > (hold) with a 488 Not Acceptable Here and not tear > down the original call? See above. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
