[Asterisk-Users] Stupid tricks: preventable?

[alan]

I just experienced something I'd rather not experience again.

Using a SPA-841 SIP phone connected to our Asterisk server, someone
dialed their own extension, answered, and then transferred the call
using the phone's "XFER" soft key. This does a SIP REFER.

Now, the phone has dropped out of the loop, and Asterisk has connected
the two call legs into a loop, as far as I can tell.

I tried a "soft hangup" on each of the channels, but nothing happened.

Is there any way to recover from this, short of an asterisk restart?

Thanks,

Alan Ferrency
pair Networks, Inc.
alan at pair.com