[asterisk-users] How to check if a SIP phone is forwarded without ringing it ?

[Olivier]

Hi,

I feel I've read a thread about this previously but I couldn't find it.

Is there way for an Asterisk server to check if a sip phone is forwarded
without bothering phone's user ?
I was thinking of some Alert-Info option that would let the phone reply with
a 302 Moved Temporarily or 182 Queued message and not let the phone ring or
display anything on its screen.

So that, you could just cancel this call to be able to tell if an extension
is forwarded without bothering users.

Regards
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