If you're concerned about a SIP phone being unplugged with a call up, you
can send periodic INVITEs for the current call leg and check for responses.
Also, you could also check for ICMP destination/port unreachable messages
for signaling and media.  

Barry Desborough

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: 22 May 2001 09:50
To: [EMAIL PROTECTED]
Subject: [Sip-implementors] plug/unplug SIP phone ??


Sir,

Which are the means in SIP helping to know if a SIP phone is plugged or 
unplugged ?
Is there also some "keep alive" facilies ?

TIA for your pointers,

Patrick
_______________________________________________
Sip-implementors mailing list
[EMAIL PROTECTED]
http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
_______________________________________________
Sip-implementors mailing list
[EMAIL PROTECTED]
http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors

Reply via email to