[cisco-voip] Troubleshooting a shared line

[Mike King]

We're running 7.1.3.10000-11, and I had a user call in with the following
sceneriao.

They have a line extension 2920, that is shared on 4 phones.   2 7941's, 1
7961, and 1 VG224 port (They plug a cordless phone into it)

Recently (for the last month or so) the extension will show in use "the
light goes red", but none of them would be on the phone. They also said when
the light is red, nobody else can start a call on that extension.  The way
they are fixing it has me puzzled.

They say the unplug the 7961 (which has the light being red, so it's not the
active call) and plug it back in.  That will make the light clear, and they
can use the phones for a while, till the light stays on again.

What I'm looking for, is there a way to trace a DN?  I.E. show which device
has the line siezed?  I used to be able to do something like that with my
older PBX (It would print out all the phones that had an extension, and what
the various calls states the lines were in)

Of course I'll have to wait for it to happen again, and I have a snarky
suspicion they aren't really hanging up that cordless phone, even though
they are swearing it's off, but I'd like to be able to figure out what
"device" has the line seized.

Mike
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