-------I looked at the server logs for the phone call missed by XXXX. They indicate that the call came in at 15:32:25, and was routed to her telephone at 15:32:32. This timed out after about 25 seconds as it should if unanswered, and was sent to voicemail at 15:32:58.
I called BBBBBB and asked her to check the phone display. She told me that the phone logged an unanswered call at 15:32:32, precisely in accordance with the server log.
This leaves two possible conjectures:
* The telephone, for whatever reason, did not ring in response to
the incoming call signal which it obviously received.
* The telephone ringer was not audible or noticeable to XXXX for
some other reason.
For the first possibility, I can think of three circumstances that would
cause this:
* If the handset is slightly ajar, i.e., off-hook, the phone will
make no sound, but log the call. Upon receipt of the message
waiting notification, it will start blinking. Eventually, the
phone reverts to on-hook status by itself even if the handset is
still ajar.
* If the alert code for silent ring is set, the line annunciator
will flash silently to indicate the call coming in.
* If the phone is malfunctioning anything can happen.
There is no indication that silent ring alert was set, nor is there any
current configuration setting that should cause this. That leaves three
bullet points for us to consider. I can follow up with one:
I will research this as thoroughly as I can to see if there are any reports of malfunctions by Polycom IP330 phones that conform to this behavior, or if there are any other possible explanations for the events that I've overlooked.
If you would like to follow up in any other way, let me know what I can do to help.
smime.p7s
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