Avaya 3910 사용자 가이드

Possible Cause 1:  The switchhook on the standard phone is accidentally pressed and
released, causing a call to ring back.

What to do:  Always replace the handset carefully. If the problem is not solved, go to
Possible Cause 2.

Possible Cause 2: Automatic Line Selection is programmed incorrectly.

What to do: If one of the phones involved is a standard single-line rotary or touch-tone
telephone, set its Automatic Line Selection  to intercom first. If the problem is not solved,
call the AT&T Helpline.*

Possible Cause 1: The standard phone is part of a combination extension that also
includes a system phone with Background Music on.

What to do: Check to see if the system phone has Background Music  on, because a
standard phone’s message waiting light will not light if Background Music is on at the
system phone.

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If Background Music is on, turn it off. If the standard phone’s message waiting light
lights properly, the problem is solved.

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If Background Music is not on, go to Possible Cause 2.

Possible Cause 2:  The standard phone’s message waiting light is not compatible with the
system.

What to do: See “Standard Telephones” in Chapter 1 for a list of supported standard
phones with message waiting lights and check with your local AT&T Authorized Dealer to
find out if there are others.

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If the phone is not supported, you can use it without message waiting capability.

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If the phone is supported, go to Possible Cause 3.

Possible Cause 3:  The standard phone is not connected to the proper hardware.

What to do: Make sure the phone is connected to an R3.1 206 module and the control unit
is equipped with an R3.1 processor module. If the problem is not solved, call the AT&T
Helpline.*

*

In the continental U.S., help is available at 1 800 628-2888. Outside the continental U.S., call your local

AT&T Authorized Dealer.

Troubleshooting