974CIB_06 4/7/06 3:33 PM Page 90

In case of difficulty

Telephone operation

Problem

Solution

LINE lights remain

• Make sure the phone is programmed

on when no line is

for that line to be absent. (See Turn

connected.

line usage on or off for each line

 

on page 31.)

 

• Make sure that your line groups are

 

programmed properly. (See Assign the

 

line group for this phone on page 39.)

 

• Disconnect all other devices (fax, modem,

 

credit card reader, etc.) from any lines

 

connected to your phone. These devices

 

can interfere with the telephone’s data links.

 

• Make sure the total length of telephone

 

wiring used in your phone system is less

 

than 600 feet as it may cause interference

 

with the advanced features of this telephone.

 

• If you are a DSL service subscriber, please

 

see DSL users beginning on page 4 for

 

details.

 

 

Problem

Solution

Tone signals do

Tone signaling does not work during

not activate a

conference calls.

remote device.

 

 

 

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Image 93
AT&T 974 user manual Line lights remain, On when no line is, Connected Line usage on or off for each line