1
Getting started
Introduction
This AT&T Small Business System is expandable to a 16-extension 
telephone system. The 1040 telephone is compatible with the 1070 and 
1080 telephones. For details, see the installation guide. This system is not 
compatible with any other AT&T 4-line small business telephones, except for 
the 1070 and 1080 telephones.
The 1040 telephone is hearing-aid compatible and can be connected to 
four incoming telephone lines. This telephone features a speakerphone for 
handsfree use, and a headset jack compatible with most two-band 2.5mm 
headsets (sold separately). There are two additional ports, known as AUX jacks 
or data ports, available for connecting the telephone to another device such 
as a fax machine or modem.
The 1040 enables paging, intercom, and call transfers between system 
telephones and is capable of connecting three parties on the same 
conference call.
This telephone also features a 32-number one- and two-touch memory 
buttons for faster dialing.
If there is a 1080 telephone in your system that is an auto attendant, it may 
record messages for your set. 
The 1040 telephone is compatible with Centrex service. Centrex is a special 
subscriber service that might be available from your local telephone company 
for a fee. If you subscribe to Centrex service, refer to the Centrex operation 
section (page 47).
This user's manual contains detailed instructions for using your AT&T Small 
Business System 1040 telephone. Please read this manual before using this 
1040 telephone.