Bell System Practices TOUCH-A-MATIC 2872A1M Identification, Installation, Connections, Operation, And Maintenance

BELL SYSTEM PRACTICES SECTION 503-603-101
AT&TCo Standard Issue 5, October 1980
2872A1M OR 2872A2M "TOUCH-A-MATIC ®'' TELEPHONE SET
IDENTIFICATION, INSTALLATION, CONNECTIONS,
OPERATION, AND MAINTENANCE
CONTENTS PAGE CONTENTS PAGE
A. Location of Components .... 13
1. GENERAL ........... 2
B. Mounting Cord ....... 14
2. IDENTIFICATION ......... 3
C. Network Terminals ...... 15
A. Design Features ....... 3
D. Power Supply (PSB) Terminals . . 15
B. Optional Features ...... 3
E. Line Key Removal ...... 18
C. Ordering Guide ....... 4
F. Faceplate Removal ...... 18
D. Operating Features ...... 6
G. Handset Cradle Removal .... 18
3. INSTALLATION ......... 7
H. Housing Removal ....... 18
STANDARD INSTALLATION ..... 7
4. CONNECTIONS ......... 19
Installation Check Procedure . . . 8
5. OPERAI_ION .......... 19
OPTIONAL APPARATUSINSTALLATION . 10
A. Record A Number Into Memory . 19
A. D-180492 Kit of Parts (With
Speakerphone) ........ 10 B. Change A Number In Memory . . 20
B. D-180493 Kit of Parts (Dial Tone C. Delete A Number From Memory . 20
Detectorand One-Touch Calling Switch)
............. 10 D. Automatically Dial A Number From
Memory .......... 20
C. D-180494 Kit of Parts (2/4-Wire
Service) .......... 11 E. LAST NUMBER DIALED Feature . . 20
D. D-180818 Kit of Parts (Record Disable F. End-to-End Signaling ..... 21
and Dial Intermix Features) . . . 11
6. MAINTENANCE ......... 21
E. Single Line Service ...... 13
• A. Trouble Analysis ....... 21
F. Head Telephone Set ..... 13
B. Battery .......... 22
COMPONENT LOCATION AND ACCESS
INFORMATION ......... 13 C. Memory .......... 22
NOTICE
Not for use or disclosure outside the
Bell System except under written agreement
Printed in U.S.A. Page 1