AT&T MERLIN LEGEND System Reference Manual page 30

System Overview
Adapters
Applications
Adapters enable the connection of equipment or, in the case of a channel
service unit (CSU), of Digital Signal 1 (DS1) facilities to the control unit. Some
adapters oonnect directly to the control unit (system adapters) while others
connect to telephones (telephone adapters):
System Adapters
ESF T1 CSU
551 T1 L1 CSU
Universal Paging Access Module (UPAM)
Telephone Adapters
Multi-Function Module (MFM) for MLX telephones
General Purpose Adapter (GPA) for analog multiline telephones
ISDN 7500B
Data Module
directly to the control unit or to an MLX telephone (for simultaneous voice
and data transmission)
modem for connecting digital equipment (such as a personal computer)
to a tip/ring (T/R) interface
Supplemental Alert Adapter (SAA) for connecting an alert (such as a horn
or strobe) to an analog multiline telephone
Applications for the MERLIN LEGEND Communications System consist of
software and/or hardware that add functions to the system:
Call Accounting System (CAS)
Call Accounting Terminal (CAT)
Call Management System (CMS)
Integrated Solution II (IS II)
AUDIX Voice Power — IS II
Integrated Voice Power Automated Attendant
Call Accounting System — IS II
System Programming and Maintenance — IS II
MERLIN MAIL™ Voice Messaging System
MERLIN® Attendant
System Programming and Maintenance (SPM)
See Chapter 3, "System Applications," for descriptions.
for connecting digital data equipment either
Components 1-3