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MERLIN LEGEND Communications System Release 6.0
System Manager's Guide 555-660-118
3
System Components
Adapters
Adapters
This section describes the adapters that connect adjuncts to the system and to
telephones. System adapters connect directly to the control unit; telephone
adapters connect adjuncts to telephones.
System Adapters
Three system adapters connect directly to the control unit: a channel service unit
(CSU), the Loop-Start Trunk Adapter, and the PagePal™ paging access adapter.
A channel service unit ( CSU ) is the interface between the 100D module and the
Digital Signal 1 (DS1) T1 facility provided by the telephone company.
The Loop-Start Trunk Adapter and PagePal connect loudspeaker paging systems.
The PagePac
Installation and operation of these adapters, as well as planning for them, is
handled by Lucent Technologies.
Telephone Adapters
The adapters described below connect adjuncts to telephones.
Multi-Function Module
The Multi-Function Module (MFM) enables you to connect tip/ring (T/R) or
supplemental alert adjuncts to an MLX telephone. The MFM is a circuit board that
mounts inside the telephone. Adjuncts plug into a modular jack on the MFM. The
MFM is the only T/R adapter used with MLX telephones. You cannot install an
MFM in an MLX-20L telephone that is set up for QCC operation.
!
WARNING:
Only a qualified technician can install or repair an MFM. To eliminate the risk
of electrical shock, do not disassemble the MLX telephone.
T/R adjuncts operate independently of the MLX telephone. If the telephone is in
use, the adjunct can send and receive voice or data calls. An MFM
accommodates the following T/R adjuncts:
Answering machines
Fax machines
Modems
Credit card verification terminals
®
Plus loudspeaker paging systems require no system adapter.
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Issue 1
February 1998
Page 3-34
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