Specifications

Control Unit Modules

(continued)

Module

Trunk Type Station Type

012 (T/R)

N/A

Single-line telephone;

MERLIN Attendant; MERLIN MAIL

Voice Messaging System;

T/R adjunct (such as an

answering or fax machine);

analog data device (such as a

modem)

1000 T1 or PRI

N/A

400**

Loop-start Power failure transfer (PFT)

and lTR telephone

400EM

Tie trunk N/A

400 GS/LS/lTR

PFT telephone (button needed for

Loop-start

or ground-

start and

TTR

ground-start PFT telephone)

408*

Loop-start

Analog multiline telephone; Call

System; PFTManagement

telephone

* Although these MERLIN II modules are supported, the 400 GS/LS,

the 408 GS/LS, and the 408 GWLS-MLX are the recommended modules