AT&T System 85 manual Lights, Modular Trunk Data Module Mtdm

Modular Trunk Data Module (MTDM)

Self-Test

This switch is located behind the front faceplate. Pressing this button performs the self- test.

LOC LOOP/REM LOOP

This switch is located behind the faceplate. It is used to perform the Local loop test or Remote loop test.

Options

The option switches are located behind the front faceplate. There are two Dual In-line Package switches, one a 10-position, the other a 12-position, located behind the front faceplate. Nineteen of the switches are used to set the options. The other three are spares reserved for future use.

Lights

Power

Data Set Ready

Line Status

Call in Progress

Carrier on

Test in Progress

Check option

Test Result

Send Data

Receive Data

Mounting Options

The MTDM can be configured either in a stand-alone or a multiple mounted version. The stand- alone version is contained in a 70A Data Mounting aluminum housing that is equipped with plastic front and rear covers. A maximum of eight MTDMs may be installed in the 71A Data Mounting.

The stand-alone version can be mounted on a surface or desk top near the associated data equipment. The multiple-mounting carrier unit is normally installed in an auxiliary cabinet.

Power

Both mounting arrangements require power from a 115-volt AC receptacle to power the MTDM.

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