NEC nd-20292 manual Dees Automatic Ground Start Unit

DEES AUTOMATIC

GROUND START UNIT

ELECTRA MARK11

ETI NUMBER: MK-014DATE: APRIL, 1990

DESCRIPTION

1-~=.

This Engineering Technical Information (ET\) Bulletin describes the steps necessary to connect a DEES Automatic

Ground Start Unit (Model 155 Mk2) to a Single Line Telephone (SLT) on the Electra Markll for operation during a power failure.

PARTS REQUIRED

2.1COI-E/EB ETU

2.2SLI-EB ETU

2.3DEESAutomatic Ground Start Unit (Model 155 mk2).

DEES Communications Engineering, Inc.

4130 148th Ave. Northeast

Redmond, WA 98052

l-800-654-5604

2.424 AWG one pair wire.

2.5ETE-1-2 Telephone or standard 2500 set.

2.6Modular line cord (1) with RJl 1 connectors.

2.7Modular Jack.

3.OPERATlON

3.1There are no special operating procedures for the DEES 155 Mk2 to work. When the Electra Mark II is operating, the SLT operates normally.

3.2During power failure of the Electra Mark II, the ground start trunk that is connected to the DEES 155 Mk2 is automatically switched over to a direct connection with the SLT. The SLT can then originate or receive outside calls.

4.PROCEDURES

4.1If an SLT port is not already available, insert SLI-EB ETU into an available interface slot.

4.2Connect Ground Start Trunk to an available COI-E/EB port on the MDF.

See Figures 1 and 2 for the following procedures.

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