user manual

DEES AUTOMATIC
GROUND START UNIT
ELECTRA MARK11
ETI NUMBER: MK-014 DATE: 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
2.1 COI-E/EB ETU
2.2 SLI-EB ETU
2.3 DEES Automatic Ground Start Unit (Model 155 mk2).
DEES Communications Engineering, Inc.
4130 148th Ave. Northeast
Redmond, WA 98052
l-800-654-5604
2.4 24 AWG one pair wire.
2.5 ETE-1-2 Telephone or standard 2500 set.
2.6 Modular line cord (1) with RJl 1 connectors.
2.7 Modular Jack.
3. OPERATlON
3.1
3.2
There are no special operating procedures for the DEES 155 Mk2 to work. When the Electra Mark II is
operating, the SLT operates normally.
During 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
4.1 If an SLT port is not already available, insert SLI-EB ETU into an available interface slot.
4.2 Connect 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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