NEC nd-20292 manual Electra MARK11, Other Requirements

3.5 One in-line fuse holder and 6 amp. 25QV fuse for each unit installed.

I

3.6One three position barrier block (For one and two unit installation, a barrier block is not necessary).

3.718 - 20 AWG stranded, insulated wire, to run three wires from the barrier block to the wall mounted

power supply. (Do not use single conductor station wire for this application).

3.8Teltone Installation .Manual.

4.OTHER REQUIREMENTS

4.1One single line (SLI) port from the Electra .MarkII system.

4.2One incoming CO line (P&ferably a ground start line. Loop start lines may be used, however, it is

recommended	that the optional call timer be implemented	to prevent service interruptions.	See Step
6.11).

4.3For test purposes only:

4.3.1One loop start CO line.

4.3.2One ETT-1-f 1or equivalent polarity guarded DTMF single line telephone.

4.4When night transfer option is selected:

4.4.1One ETT-1-t ) or equivalent DTMF single line telephone.

‘4.4.2 One CO (CO11 port from the Electra MarkII.

5.SITE REQUIREMENTS

5.1A vertical surface, preferably the Electra l&lark11 MDF, near an available 120 VAC circuit

5.2Ambient room temperature range: 0 - 55°C.

5.3 Relative humidity: up to 85% (non condensing).

6.PROCEDURE

	r?r,	I	ELECTRA MARK11
M-106 UNIT	:
	*
	.
CO LINE	-....a

.

.

.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ;

I

,.....I Night Transfer

(M-106 off)

Figure 1. System Block Diagram

2of6