NEC nd-20292 manual 2of6

ET1 NUMBER: MK-012

DATE: DECEMBER 1988

3.7Length of a-pair station cable long enough to reach from the ECR-E ETU card to the RJ-31X modular jack, located near the AEC, model 212 Plus.

4.REFERENCES

4.1AEC’s, model 212 Plus, owner’s manual.

4.2Electra MarkII Installation Service Manual.

5.OPERATION

The first DIT/ANA caller who encounters a busy or no answer condition within a pre- programmed amount of time will receive a prerecorded message from the beginning. This announcement will repeat until the call is answered or abandoned. Subsequent callers may be connected to the Delay Announcer at any time while the message is in progress and may not get the complete message until it repeats again. Therefore, keeping the message short will minimize confusion.

6.PROCEDURE

NOTE

Ensure that antistatic handlin precautions are observed when handling the E 8 R-E ETU.

6.1 Wiring connections to the ECR-E ETU. (Refer to Figure 1)

6.1.1Remove approximately 3 inches of outer insulation from both ends of the 4 conductor cable and strip off + inch of insulation from each of the four wires.

6.1.2	Choose a relay	to be used (4 - 10) for Delay Announce. Use of relay 10 is
	recommended.	Figure 1 shows the use of relay 10.

6.1.3Connect one lead from the 4-conductor cable to the A side of the relay chosen. (Connections for relays 04 - 06 are found on the MDF and connections for relays 07 - 10 are found on the CNl terminal strip on the ECR-E ETU.)

6.1.4Connect a second lead from the 4-conductor cable to the B side of the relay chosen.

6.15Connect a third lead from the 4-conductor cable to the center terminal of an RCA plug.

6.1.6Connect the fourth lead from the 4-conductor cable to the ground side of the RCA plug.

6.1.7Insert the RCA plug into JK3 of the ECR-E ETU.

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