DigiTech C0408 system manual Line Connections, Station Connections, Cable Clips

IMI 66-083 lnstall-s

LINE CONNECTIONS

The line terminations for the common equipment cabinet are standard modular plug/jack connections. Each modular’jack provides termination for two lines. Modular line jacks 1 and 2 also provide termination for an auxiliary pair in addition to the two outside lines. The outside line termination can be a type 66M-xx connector block or individual 6-position modular jacks. The line cord that is routed between the outside line termination and the common equipment termination should be twisted-pair wiring. Table 3-1 shows the line connection details for all three of the common equipment base units. Figure 3-4 illustrates typical line connections.

Transient voltage spikes, if induced onto CO or CENTREX lines, can travel through the cable and into the common equipment. The telephone company offers basic protection against this condition but it is usually designed to protect the central off ice circuits. While it will also provide some protection to the common equipment, it should not be relied upon for total protection. To help ensure that external overvoltage surges do not damage the system, it is recommended that gas discharge tubes, or similar primary protection devices, be installed and properly grounded on all lines.

The outside line that is initially connected to a particular line port along with all programmed attributes, can be reassigned to a different port by programming action. This feature allows adds, moves, and changes to be made without relocating the line wiring. Refer to Chapter 4, page 4-19 for line to line port re-assignment.

Add-on expansion modules are available to expand line capacity. Refer to Section 3 for complete details.

STATION CONNECTIONS

The system supports the operation of the following digital station types:

•Comdial Digital Multiline Telephone

•Comdial Digital LCD Speakerphone

Connections between the common equipment and the stations are typically via type 66M-xx connector block!; which are cable connected to the common equipmer,t 50-pin male connector. The connector block is, in turn, wired to modular jacks which the stations connect to through the line cord. The maximum distance allowed from the common equipment to the stations is 1000 feet using #24 gauge, twisted-pair cable.

If spare conductors exist in the cables that are run between the 66M-xx connector blocks and the station jacks, it is a good practice to connect them to earth ground. as a preventative measure against radio frequency and/or AC interference.

Only one station should be connected to a station port. Do not bridge two stations to a single modular jack.

Table 3-2 shows the station connection details. Figure 3-5 illustrates typical station connections.

The extension number and all other programmable attributes of a station that are initially assigned to a particular port can be re-assigned to a different port by programming action. This feature allows adds, moves and changes to be made without re-locating the station wiring. Refer to the automatic station relocation programming procedure found on page 4-10 and the station-to-station programming procedure found on page 4-50.

NOTE: The station 10 to station port 10 assignment can nor be relocated.

Add-on expansion modules are available to expand station capacity. Refer to Section 3 for complete details.

CABLE CLIPS

Each cabinet-mounted 50-pin male connector is equipped with a retaining clip. This clip is designed to secure the mated connection once it is made. The clip does this by snapping into a slot on the cable-mounted connector when it is pressed together with the cabinet-mounted connector. This retaining clip must be pulled back slightly to unsnap it before the connectors can be separated.

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