Ericsson LBI-39076B system manual GTI & IAM Mounting, GTI Connections, Telephone Line

LBI-39076B INSTALLATION

9. GTI & IAM MOUNTING

The 9th step to install the ELI option, is to mount the standard GTI units, the Master GTI, and optional IAM (if supplied). Be sure that the following items have been completed before mounting:

∙Recorded all software version numbers

∙Installed GTI interface card in Master GTI

∙Set up telephone interface

∙Set DIP switches (GTI units and Master GTI)

The method used to mount GTI units in repeater cabinets is to mount all of the standard GTI units first, followed by the Master GTI. Start by mounting the first standard GTI just above the GETC for the highest numbered radio channel, the next GTI just above the GETC for the next highest numbered radio channel, and so on until all standard GTI units, and then the Master GTI are mounted.

You may use some other method. However, using the method described here assures that the supplied cables will be the correct length and the PCM/Data Bus will be as short as possible. (The PCM/Data Bus must not exceed 120 feet in length).

The 350A1154G1 GTI hardware kit, supplied with each GTI unit, provides a pair of offset brackets to brace the rear of the GTI unit to the back rails of the cabinet.

10. GTI CONNECTIONS

The 10th step to install the ELI option, is to make the connections to the GTI units (including the Master GTI). All of the connections can be made to the connectors on the

Telephone Line

The ELI TELCO Interface module, in the EDACS Interface panel at the top of each repeater cabinet, is used to consolidate the telephone connections for 6 telephone lines from up to 6 GTI units into a single 25-pair IDC telco connector for connection to a Type 66 (or equivalent) punchblock and the telephone company. A second 25-pair IDC telco connector is provided on each module to allow a 25-pair cable to connect this module in tandem with a similar module in an adjacent repeater cabinet.

CAUTION

All telephone lines must come through

protected punchblocks (or equivalent protection) before being connected to this equipment.

For each GTI unit that will be connected to a telephone line, connect a cable from the female 8-pin modular RJ-45 connector on the back of the GTI unit to one of the female 8-pin modular RJ-45 connectors (J1 through J6) on the front of the ELI TELCO interface module in the EDACS Interface Panel at the top of the cabinet (see Figure 29). Use a cable that matches the location of the GTI unit:

∙Use a 44" 19B803829P1 cable when the GTI is located with the top repeater.

∙Use a 60" 19B803829P2 cable when the GTI is located with the middle repeater.

∙Use a 76" 19B803829P3 cable when the GTI is located with the bottom repeater.

rear panel as shown in Figure 28.

Telephone	Power Supply/			PCM/Data			GTI Configurator
Line	Repeater Audio			Bus			RS-232 Port
(J1)		(P1)		(J2)				(J3)
						J3			J4 J5
					PROGRAM
PHONE	POWER/AUDIO		PCM/DATA BUS
Master GTI Connections to Site Controller Computer						To Port 30
						To Port 31

Figure 28 - Connections to GTI

Telephone

Company

Connections

J14	J15
	J1
	J2
	J3	GTI
	J4	Connections
	J5
	J6
	ELI TELCO

Figure 29 - Connections to ELI TELCO Interface Module

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