Toshiba CTX28 manual Series Telephone Option PCBs, 11-3, Telephone Subassembly Upgrades

Station Apparatus

3000-series Telephone Option PCBs

CAUTION! When installing the station cable, do not run the cables parallel if they are within three feet of an AC power line. AC power lines should be crossed at right (90°) angles only. In particular, avoid running station wire pairs near devices that generate electrical noise, such as neon or fluorescent light fixtures.

CAUTION! Do not use cleansers that contain benzene, paint thinner, alcohol or other solvents on the telephone's rubber feet. The color of the rubber may transfer to the desk or mounting surface.

Digital telephones connect to the digital telephone ports via the MDF with standard twisted-pair jacketed telephone cable. If using 24 AWG cable, single-pair wiring is sufficient in most cases for digital telephones to operate effectively at up to 1000 feet from the system.

Digital telephones that are equipped with ADMs should have two-pair (or external power) to function effectively at this distance. This also applies to digital telephones supported by systems that must operate with battery reserve power (see Chapter 4 – Strata CTX670 Installation for more information).

To accommodate the digital telephone line cord, the cable should be terminated in a modular station connector block (RJ11) at the station location. The standard single-pair, modular digital telephone cord that is sent with the telephone is 7 ft. (the maximum allowed is 25 ft.).

Notes

●Digital telephone cable runs must not have cable splits (single or double), cable bridges (of any length), or high resistance or faulty cable splices.

3000-series Telephone Option PCBs

Digital telephones can be upgraded with option PCBs to add a number of features. Each of these upgrades shares a circuit with the telephone that it is connected to and is not considered a station. See Table 11-2for more information.

Table 11-2 3000 Telephone Subassembly Upgrades
				Station
	Subassembly	No. per	Function
		Phone
				Apparatus
	BVSU1		Speaker Off-hook Call Announce (OCA): Provides interface for digital
		1	telephone to receive Speaker OCA. Not required for Handset/Headset
			OCA.
	BHEU or		Headset and external ringer telephone interface: Can be installed with
		1	BVSU, BPCI or DADM. (See “Telephone Headset (BHEU) Upgrade” on
	HHEU
			page 11-7for installation instructions.)
	BPCI	1	TAPI PC application and data calling interfaces.
	DADM30201	1 or 2	Add-on Module (ADM): Provides telephone with 20 (or 40 with two ADMs)
			additional feature buttons.

1. Only one of these options is allowed per telephone: BVSU, BPCI or DADM.

Strata CTX I&M 06/04 11-3