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DEFINITY Made Easy Tools
Issue 2, November 2000
DEFINITY Hardware
TN746B
The TN746/B has 16 ports. Each port supports 1 voice terminal. LED message waiting indicators are not supported off premises. The TN746 does not support neon message waiting indicators. Auxiliary equipment, such as answering machines, modems, and amplifier handsets, is not supported.
The TN746/B supports on-premises (in-building) wiring with either touch-tone or rotary dialing and with or without the LED and neon message waiting indicators. The TN746B supports off-premises wiring (out-of-building only with certified protection equipment) with either DTMF or rotary dialing, but LED or neon message waiting indicators are not supported off-premises.
The TN746/B, along with a TN755B neon power unit per carrier or per single-carrier cabinet, supports voice terminals equipped with neon message waiting indicators (on-premises use only). The TN746/B supports 3 ringer loads, only 1 voice terminal can have an LED or neon message waiting indicator.
The TN746 supports µ-Law companding but not administrable timers. TN746C and later supports A-Law and µ-Law companding and administrable timers. The TN746 supports queue warning level lights associated with the DDC and UCD features, recorded announcements associated with the Intercept Treatment feature, and PagePac paging system for the Loudspeaker Paging feature. Additional support is provided for external alerting devices associated with the TAAS feature, neon message waiting indicators, and modems. Secondary lightning protection is provided on the TN746B only. The TN746B supports up to 8 simultaneous ports ringing.
The TN746B is compatible with the terminal configurations shown in the table below.