Specifications

Circuit packs, channel service units, and power supplies
242 Hardware Description and Reference for Avaya Communication Manager
The TN793CP provides:
● Touchtone or rotary dialing
● Rotary digit 1 recall
● Ground-key recall
● Programmable flash timing
● Selectable ringing patterns
● On premises LED and neon message waiting
● Caller ID with Call Waiting
● Secondary lightning protection
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CAUTION:
CAUTION: The TN793CP does not support the telephones (used primarily in France) that
use 50 Hz balanced ringing.
The TN793CP supports on-premises (in-building) wiring. The TN793CP circuit pack supports
off-premises wiring with either DTMF or rotary dialing, but LED or neon message waiting
indicators are not supported off-premises.
The TN793CP circuit pack, along with a TN755B neon power circuit pack supports on-premise
telephones that are equipped with neon message waiting indicators. The TN793CP supports
three ringer loads. Only one telephone can have an LED or neon message waiting indicator. A
maximum of twelve ports can be rung simultaneously. To achieve this maximum, the system
uses four ports from the set of ports numbered one through eight, four ports from the set of ports
numbered 9 through 16, and four ports from the set of ports numbered 17 through 24.
The TN793CP circuit pack supports A- and µ-law companding and administrable timers. The
TN793 circuit pack supports queue warning level lights. These lights are associated with the
direct department calling (DDC) and the uniform call distribution (UCD) features, recorded
announcements that are associated with the Intercept Treatment feature, and PagePac paging
system for the Loudspeaker Paging feature. Additional support is provided for external alerting
devices. These devices are associated with the Trunk Access from Any Station (TAAS) feature,
neon message waiting indicators, and modems. The TN793CP provides -48 VDC current in the
off-hook state. Ringing voltage is -90 VDC.
The TN793CP supports DTMF sending levels that are appropriate for Avaya Interactive
Response.
The TN793CP circuit pack’s multinational support is identical to that of the TN2215 circuit pack.
Therefore, the TN793CP allows country-specific transmission selection. The TN793CP is also
impedance and gain selectable for multiple countries. For more information, contact your Avaya
representative.