Lucent Technologies 555-670-116 manual MERLIN LEGEND Communications System Release, Issue, April

MERLIN LEGEND Communications System Release 7.0	Issue 1
Pocket Reference 555-670-116	April 1999
Ordering Codes	71

Specifications

Highlights: 68EC020 processor at 16 MHz, built-in 1200/2400-bps modem; built-in diagnostics; Hybrid/PBX, Key, or Behind Switch mode option; 1.5 MB RAM backup for 4 days; PCMCIA interface

Ports: 3 RS-232-C ports—1 for debugging (plugged to prevent access), one for SMDR, and 1 for system administration

Power input: 117 VAC

Power output: +5 VDC (10 A), -5 VDC (2.50 A), -48 VDC (2.05 A)

Capacity: 54 unit loads

Capacity: 8 analog extension jacks

Signaling: Analog multiline telephone protocol (40 kbps)

Loop range: 1000 feet (305 m), in-building or in-range out-of-building (with analog IROB protectors) only

Capacity: 8 digital extension jacks, each with 1 or 2 extensions (each extension is assigned an individual extension number)

Signaling: BRI S/T protocol (two 64-kbps B channels, one 16-kbps D channel) on a passive bus

Power: 48 VDC phantom power to telephone, 48 VDC over a separate pair (7–8) to an operator console with a DSS

Loop range: 3000 feet (914 m), in-building or in-range out-of-building (with MLX IROB protectors) service only

Capacity: 8 T/R extensions on 2-way voice transmission path with support for telephones with message waiting lights, 2 TTRs

Ringing current: 75-Vrms, 20-Hz trapezoidal ringing superimposed on -48 VDC.

REN: ≤ 1.0 per port

Disconnect signal: 900 ms (T/R short for analog modem, G3 fax, etc.)

Switchhook flash detection: 300–1200 ms

Loop resistance: Serves 2-wire loops to 1300 ohms, including extensions

dB loss1: 3dB (factory setting), 0dB if all calls are to another OPT station.

1If one OPT station calls another OPT station, the loss values of the two OPT stations are added resulting in transmission levels that are too low.008 OPT modules (517D28) may be hardware configured to 0dB loss, however this should only be done if all or the majority of calls from the OPT stations are to other OPT stations. Setting the loss value to 0dB violates EIA-464-A-1 specifications. Contact Tier 4 before modifying the loss value settings of 008 OPT modules.