Lucent Technologies MERLIN LEGEND Release 5.0 Pocket Reference page 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: Three RS-232-C ports. One for debugging (plugged to prevent
access), one for SMDR, and one 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 extensions
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 extensions, each with 1 or 2 endpoints (each endpoint
assigned a separate extension number), including these extension types:
CTI link (only one per system)
digital voice only
digital voice with Voice Announce to Busy
digital voice and digital data (via ISDN terminal adapter)
digital voice and analog data
digital data only (ISDN Terminal Adapter)
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: 1000 feet (305 m), in-building or in-range out-of-building (with
MLX IROB protectors) service only
Capacity: 8 T/R extensions
for telephones with message-waiting LEDs; built-in ring generator; 2 TTRs
Notice to Telephone Company: Meets FCC Class C
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 answering machines, G3 fax,
etc.)
Switchhook flash detection: 300–1200 ms
Loop resistance: Serves 2-wire loops to 1300 ohms, including extensions
*
The system recognizes the OPT module as an 012 module having 12
ports. However, the OPT module has only 8 jacks. Therefore, each
installed OPT module decreases the system's capacity by 4 ports.
*
on 2-way voice transmission path with support
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