User guide

SPECIFICATIONS 279
Analog Extension Specifications
Telephone Line Specifications
Dimensions
Weight
Connector type RJ-11, 2-pin
Trunk type Loop start
Interface impedance Either 600 Ω, 900 Ω, TBR21, BT complex, AU complex or ZA
complex, depending on region.
Loop range 0–600 Ω
Recall or Flash supported Yes
On-hook voltage 35 V
Off-hook loop
voltage source
35 V
Off-hook loop current 23 mA to 40 mA
Dial tone level -2.4 dBm
Ringing voltage 90 V RMS
Ringing frequency 20 Hz or 25 Hz (depending on region) – True sine wave
Total ringing load 5 REN
Connector type RJ-11, 2-pin
Trunk type Loop start
Interface impedance Configurable, 600 Ω, 600 complex, 900 Ω, 900 complex
Ringing impedance 3,900 Ω
Ringing sensitivity 45 V RMS @ 20 Hz or 25 Hz (depending on region)
REN 0.7 B
Longitudinal balance 69 dB
Signal level -10 dB
Distinctive ring supported Yes
Caller ID support FSK, all lines
Metric (mm) 51.6 x 203.2 x 213.4
Imperial (inches) 2.03 x 8.0 x 8.4
240vs 244vs 248vs 280vs 284vs 288vs
Metric (kg) 0.65 0.67 0.67 0.72 0.74 0.74
Imperial (lbs) 1.43 1.46 1.46 1.58 1.62 1.62
480vs 484vs 488vs 840vs 844vs 848vs
Metric (kg) 0.79 0.81 0.81 0.89 0.91 0.91
Imperial (lbs) 1.74 1.77 1.77 1.96 1.99 1.99