User Manual

VoiceXtender Modem Installer’s Guide
Specifications
A-2 Rev. A - 8/97
General Specifications
Table A-1
General Specifications
General
Operates as a cordless phone or as an intercom.
2-wire loop start signaling
Cordless phone: FXO (Interfacing phone), FXS (Interfacing line)
(see Tables A-2 and A-3.)
Intercom: Both units set FXO (Interfacing phone)
(see Table A-2.)
Operates with standard DTMF (EIA-470) phones
600 Ohm termination impedance, tolerance ± 5%
End to End SINAD of 30-36 dB over the voice band (200-3400 Hz)
End to End Audio Loss/Gain: Adjustable to maximum of + 3 dB
Audio muting during link fades
DTMF Address Signaling (Dial Pulse optional)
Meets FCC Part 68 Compliance
Table A-2
FXO Specifications
FXO (Interfacing Phone) Signaling
Battery feed circuitry maintains loop current of 16 mA into maximum of 1.0 kilohm Loop
resistance (this includes phone load). Maximum Feed Current 100 mA
Rings maximum of 5 REN-B Loads.
Ring signal is a filtered squarewave with nominal voltage 86Vp and nominal frequency 20
Hz.
Ring cadence of 2 sec ON and 4 sec OFF
Ring tripping in less than 200 msec