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Appendix G
IPX-1900 Module Card Specifications
IPX-19FO Card Technical Specifications
Signaling Loop Start / DTMF
No. of channels 2
Interface Connectors 2 RJ-11 2-pin modular jacks
AC Impedance Selection
600 Ω /900 Ω / Global Impedance / Sixteen Impedance
for selection.
Receive Frequency
Response
Low –3 dBFS Corner, FILT = 0 , 5 Hz
Low –3 dBFS Corner, FILT = 1, 200 Hz
Return Loss
≥ 25 dB , 300–3.4 kHz, all ac terminations
digital gain/attenuation
adjustment
–16.5 to 13.5 dB
Tranhybrid Balance
≥ 20 dB, 300–3.4 kHz, all ac
terminations
Polarity Reversal Detection Support Battery Reversal Detection
IPX-19FS Card Technical Specifications
Signaling Loop Start / DTMF
No. of channels 2
Interface Connectors 2 RJ-11 2-pin modular jacks
Line Impedance
600 Ω
900 Ω
Return Loss Min 30db, 200 Hz to 3.4 kHz
Gain/Attenuation Digital Programmable from mute~6db
Metallic to Longitudinal
Balance
Min. 40 db, 200 Hz to 3.4 kHz
DC Loop Current Accuracy 29mA nominal
Ring Voltage 44Vrms Nominal
Ringing Tone 16.667Hz, 20Hz /30Hz / 40Hz/ 50Hz / 60Hz
REN 5
Pulse metering 12k/16k hz
Note: The IPX-19SL module card signaling same as IPX-19FO/FS specifications.