TRENDnet TVP- 221H, VoIP Gateway manual Telephony Line Module Specifications, FXO Ports, FXS Ports

TVP-221H User’s Guide

Telephony Line Module Specifications

FXO Ports

Signaling	Loop start/DTMF
Number of channels	2
Interface connectors	2 RJ-11 2-pin modular jacks
Line impedance	600￿￿900 ￿￿Complex line impedance
Insertion loss	2 dB nominal
Frequency response	300 Hz ~ 3400 Hz +/- 2 dB w.r.t. 1004 Hz
Return loss	￿18 dB
Input level adjustment	-6 dB to +6 dB
Output attenuation	0 dB to 13 dB
Longitudinal balance	￿45 dB
Disconnect detection	Loop current; Customizable tone detection
FXS Ports
Signaling	Loop start/DTMF
Number of channels	2
Interface connectors	2 RJ-11 2-pin modular jacks
Line impedance	600￿￿900 ￿￿Complex line impedance
Insertion loss	2 dB nominal
Frequency response	300 Hz ~ 3400 Hz +/- 2 dB w.r.t. 1004 Hz
Return loss	￿18 dB
Input level adjustment	-6 dB to +6 dB
Output attenuation	0 dB to 13 dB
Longitudinal balance	￿ 45 dB
Loop current	25 mA nominal
Ring voltage	40 Vrms nominal
Ringing tone	16.67 Hz, 20 Hz (default), 25 Hz or 50 Hz
Disconnect detection	Loop current

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