Function:

4x Telephone (RJ11 port) 

1x Bidirectional Audio (RCA port)

2 x 10/100Mbps Ethernet (RJ45 port)

FC optical interface, S/M 0~20Km,M/M:0~500m 

Features:

1. Universal for Both Fiber Types: Same media converters can supports Single-mode fiber for a long distance up to 20 km(12miles) and Multimode fiber for a distance up to 500m(0.31miles).

2. Extend your Phones and Network: 4 Independent telephone lines +2 Fast shared Ethernet (10/100 Mbit/s) port + 1 Bidirectional audio over same Single mode or Multimode fiber cable

3. Simple to Install,Plug and Play,No setup or configuration needed, FC connector for fiber optical port, RJ-11 connector for telephone ports and RJ-45 for Ethernet

4. No Delay Transmission and Protocol Support: Unlike VoIP products - these converters transmit signals directly over fiber cables, thus offering NO DELAYS, plus support for fax & legacy applications that is not supported by VoIP lines

Audio Specification:

1. Audio: 1 channel bidirectional (1 in, 1 out)

2. Interface terminal: RCA male connector (Industrial terminals optional)

3. Audio input / output impedance: 600 ohms (balanced / unbalanced)

4. Audio Input / Output voltage: 0 ~ 2Vp-p (peak - peak)

5. Audio Bandwidth: 20MHz ~ 20KHz

6. Sampling rate: 48.6K

7. Nonlinear distortion factor: ≤1%

8. Audio SNR (weighted): S / N≥85dB

<b>Telephone specifications:</b><br>

1.Voice coding: PCM coding, 64Kbps per voice<br>
2.Crosstalk attenuation: ≥65dB<br>
3.Balanced noise: ≤63.7dBmop<br>
4.Insertion loss: -3 ± 0.75dB<br>
5.Frequency characteristics: 300 to 3400 Hz (-0.6 to +3 dB) <br>
6.Relay port (FXO): connected to the switch<br>
7.Two-wire AC input impedance: 200+680//0.1 Ω (three components)<br> 
8.Ringing voltage: 35 ~ 150V<br>
9.Ringing frequency: 17~60HZ<br>
10.Return loss: 20 db<br>
11.User Interface (FXS): Connect to the user's telephone<br>
12.Two-wire AC input impedance: 200+680//0.1 Ω (three components)<br> 
13.User line loop resistance: less than 1KΩ (including phone) <br>
14.Ringing voltage peak-to-peak value: 110~150V<br>
15.Ringing frequency: 22~28HZ<br>
16.Feed voltage: 28V<br>
17.Feed current: 20~50mA; <br>
18.Return loss: 20 db<br>
19.Bell flow: AC90 plus or minus 15V<br><br>

<b>Ethernet specifications: </b><br>
1. Rate: 10M/100Mbps, full duplex, half duplex fully adaptive<br>

2. Two RJ45 Ethernet ports share one Ethernet (Not independent).
3. Protocol: Support IEEE 802.3, IEEE 802.1Q (VLAN)<br> 
4. Physical interface: RJ45, support AUTO-MDIX (cross line straight line adaptive) <br><br>

Working voltage:

1. Power input: AC100~240V ,DC5V/2A

2. Power adapter: US/EU/UK/AU optional

Package:

1. 1x Transmitter

2. 1x Receiver

3. 2x Power supply adapters

4. 1x User manual