PCM VOICE MULTIPLEXER FIBER OVER MUX 32 PHONE + FXO/FXS
อุปกรณ์สำหรับแปลงสัญญาณโทรศัพท์ผ่านสายไฟเบอร์ โดยช่องสัญญาณของโทรศัพท์ FXO/FXS มีมาให้ 32 ช่อง  สามารถใช้ได้ 32 หมายเลขพร้อมกันเหมาะสำหรับงานติดตั้งระบบโทรศัพท์ระยะไกลเกินกว่าที่สายทองแดงโทรศัพท์จะสามารถทำงานได้

Features
-Based on self -copyright IC
-Support FXO/FXS, EM2/4 audio, Magnet telephone Interface, FXO port docking with program-controlled switchboard, FXS port connected to the user's telephone;
-1~30channel Voice access supports caller ID feature and reverse polarity billing functions
-Support various sites mutual number allocation function
-The transmission distance is up to 2-120Km without interruption
-telephone interface with lightning protection, lightning reached IEC61000-4-5 Short circuit current wave 8 / 20μs,the peak output voltage 6KV open standards;

Parameters
Fiber
Multi-mode Fiber
50/125um, 62.5/125um,
Maximum transmission distance:5Km @ 62.5 / 125um single mode fiber, attenuation (3dbm/km)
Wave Length:820nm
Transmitting power:-12dBm (Min) ~-9dBm (Max)
Receiver sensitivity:-28dBm (Min)
Link budget:16dBm
Single-mode Fiber
8/125um, 9/125um
Maximum transmission distance:40Km
Transmission distance:40Km @ 9 / 125um single mode fiber, attenuation (0.35dbm/km)
Wave Length:1310nm
Transmitting power:-9dBm (Min) ~-8dBm (Max)
Receiver sensitivity:-27dBm (Min)
Link budget: 18dBm

FXS Phone Interface
Ring voltage:75V
Ring frequency:25HZ
Two-line Impedance:600 Ohm (pick up)
Return loss:40 dB

FXO Switch Interface
Ring detect voltage:35V
Ring detection frequency:17HZ-60HZ    
Two-line Impedance:600 Ohm (pick up)
Return loss:40 dB

EM 2/4 Line
AD:0dB
DA:-3.5dB
Two/Four-line Impedance:600 Ohm
Return loss:20 dB

Working environment
Working temperature:-10°C ~ 50°C
Working Humidity:5%~95 % (no condensation)
Storage temperature:-40°C ~ 80°C
Storage Humidity:5%~95 % (no condensation)