Overview: This series of equipment is developed by our company special vlsi PDH optical fiber transmission on the basis of the development of point-to-point optical transmission equipment. This product is a 19 inch 1 U rack installation, 64channel voice，4channel E1 interface, The application is very flexible. Have perfect alarm function, the machine work stable and reliable, low power consumption, high integration, small volume. Features: Based on proprietary integrated circuit; 1U19-inch rack-mount; 1-60 channels of voice access, supports Caller ID and reverse polarity billing functions; Support Telephone Number mutual function of each site; FXO and FXS voice ports support port, FXO port and docking PBX, FXS port is connected to the user's phone; E1 interface complies with G.703 recommends using digital clock recovery and smooth phase-locked technology; Can detect when the optical signal is lost for the end device powered down or fiber barrier, and through the LED indicates alarm; With this end in view job status display function remote device; Provide command remote loopback interface, easy to line maintenance; Unrepeated transmission distance of up to 2 to 120 km; Multiple power mode options: AC220V, DC-48V / DC24V, etc; DC-48V / DC24V power supply with automatic polarity detection function, when installed without distinction between positive and negative; Telephone interface with lightning protection, lightning reached IEC61000-4-5 Short circuit current wave 8 / 20μs,open-peak output voltage 6KV 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: 120Km Transmission distance: 120Km @ 9 / 125um single mode fiber, attenuation (0.35dbm/km) Wave Length: 1310nm Transmitting power: 2dBm (Min) ~-1dBm (Max) Receiver sensitivity: -32dBm (Min) Link budget: 24dBm *E1 Interface   Interface Standard: comply with protocol G.703;  Interface Rate:    n*64Kbps±50ppm;  Interface Code: HDB3;  E1 Impedance: 75Ω (unbalance), 120Ω (balance);  Jitter tolerance: In accord with protocol G.742 and G.823  Allowed Attenuation:     0~6dBm *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) Specifications: Model JHA-PCO/S64E4F4C1 Functional Description 64 * telephone，4E1，4*100 Mbps Ethernet， Power Power supply: AC180V ~ 260V；DC –48V；DC +24V Power consumption: ≤10W Dimension Product Size:   485X200X45mm(WXDXH) 19 1U Weight 2.4KG