The device adopts a special digital multiplex chip, which integrates almost all the digital logic functions in the device, which significantly improves the performance of the product and reduces the cost. The equipment has excellent performance, stable and reliable operation, low power consumption, high integration, small volume and easy installation and maintenance. A single optical fiber can simultaneously transmit 1 ~ 128 telephone signals and 16 100m network signals. Our company has core technology and uses PCM pulse code modulation technology. The voice quality is clear and the call is stable and reliable. Each voice signal has three-level overcurrent, overcurrent and overvoltage protection units, which are widely used in various college networks or public networks such as government units, electric power, public security, military, civil aviation, maritime affairs, mines, highways and so on.
Technical indicators
Optical device index
Module type: single mode (conventional)
Wavelength: 1310nm 1550nm (selected according to equipment function)
Module speed: 155mbps
Transmitted light power: ＞ - 7dB
Emission sensitivity: ＞ - 24dB
Optical port: FC (normal) SC / St / LC (optional)
Bell current voltage
Symbol: VR Min: 30 Max: 120 unit: VRMs remarks: (17-60) Hz
Ringing detection voltage
Minimum value: 35 unit: v
Ringing detection frequency
Min.: 17 max.: 60 unit: Hz
Back loss
Minimum value: 20 typical value: 40 unit: DB
Balance degree
Minimum value: 60 typical value: 70 unit: DB
Common mode rejection ratio
Symbol: CMRR minimum value: 60 typical value: 70 unit: DB
Power rejection ratio
Symbol: PSRR typical value: 30 unit: DB
idle channel noise
Symbol: NC typical value: 75 unit: DB
Telephone physical interface: RJ11
Network indicators
Bandwidth: adaptive 10 / 100M rate
Protocol: ieee802.0 3 10Base-T Ethernet,IEEE802. 3u 100Base-TX/FX Fast Ethernet, IEEE802. 3x Flow control,IEEE802. 1q VLAN,IEEE802. 1p QoS,IEEE802. 1d Spanning Tree
Physical interface: jr45
Operating temperature: - 20 ° C ~ 70 ° C
Storage temperature: - 40 ° C ~ 85 ° C
MTBF: > 100000 hours