SCP-04F4O/S30
4 E1+4 100Mbps ports+32 telephones
Provide one optical interface with a speed of 155M;
Provide 4 channels of 10/100M adaptive Ethernet ports, full duplex/half duplex adaptive; Support logical isolation;
Provide 4 E1 service ports, with full digital clock recovery and smooth phase-locked technology;
Provide 1-32 telephone interfaces;
The telephone interface includes overvoltage and lightning protection;
The power supply is DC-48V, DC+24V, DC-24V, AC 220V, etc;
No relay transmission distance greater than 20 kilometers, maximum 120 kilometers
SCP-04F4O/S32 integrated service optical access equipment is a large-scale integrated circuit developed by our company with independent intellectual property rights. It applies
time-division multiplexing technology to mix and encode Ethernet signals, E1 signals, voice signals, etc., and transmit them over a pair of optical fibers. Realize mixed transmission
of 100Mbps Ethernet services, E1 services, voice services, etc. The machine adopts a 19 inch, 1U frame design, with high integration, small size, low power consumption, reliable
operation, and easy installation and use.
Technical indicators
Optical interface
Wavelength: 1310nm (standard model) or 1550nm
Transmission power: ≥ -12dBm
Receiver sensitivity: ≤ -37dBm (BER ≤ 10-11)
Interface mode: FC (standard model) or SC, as well as single fiber
E1 interface
The device has 4 E1 interfaces, which comply with G.703 recommendation
Speed: 2048Kb/s ± 50ppm
Code type: HDB3
Impedance: 75 Ω (unbalanced) or 120 Ω (balanced)
Jitter: in accordance with G.742 and G.823 recommendations
Input port allows attenuation: 0-6dB
E1 connector: BNC connector
Ethernet interface
Support line speed 10Base-T/100Base-T, full duplex/half duplex adaptive
Compliant with IEEE802.3/IEEE802.3u standards
Use standard RJ45 plug
Voice interface and signaling
Exchange side
Off hook impedance:<500 Ω
Hanging impedance:>10K Ω
User side
Loop impedance: ≤ 2000 Ω (including telephone)
Idle circuit voltage ≤ 50V
Loop current: 25mA
Off hook threshold: 8mA
Polarity reversal delay:<50ms
Dialing: Pulse dialing with pulse distortion<5ms
Total distortion of in band audio dialing meets the characteristics of voice interface
Off hook latency:<100ms
Bell flow:
Remote (FXS) Ringstream Generator
Frequency: 25 Hz ± 3 Hz
Amplitude: 75V ± 5Vrms
Bell current delay<50ms
Total output power ≤ 10W (in chassis units)
Local end (FXO) bell current detection
Amplitude range: minimum 38Vrms
Voice interface
Impedance: 600 Ω or three element complex impedance, as shown in the figure
Three element complex impedance
Audio range: 300-3400 Hz
Coding Law: CCITT Recommendation G.711 A Law
Level of 2-wire interface: 0dBr for 2-wire transmission and 3.5dBr for 2-wire reception
Four wire interface level: 0dBr for four wire transmission and 0dBr for four wire reception
Return loss: 300-600 Hz>12dB 600-3400 Hz>15dB
Frequency response: 300-3400 Hz (+0.5, -0.5dB)
Space noise: ≤ -65dBm0p
Gain: -45 dBm0-+3 dBm0 (+0.5, -0.5dB)
Total signal-to-noise ratio: compliant with ITU G.713 template as shown in the figure
The relationship between signal/total distortion and input level for analog (four to four or two to two) channels
2/4-wire interface specification:
Compression ratio: A law in ITU G.711
Impedance: Balanced 600 Ω
Audio range: 300Hz-3400Hz
Return loss: not less than 18Db
power waste
The overall power consumption is less than 35W
work environment
Working temperature: 0-45 ℃
Relative humidity: ≤ 95% (at 25 ℃)
Atmospheric pressure: 70-106Kpa
