ETV pcm 8 FXO/FXS over fiber optic multiplexer
Main functions and features
1: Provide 1 optical interface
2: Provide 8 telephone lines
3: The telephone interface includes overvoltage and lightning protection modules;
4: Power supply: 220V or 48V power supply
5: Single fiber or dual fiber transmission, normal shipment is single fiber;
6: The optical transmission distance is 20KM, the farthest can transmit 120KM
7:1 U rack-mounted equipment or desktop equipment
1: Optical interface
Wavelength: 1310nm (standard model) or 1550nm
Transmission power: ≥-12dBm
Receiving sensitivity: ≤-30dBm (BER≤10-11)
Interface mode: FC (standard model) or SC, etc.
Transmission mode: dual fiber or single fiber
2: Voice channel interface and signaling
Exchange side
Off-hook impedance: <500Ω
On-hook impedance:> 10KΩ
User side
Loop impedance: ≤2000Ω (including phone)
Idle circuit voltage ≤ 50V
Loop current: 25mA
Off-hook threshold: 8mA
Polarity reversal delay: <50ms
Dial: Pulse dial single pulse distortion <5ms
The total distortion of in-band tone dialing meets the voice interface characteristics
Off-hook delay: <100ms
Ring flow:
Remote (FXS) ring current generator
Frequency: 25 Hz±3 Hz
Amplitude: 75V±5Vrms
Ring current delay <50ms
Total output power ≤ 10W (take the chassis as the unit)
Central office (FXO) ring current detection
Amplitude range: minimum 38Vrms
Voice interface
Impedance: 600Ω or three-element compound impedance
Audio range: 300-3400 Hz
Coding law: CCITT recommends G.711 A law
| Power consumption | <15W |
| Operating temperature | 0~45℃ |
| Relative humidity | ≤95% (at 25℃) |
| Atmospheric pressure | 70~106Kpa |
Beijing yite video technology co. LTD. Founded in 2009, ETV is a high-tech enterprise focusing on the application of digital video technology and communication technology.We specialize in the research and development, product marketing and service of digital video software, multimedia communication, optical fiber communication, network communication products and wireless image transmission technology, and provide professional and integrated solutions for industry users. We apply years of successful experience in the communications industry to multimedia applications, monitoring professional users, and advocate professional one-stop service, digital industrial level, system hd video transmission new concept.
With the deep understanding of user requirements and sustainable development ability, independent research and development of ETV series products include: all cloud terminal multimedia interactive system, digital high-definition video transmission system, high-definition image codec, network Portable decoder, a distributed IP hybrid high-definition optical transmission matrix, integrated business platform, network security management system, and hundreds of varieties. And domestic and foreign manufacturers to cooperate with the hd cameras, monitors and large screen and nearly 100 kinds of front-end products. With our professional services and high quality products, we provide a full range of integrated solutions. It has been applied to thousands of users in nearly 20 industries, such as broadcasting and television system, expressway, urban traffic, public security, petrochemical, coal, water conservancy, electricity, airport and school.
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