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ETV 4E1 Physical isolation 4Ethernet 16 port PCM multiplexer telephone

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Quick Details

Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability: 1000 Pair/Pairs per Day
Relative humidity: ≤95%(25℃)
Place of Origin: Beijing China
Warranty: 1 Year
Atmospheric pressure: 70~106Kpa
Optical interface wavelength: 1310nm (standard model) or 1550nm
Transmission distance: 20-120km
Model Number: ETV-120H-4E1-4FE
Working temperature: 0~45℃
E1 interface: Meet G.703 recommendation
Brand Name: ETV
Type: Fiber Optic Transceivers
Power consumption: <35W
Product name: PCM multifunctional multiplexer
No. of Fiber: 1.
power supply: DC-48V, DC+24V, DC-24V, AC 220V, etc.;
Packaging Detail: Standard packaging, custom packaging
Beijing Yite Video Technology Co., Ltd.
Manufacturer, Trading Company
Response Rate
On-time delivery rate
US$ 2,000+
R&D staffs
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Product Parameters


Main Feature

1.Provide 1 1.25G optical interface;
2.Provide 4 physical isolation wire-speed 10/100M adaptive Ethernet ports, full duplex/half duplex adaptive;
3.Provide 4 E1 service ports, all-digital clock recovery and smooth phase lock technology;
4.Provide 8 service slots (each card provides four channels of service);
5.The user interface can be plugged into ordinary telephones, magnet telephones, hotline telephones, V35 services, RS232/RS422/RS485 data services, two/four-wire audio interfaces, two/four-wire EM interfaces, and Ethernet services;
6.The power supply is DC-48V, DC+24V, DC-24V, AC 220V, etc.;
7.The non-relay transmission distance is greater than 20 kilometers, and the maximum is 100 kilometers
8.This configuration is the price of 16 phones

technical parameter

1: Optical interface (1.25G)
Wavelength: 1310nm (standard model) or 1550nm
Transmission power: ≥-12dBm
Receiving sensitivity: ≤-30dBm (BER≤10-11)
Interface mode: FC or SC or LC
Transmission mode: dual fiber or single fiber
2: E1 interface
The device has 4 E1 interfaces, which meets G.703 recommendations
Speed: 2048Kb/s ±50ppm
Code type: HDB3
Impedance: 75Ω (unbalanced) or 120Ω (balanced)
Jitter: Comply with G.742 G.823 recommendations
Input port allowable attenuation: 0~6dB
3: Ethernet interface
Support wire speed 10Base-T/100Base-T, full duplex/half duplex self-adaption
Comply with IEEE802.3/IEEE802.3u standard
Use standard RJ45 plug
4: Data interface (including RS232, RS485, RS422 interface)
The data interface rate is 300--19.2Kbit/s baud rate adaptive, DCE mode
5: V.35 interface characteristics
Nominal rate: N*64K/s(N ≤32)
Working mode: DCE, DTE optional
6: 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 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
7: Two/four wire audio interface
Two-wire interface level: Two-wire transmission 0dBr Two-wire receiving -3.5dBr
Four-wire interface level: four-wire send 0dBr four-wire receive 0dBr
Return loss: 300-600 Hz> 12dB 600-3400 Hz> 15dB
Frequency response: 300-3400 Hz (+0.5, -0.5dB)
Air noise: ≤-65dBm0p
Gain: -45 dBm0——+3 dBm0 (+0.5, -0.5dB)
Total signal-to-noise ratio: in line with ITU G.713 model as shown
Analog (four-wire to four-wire or two-wire to two-wire) channel signal/total distortion and input level
Two/four-wire interface specifications:
Compression rate: A law in ITU G.711
Impedance: Balanced 600Ω
Audio range: 300Hz-3400Hz
Return loss: not less than 18Db

Working conditions

Power consumption <35W
Working temperature 0~45℃
Relative humidity ≤95% (at 25℃)
Atmospheric pressure 70~106Kpa
Product Description




Company Information



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 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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