Connecting the world with professional
Fiber Optic Solutions

email to us

Company Info
Top Seller
N x E1 PDH Multiplexer 1+1 PDH Multiplexer E+E PDH Multiplexer 1+1 E+E PDH MUX
Phone Optical Multiplexer 4U and 6U PDH Chassis E1 Fiber Modem RS422 Fiber Modem
V.35 Fiber Modem RS232 Fiber Modem RS485 Fiber Modem ETH Fiber Modem
STM-1 Fiber Converter
  • 1
  • 2
  • 3
green_arrow image about

E1 Fiber Modem

SPD-E1-D-20-131AS 48v back panel fiber modem.JPG


Product Impression:

  1. Manufacturer: SOPTO

  2. Latest Price: Contact our customer services NOW!

  3. Data Rate: 10/100Mbps, 1000Mbps

  4. Wavelength: 1310nm

  5. Fiber Types: SM dual fiber

  6. UTP Cable: UTP category 5, 5e cable,

  7. Color: Black or as customized

  8. Fiber Connector Type: SC/FC

  9. Interface Type: RJ45, E1, optical fiber, BNC

  10. E1 Interface Impedance: 75Ω (unbalance), 120Ω (balance)

  11. Transmission Mode: Half duplex or full duplex

  12. Transmission Distance: 20/ 40 / 80 / 120 Km, WDM up to 60 km

  13. Line Impedance: 120 Ohm / 75 Ohm

  14. Storage Temperature: -20 ~ 70°C

  15. Operating Temperature: 0 ~ 50°C°C

  16. Operating Humidity: 0%~90% RH no condensing

  17. Storage Humidity: 5%~90% RH no condensing

  18. Dimensions:  140(D) x 210(W) x 42 (H) mm

  19. Weight:  900 g

  20. Power: 220V or 110V or 48V power supply or both

  21. Power Consumption: ≤5W

  22. Manageable or Unmanageable: Manageable or unmanageable are both available

  23. Application: Mobile Phone Net Station, FTTH

  24. Browse the Evaluation: Click here to browse


Performance Feature:

  1. Realized one E1 transmitting over fiber in transparent mode

  2. Allow the equipment to interoperate over V.35 fiber modem and Ethernet fiber modem

  3. Realize one RS232 data transmitting in optical fiber line with 4800bps rate

  4. Have a loop setting function and easy to open and test

  5. Enable to manage networks and supervise equipment running and settings

  6. Provide unbalanced 75Ω and balanced 120Ω E1 interfaces

  7. Support ITU-T G.703, G.704

  8. HDB3 line coding, comply indication output of route warn

  9. Coding rate: 2048Kbps±50ppm

  10. 75Ω physics interface use BNC standard coaxial connector; 120Ω physics interface use RJ45 connector


Note: Part in order to prevail in kind. Please contact customer service before buying.


Quality Certification:

  1. Good Anti-electromagnetic interference (EMI)

  2. Good Electromagnetic compatibility (EMC) which is in accordance with FCC Part15.

  3. Meets ISO9001, TUV, CE, FCC, CAS, UL and RoHS certificates



  1. Advanced dust-free workshop

  2. Experienced technicians

  3. Mature production technology

  4. Standard production process


Information you want to know more:

  1. Reachable Continents: Asia, Europe, Oceania, Africa, the Americas

  2. Arrival Date: 5 to 7 days

  3. Selectable Logistics: FedEx, DHL, TNT, UPS or EMS

  4. Payment Methods: L/C, T/T, Western Union, HSBC, Paypal as well as Cash Payment

  5. Warranty: 1-3 years

  6. Discounts, Promotions and Gifts: Please just contact our online customer services or pay attention to our website.


pay and logistics

Related Read:

  1. Payment methods

  2. Delivery guide

  3. Return & Refund

  4. Guarantee

  5. FAQ


Please pay attention to our SNS pages: 

Facebook      Twitter      Linkedin


Brief introduction of E1 Fiber Modems


The E1 Fiber Modem is designed for G.703 E1/T1 transmissions. The BNC model provides unbalanced 75 Ohm coaxial E1 connections while the RJ-45 model provides switchable balanced 120 Ohm E1 or 100 Ohm T1 connections over twisted pair wiring.


Application of E1 Fiber Modems


E1 Fiber Modems can connect the data one-port E1 or one-port RS232 to the optical interface. The equipment is wildly used in the mobile phone net station and FTTH interface parameters the VIP optical insert.



Application Diagrams:

Part No.Description
SPD-E1-D-20-131ASE1 Fiber Modem, SM dual fiber,120ohm or 75Ohm SC/FC connector 220V or 48V
SPD-FE1-D-20-131ASFE1 Fiber Modem, SM dual fiber,120ohm or 75Ohm SC/FC connector 220V or 48V


Comment Imgae
The customer service is really helpful when you are not sure about which item best fits for your requirements.
Comment Imgae
Excellent service. Always have the stuff I want in stock and the pricing is spot on.
Comment Imgae

I'll be sure to try to order from them for such products, even though they cost a tad more.good quality.

Comment Imgae
hello dear Mr-MsI am Nazmi from iran-mahan telecomm company,for running our projects ourcompany need your products.for beginning we need 20 pcs 1e1 (or 2e1or e3 if possible)75 ohm unbalanced fiber modems up to 5km(singlmod1310 nm) AC220 and 20 pcs -48v d