Fiber Optical Modem

Product Overview

B2100 series multiple E1 fiber optical modem is a type of multiple E1 optical interface conversion device developed by FiberHome networks in order to address the increasing service demands. This product provides 1/4/8/16-channel E1, 1-channel RS232, as well as 1-channel business signal, optical interface offers dual-fiber transmission of single optical port or dual optical port, and E1 port is 75/120Ω selectable. The use of multiple E1 fiber optical modem realizes the integrated access of business interface, while traditional PDH terminal device and RS232 fiber optical modem are just used in the single network platform. In addition, the rich network management functions greatly help reduce time and network maintenance costs.

Types
Standalone fiber optical modem

B2101-V35OM: V.35 over optical fiber

B2101-E1OM: 1* E1 over optical fiber

B2104-4E1OM: 4*E1 over optical fiber

B2104-4E1OM-D: 4*E1 over 2*optical fiber

B2108-8E1OM: 8*E1 over optical fiber

B2108-8E1OM-D: 8*E1 over 2*optical fiber

B2116-16E1OM: 16*E1 over optical fiber

B2116-16E1OM-D: 16*E1 over 2*optical fiber

Module type converter (inserted in B2112 rack)

LC-B2112-2V35OM: B2112 series module card, 2* V.35 ports over 2* optical ports separately

LC-B2112-2E1OM: B2112 series module card, 2* E1 ports over 2* optical ports separately

LC-B2112-4E1OM: B2112 series module card, 4*E1 ports over 1*optical port

LC-B2112-8E1OM: B2112 series module card, 8*E1 ports over 1*optical port

Benefits and Features
1. 1/4/8/16*E1 (2.048Mbps) transmission capacity, 75ohm non-balancing and 120ohm balancing interfaces are available.
2. The fiber optical modem supports one channel as RS232 data transmission, 300-115200bit/s auto-negotiation.
3. One RS232 NM interface offered realizes remote management to opposite-end device.
4. One business telephone interface provided that E1 channel is not used.
5. Dual fiber ports 1 1 backup.
6. Each E1 supports remote loopback, alarm mask function.
7. Rich LED indicator light and audio alarm system supported for local and remote device alarm.
8. DC-24V, DC-48V, AC110V, AC220V supported.

Technical Specifications of Fiber Optical Modem

E1 interface

Interface data rate: 2.048Mbps

Tolerance: ±50ppm

Interface coding: HDB3

Transmission capacity: 1*E1/4*E1/ 8*E1/16*E1

Interface impedance: 75Ω/120Ω

Interface electric standard: ITU-T G.703

Jitter transferring characteristics: ITU-T G.823

Input jitter tolerance limit: ITU-T G.823

Line optical interface

Line coding: NRZ

Interface data rate: 38Mbps

Light source: LD

Output optical power: >-10dBm

Receiver type: PINFET

Receiver sensitivity: <-36dBm BER≤10-10

Optical connecter type: SC/FC

Center wavelength: 1310nm/1550nm

RS232 data interface

Data rate: 300-115200bit/s self-sensing

Interface capacity: 1*RS232

Operating mode: DCE

Interface connector: DB9 female

RS232 network management interface

Data rate: 9600bit/s self-sensing

Interface capacity: 1*RS232

Operating mode: DCE

Interface connector: DB9 female

Business telephone interface

Business telephone: Four-line phone set handle

Calling mode: Key-press calling

Interface type: RJ11

Power options

Power supply:

110/220V: 85-265V, 50～60Hz

-48V: -36--72VDC

24V: 18--36VDC

Power consumption: <10W

Dimension (W×D×H)
 482mm×190mm×44mm (exclude B2101-V35OM, B2101-E1OM)

Weight
3Kg (exclude B2101-V35OM, B2101-E1OM)

Operating environment

Operating temperature:-5～50℃ 

Storage temperature: -40～85℃

Operating humidity: 5～95%, Non-condensing

Network Application ()

FHN is a professional fiber optical modem supplier based in China. Our company offers a vast range of products, including a protocol converter, carrier Ethernet switch, L2 switch, and SFP transceiver, among others.