BH series Multi-service PDH Fiber Optic
Multiplexer provides idealsolutions for building fiber-based E1 and IP
networks. It converts 4 or 8 or 16E1s plus 4 Ethernet ports data to optical
signal and transmits the convertedsignal over the fiber cable.

Ethernettransmission utilizes 4
integrated Ethernet ports which support 802.1Q VLAN Tagfunction. The electrical
Ethernet ports can operate in half or full duplexmode. IEEE 802.3x Flow Control
and backpressure are also supported.

BH series supports redundant power supply andsecondary link options,
enhancing system reliability. The optional secondarylink provides backup using
automatic switch over upon main link failure.

§ Dual
optical link with 1+1 protection, optional secondary link providesautomatic
backup

§ Supports
single mode or multimode fiber

§ Optional
dual-strand fiber and single-strand fiber (WDM technology)

§ Provides
4/8/16xE1 with 75ohm unbalanced or 120ohm balanced interfaces

§ Built-in
BER tester for E1 channels

§ Supports
Loopback on E1 channels

§ Provides
4×10/100BASE-TX Ethernet ports

§ Support
auto negotiation, MDI/MDI-X auto-sense, 10M/100M, full/half duplex

§ Supports
802.1Q VLAN Tag function

§ Supports
port-based, 802.1p and DSCP ToS scheme with 2-level priorityqueues

§ Supports
802.3x Flow Control function

§ Provides
Console (RS232) management Interfaces and optional SNMP managementinterface

§ Compact
structure with 1U×19inch, low power consumption and highreliability

§ Dual
power supply, -48V DC and 220V AC selectable