Chapter 1 Overview
1. Description
RC902- FE4E1, 10/100M auto-sensing Ethernet interface converter of Ethernet
to 4E1, is one product of RC series converters made by Beijing Raisecom Science &
Technology Co. ltd. It provides a simple solution to enable Ethernet access by using 4
E1 links for signal transmissions.
RC902-FE4E1 is modular device. It can provide central SNMP management
solution, when it is plugged in RC002-16 that is 16 slot chassis.
It can support remote management when it works in pair with RC901-FE4E1.
2. Specification
1
）
E1 interface
：
RJ-45 (120
Ω
, balanced)
Bit rate: 2048Kbps±50ppm
Line code: HDB3
Compliance: ITU-T G.703,
ITU-T G.823
Other features:
Real-time BER detecting and E1links auto protection auto-reset
Resistance for drift of 512UI, the ability of counteraction of jitter and drift
Selectable BER threshold of link auto-reset: 10
-6
(default) or 10
-5
2
）
Fast Ethernet interface
：
Interface: RJ-45, cat5/cat5e cables available, supports link distance up to 100m
Bit rate: selectable, Auto-sensing 10M/100Mbps or manual configuration
Duplex type: Full/Half duplex auto-negotiation or manual configuration
Compliance: IEEE 802.3
、
IEEE 802.3u
Other features:
Supports maximum frame size up to 1536 bytes
Supports IEEE 802.3d Spanning Tree, 802.1q VLAN
Supports 1K MAC address table, address filtering, improve efficiency of
E1 link
Supports Auto-MDI/MIDX auto-negotiation
Supports Link Fault Pass-though (LFP)
Provides 64Mbit SDRAM for reducing the network congestion.
3. Features
3
