User manual
Raisecom Technology Co., Ltd
4
2. Overview
2.1. Introduction
RC801/803/805-30B-FV35 series device is PDH fiber optic modem which is deployed to
transmit V.35 signals and transparent E1 data line on fiber. It also provides solution for
Router remote connection and is widely used in constructing Wide Area Networks.
RC801/803/805-30B-FV35 series device is standalone dual interface fiber optic modem
which can be placed on desktop and has individual power supply. It is used in pairs and
provides conversion between V.35 interface to fiber interface. It can also connect to
RC802/804/806-30B series fiber optic modem module which is inserted in RC002-16 or
RC002-4 chassis to realize SNMP network management and consequently manages
remote devices.
2.2. Main features
The first tributary of client side provides one ITU standard V.35 synchronized data
DCE interface.
It provides single strand or dual strand transmission fiber.
It realizes V.35 interface bandwidth adjustment using ITU-T G.704 frame structure.
It provides the complete fiber line alarm and internal E1 detection alarm as well as
the local and remote line alarm indication.
It provides the local and remote loopback detection function to check the circuit and
device and perform the maintenance.
Support internal E1 data channel’s
fractional
/unframed (transparent) transfer
mode. It can distribute timeslot freely in
fractional
mode.
Provides three clock mode: master clock(internal clock),slave clock(follow fiber line
clock),V.35 terminal clock( follow V.35 interface clock).
When use
fractional
mode in a pair, the remote timeslot can follow local timeslot’s
configuration.
Internal error code test unit can make line detection and line test with several kinds
of loop-back type.
In fractional mode PCM30/PCM31 mode are optional and CRC4 verification function
is auto-negotiation.
Provide phase adjustment function of V.35 receiving data.
Provide Fault pass function to transfer alarm of data line to V.35 interface, so that to
judge E1 signal errors through router.
Very large scale ASIC chips, low consumption; four level PCB design, high reliability.