Raisecom Technology Co., Ltd
4
2. Overview
2.1. Introduction
RC904-V35FE1-BL V.35 to E1 interface module converter extends
transmission distance of V35 data by utilizing long haul transmission of E1 line.
They provide a solution for remote connection of routers, and are very common
interface converter devices in WAN organizing.
RC904-V35FE1 provides one V.35 interface and one E1 interface to support
N×64Kbps
（
N=1~31
）
fractional E1 transmission.
RC904-V35FE1-BL series are module devices and can be installed in
Raisecom RC002-16 16 slots chassis, RC002-4 4 slots chassis and RC001-1
single slot chassis, SNMP network management is available and remote
device status also can be inquired.
2.2. Main
feathers
z
Provide a DCE interface for V35 synchronous data and is compliant with
ITU norm.
z
Provide a 120
Ω
balanced E1 interface compliant ITU-T G.703, and the
longest transmission distance is 1800m.
z
Utilize ITU-T G.704 frame format to adjust the bandwidth of V35 interface.
z
Diversified E1 cable alarms provide local and remote alarm index.
z
Support local and remote loop-back function for error code test.
z
Support both E1 fractional frame format and transparent frame format, and
in fractional mode all the time slots are available for configuration.
z
Provide 3 kinds of clock mode: master clock (inside timing), slave clock
(follow E1 line for timing), V35 clock (follow V35 line for timing).
z
The remote device can detect the local device automatically to synchronize
time slot configuration when the devices are pair used in fractional mode.
z
Inside error code test module is available for variable loop back tests to
diagnose faults.
z
Both PCM30 and PCM31 are available in fractional mode, and CRC4
function is auto-adapted.
z
Support adjustment function of V35 Rx data phase.
z
Support fault pass through function, and the line fault can be tested from
the V35 interface.
z
Utilize large scale ASIC chip and 4 layers of PCB, low power consumption
and high reliability.
