Matn Ertebat Gostaresh

REOP Ethernet Over PDH Converter

Overview

REOP is an Ethernet over PDH converter, which supports the conversion from Ethernet frames to 1~16 E1 lines. The maximum bit rate is 31.68Mb/s (16 E1 lines).
The maximum tolerated differential delay is 220ms. Depending on the different E1 card it is used with, REOP can provide 4, 8, or 16 E1 interfaces, and the impedance can be 75Ù or 120Ù.
REOP supports SNMP (Simple Network Management Protocol) and CLI (Command Line Interface) network management. It provides alarms and the status of the E1 line and Ethernet interface.
Complying with ITU-T standard protocol, REOP has interoperability with the products of other vendors.


Application

Below figure illustrates a typical application (point-to-point). With REOP system, the Ethernet
is transferred by 16E1. The REOP complies with international standard so that it can communicate with similar products from other manufacturers. Note that REOP can only support point-to-point application.

Features


E1 interface

Supports Ethernet data convert to 1~16 E1sautomatic removal and recovery of E1 channels when urgent alarms (LOS, LOF etc.) occur or disappear.
The maximum tolerated differential delay is 220mstolerance complies with ITU-T G.823


Ethernet interface

Up to 4 Ethernet portstable supporting up to 1024 MAC addresses with a 5-minute aging timeframe size from 64 to 1916 bytestagging function complaint with IEEE 802.1Qtraffic statistics for every Ethernet port PAUSE flow control, which is software configurableoptical Ethernet interface compliant with IEEE 100BASE-FX and electricalinterface compliant with IEEE 100BASE-TX/10BASE-TX


Management interface

CLI via RS232 or Ethernet(telnet)management GUI based on SNMPwith ITU-T standardsencapsulation compliant with ITU-T G.7041
concatenation(VCAT) and Link Capacity Adjustment Scheme (LCAS) compliant with ITU-T G.7042
Ethernet to n×E1(n=1-16) mapping compliant with ITU-T G.7043to single E1 mapping compliant with ITU-T G.8040
bandwidth adjustments without damaging the Ethernet data E1s in the local and remote sides can be arranged arbitrary. For instance, the remote E1 port 1 can communicate with local E1 port 3 Supports unbalanced bandwidth usage– when some E1s cannot work properly (i.e. the bandwidth of the transmitting and receiving signals can be 5 E1s and 3 E1s respectively ) Automatic detection and cut off when working E1 is loopback modeE1 loopback function for E1 line testing


Local and remote LED alarms

low power consumptioninch width and 1 U height