63E1 Compact SDH Transmission System (RS1020)

Overview

RS1020 is the 63E1 compact STM-1 level Synchronous Digital Hierarchy (SDH) transmission system compatible with ITU-T standard. It is designed as a modular system with two 155.520Mb/s optical interfaces to provide an ultra-compact, cost-effective and high capacity platform. It provides fully cross-connect between all tributaries, and can be used as Terminal Multiplexer (TM) or an Add-Drop-Multiplexer (ADM) to build point-to-point, ring and chain transmission network.

Feature

Achieve Multiplexing from 63 E1 to 2 STM-1 optical interfaces 

1U height, 19 Inch width standard

Service interface

Two STM-1 optical interfaces, SFP optical module (LC connector)

Maximum 63 E1 interfaces compliant with ITU-T G.703, optional unbalanced/ balanced interface

System interface

• Ethernet management interface: EMU (RJ45 connector)

• RS232 network management interface: CONSOLE (RJ45 connector)

• RS232 user channel interface: RS232 (RJ45 connector)

• External synchronization interface / Extendable management interface : ETS1/EXM1, ETS2/EXM2 (RJ45 connector)

• UALM and DALM output interface: U/DALMO (DB9 connector)

Timing mode

• STM-1 line timing (T11,T12)

• Tributary timing from E1-1 to E1-63 (T2)

• External timing source input (T31/T32), 2048Kbit/s by default and 2048KHz selectable

• External timing output (T41/T42), 2048Kbit/s by default and 2048KHz selectable

• ITU-T G.813 internal oscillator

• The timing source can be auto-switched according to SSM or operator settings

• Supports 1+1 protection and Automatic Protect Switch (APS) with the switching time less than 50ms

• Supports Remote power Down Detection (RPD) and Auto Laser Shutdown (ALS)

• Supports embedded BERT and various loop back for troubleshooting

• Highly efficient management system

• Supports NE management based on CLI command via RS232 interface or TELNET

• Supports Network management based on PC via unified platform: RAYVIEW

• Supports three network management types: Traditional DCC management, Inner DCN management (by some VC12 channel) and outer

• DCN management (by E1 cable via outer EXM interface).

Power system

•  Two backup power supply

•  220V AC or-48V DC single power

•  -48V DC & 220V AC double power 

• -48V DC & -48V DC double power 

•  220V AC & 220V AC double power 

• Power consumption less than 25W

Application

RS1020 can be used as Terminal Multiplexer (TM) or an Add-Drop-Multiplexer (ADM) to build a point-to-point, ring or chain transmission network. As following figures shows:

Fig. 1 Point to point network

Fig. 2 Chain network

Fig. 3-3 Ring network

Note:  Make sure optical A of one NE must be connected with optical B of its neighboring NE.