63 E1 STM1 SDH Multiplexer

Global Tech GT-SDH-155A 63E1 SDH is the 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.

Product 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)

■  Engineering Order Wire (EOW) interface: PHONE (RJ11 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: GTVIEW

■ 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

 Technical Parameter

●   System Fabric

■ Cross Connect: 4* 4 VC-4

●   Optical Interface

■ Optical Port: S1.1, L1.1, L1.2

■ Connector: SC, FC

■ Wavelength: 1310nm, 1550nm

■ Coding: NRZ

■ Max. Spectrum Width(RMS): G.957

■ Max. Tx Power: -8/ 0dBm

■ Min. Tx Power: -13/ -5dBm

■ Extinction: 8.2/ 10dB

■ Rx Sensitivity: -28/ -34dBm, BER 10^-10

■ Rx Overload: -8/ -10dBm, BER 10^-10

●   E1 Interface

■ Coding: HDB3

■ Bit Rate: 2.048Mb/s + 50ppm

■ Connector: BNC (75Ω) / RJ45 (120Ω)

■ Standard:ITU-T G.703,G.704,G.823

●   ETS/EXM interface

■ Line Clock: E1, STM-1 Optical Link

■ Internal Clock: Internal Oscillator

■ Bit rate:2.048Mb/s±50ppm

■ Impedance: 120Ω balanced

●   Ethernet management interface(EMU)

■ Bit rate: 100Mb/s

■ Connector: RJ45     

●   Operation Environment

■ Working Temperature: -10℃~ 70℃

■ Storage Temperature: -40℃~ 85℃

■ Relative Humidity: 5%~ 95%, non-condensing

■ No corrosive and solvent gas, no dust and heavy EMI

■ Power Supply: AC 220V, DC -48V

■ Power consumption: 25W±10％

■ Physical Dimension: 484mm×44mm×255mm (width ×height ×depth)

Typical Network Diagram

For more technical detail, please visit our website---http://www.cantongt.net