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.。

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

n 1U height, 19 Inch width standard

n Service interface

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

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

n System interface

Ø  Ethernet management interface: EMU (RJ45 connector)

Ø  RS232 network management interface: CONSOLE (RJ45 connector)

Ø  RS232 user channel interface: RS232 (RJ45 connector)

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

Ø  Engineering Order Wire (EOW) interface: PHONE (RJ11 connector)

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

n Timing mode

Ø STM-1 line timing (T11,T12)

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

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

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

Ø ITU-T G.813 internal oscillator

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

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

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

n Supports embedded BERT and various loop back for troubleshooting

n Highly efficient management system

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

Ø Supports Network management based on PC via unified platform: GTVIEW

Ø 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).

n Power system

Ø Two backup power supply

Ø 220V AC or-48V DC single power

Ø -48V DC & 220V AC double power 

Ø  -48V DC & -48V DC double power 

Ø 220V AC & 220V AC double power 

Ø Power consumption less than 25W

l   System Fabric

n Cross Connect: 4* 4 VC-4

l   Optical Interface

n Optical Port: S1.1, L1.1, L1.2

n Connector: SC, FC

n Wavelength: 1310nm, 1550nm

n Coding: NRZ

n Max. Spectrum Width(RMS): G.957

n Max. Tx Power: -8/ 0dBm

n Min. Tx Power: -13/ -5dBm

n Extinction: 8.2/ 10dB

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

n Rx Overload: -8/ -10dBm, BER 10^-10

l   E1 Interface

n Coding: HDB3

n Bit Rate: 2.048Mb/s + 50ppm

n Connector: BNC (75Ω) / RJ45 (120Ω)

n Standard:ITU-T G.703、G.704、G.823

l   ETS/EXM interface

n Line Clock: E1, STM-1 Optical Link

n Internal Clock: Internal Oscillator

n Bit rate:2.048Mb/s±50ppm

n Impedance: 120Ω balanced

l   Ethernet management interface(EMU)

n Bit rate: 100Mb/s

n Connector: RJ45     

l   Operation Environment

n Working Temperature: -10℃~ 70℃

n Storage Temperature: -40℃~ 85℃

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

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

n Power Supply: AC 220V, DC -48V

n Power consumption: 25W±10％

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