DHODT-SDH- PDH Fiber Optic E1 G.703 Sc Als Optical Module V.35 V.24 Ethernet Network Communication E

DHODT-SDH- PDH Fiber Optic E1 G.703 Sc Als Optical Module V.35 V.24 Ethernet Network Communication Equipment

DHODT-SDH

Description

DHODT-SDH,a new-style optical transmission multi-service access device(hereafter as New-style Access Device for short),is a single-layer SDH product of the latest generation.Taking SDH technology as the core,DHODT-SDH provides convergent access,collection,switch,transmission and management functions for TDM service and broadband IP service.It is an optical transmission platform of integrated access that applicable for traditional telecom services and broadband data services.In addition,it is compatible with all PDH services,which makes it applicable for multi-service integrated access for edge networks,various special networks and big telecom customers etc.

The innovative architecture of DHODT-SDH device has expanded SDH technology to edge network.Therefore it is a high-end PDH access device that has taken the advantages of SDH technology into account,which can be applied to meet the current developing demands of big capability and access device integration for various edge devices of access network and special nerwork etc.

DHODT-SDH- PDH Fiber Optic E1 G.703 Sc Als Optical Module V.35 V.24 Ethernet Network Communication Equ

Features

>>Generally speaking,DHODT-SDH new-style multi-service optical transmission platform possesses the following features;

>>Provides standard STM-1 optical interface,supports ALS(Automatic Laser Shutdowm)function and abides by G.664 standard;

>>Provides two optical interfaces#1-01 and #1-02,four service access interfaces #2,#3,#4 and #5,and supports hot swap;

>>Provides 4xE1,10/100Base-T(VC-12 or VC-3 bandwidth)and 2xV.35 interfaces so as to intermix daughter boards of various services and allow different services accesses;

>>Provide order-wire telephone interface( two-line style) to full point to point calls;

>>Provides two relay-style overhead alarm output interfaces for prompt alarm and deferred alarm,and two switch input interfaces;

>>Provides random add/drop of VC-12 channel ,with the service interval to be randomly scheduled;

>>E1 signal has the functions of retime and pointer justification bypass;

>>Supports Ethernet interfaces sharing and point-to-point application and be compatible with all PDH services;

>>With excellent synchronization feature which allows to be synchronized with the line clock or the highly precise internal pulsating source.The line clocks of two optical directions can also be input as the clock reference input.

>>Diverse topology:supports various nerworking modes such as point-to-point,chain,ring(Center utility (CU)also supports T shape,cross ring and tangent ring)etc;

>>Supports various device control modes such as internal loop-back,external loop-back,enable and disable etc;

>>Provides standard SNMP uniform network management system;

>>To be managed conveniently; supports inquiry and conflguration of every node and every board in the network through operating panels without help of nerwork management;

>>Comprehensive and flexible modes of inquiry and configuration:a.panel;b.RS232 hyper terminal(standard TL1 command line);c.RS485 network management software;d.SNMP agent module,displaying through the interface of PC network management software;

>>Power supply adopts +1 hot standby,taking DC-48V/AC220V/DC-48V+AC220V(dual supply)as options;with an alarm function of remote terminal break-off.

DHODT-SDH- PDH Fiber Optic E1 G.703 Sc Als Optical Module V.35 V.24 Ethernet Network Communication Equ

Technical Specification

>>Optical Interface

Bit Rate of Optical Interface: 155520kbit/s(STM-1,G.957,Frame Structure G.707)

Code Type of Interface: Compliant with G.957 stipulated code

Digital Signal: Compliant with G.707 and G.958

Optical Source: LD

Output Optical Power: >=-9dBm

Receiver Type: PINFET

Receiver Sensitivity: <=-35dBm(BER<=10-11)

Type of Optical Connectors: FC/SC

Focus Wavelength: 1310/1550nm

Transmission Distance: 0~40km(40~120km to be customized)

>>Power Supply

Input Voltage: DC-48V/AC 220V/DC-48V+AC 220V

Voltage Fluctuation: 165VAC~265VAC or -36VDC~-72VDC

Power Consumption: <10~20(Power consumption varies with configuration of different interface boards)

>>Physical Parameters

Standalone Type(19''):

Exterior Dimensions: 440mm(W)x43.5mm(H)x227mm(D)

Weight: <4.0kg

Rack Type: EIA 19'' Rack

DHODT-SDH- PDH Fiber Optic E1 G.703 Sc Als Optical Module V.35 V.24 Ethernet Network Communication Equ

Interface Card

>>4xE1 Interface Card

Impedance: 75ohm unbalanced/120ohm Balanced

Code Type of Interface: HDB3

Max.Frequency Bias at Input Port: >+/-81ppm

Max.Attenuation at Input Por: >=6dB

Reflection Attenuation 51.2kHz~102.4kHz:>=12dB

102.4kHz~2048kHz:>+18dB

2048kHz~3072kHz:>=14Db

>>2xV.35 Interface Card

Bit Rate: 2.048Mb/s or N*64K

Clock: Master/Slave/Extermal Clocks optional

Type of Interface: V.35/DCE

Electrical Property: Standards proposed by V.35 of ITU-T

Terminal Standard: Compliant with ISO2593 Standard

DHODT-SDH- PDH Fiber Optic E1 G.703 Sc Als Optical Module V.35 V.24 Ethernet Network Communication Equ

>> Ethernet Interface Card(2Xfe)

User Type: 10/100M Base-T

Codes of Port: Compliant with

Interface Standard: IEE802.3 10/100M Base-T/FL Standare

Transmission Bit Rate: 2M/34M(VC-12/VC-3)

Terminal Standard: Supports port share or point-to-point application

DHODT-SDH- PDH Fiber Optic E1 G.703 Sc Als Optical Module V.35 V.24 Ethernet Network Communication Equ

DHODT-SDH- PDH Fiber Optic E1 G.703 Sc Als Optical Module V.35 V.24 Ethernet Network Communication Equ