IDM GTD442 Dual Gigabit Telephone Optical Multiplexer

I. Overview

The IDM GTD442 dual-gigabit telephone optical terminal is a new-generation optoelectronic integrated transmission device developed by our company, based on high-speed fiber transmission technology and PCM technology. It integrates Ethernet transmission and PCM multi-service access functions, meeting the demands of users for fiber transmission and access of both broadband and narrowband services.

The IDM GTD442 is a fiber access device with multiple configurations. It provides fiber multiplexing of Ethernet, telephone, and serial interfaces, and can interoperate with the IDM GP2000 series optical interface devices.

The fiber interface rate of the IDM GTD442 is 2.5G, providing 2 wire-speed 1000M Ethernet channels, each with 1 electrical port GE and 1 optical port GX; it also provides 18 E1 bandwidth transmission channels.

The IDM GTD442 supports up to two groups of fiber interfaces on the line transmission interface, forming redundant optical ports, or chain networks, ring networks, etc.

On the user interface, it provides 4 groups of Ethernet interfaces, 4 telephone channels (central office, remote, magneto, 2-wire audio), 2 RS485 or 1 RS422 channels. The Ethernet interfaces can be configured in physical isolation or VLAN isolation modes.

At the central office, it can interconnect with GP2000 and GP2400 optical modules, through which it can connect to devices such as IDM G3CP, IDM OMP, IDM 30E, IDM 30F, IDM GP-MPconv, etc.

It is widely applicable in private networks such as public security, electric power, railway, mining, and public networks such as mobile, Unicom, and telecom.

II. Device Operating Principle

III. Product Features

Dual physically isolated wire-speed 1000M Ethernet channels;

Provides 4 telephone interface channels, which can be FXO central office automatic telephones, FXS remote automatic telephones, MAG magneto telephones;

2 optional RS485 data channels;

Optical port is SFP interface, optical modules can be configured as required;

Can be customized as dual optical ports to form chain networks.

IV. Single Optical Port Device Functions and Applications

Functions

u Point-to-point general-purpose telephone optical terminal diagram

u Point-to-point magneto telephone optical terminal

Applications:

u Fiber to the office, physical isolation between internal and external networks;

u Public security checkpoint information point construction;

u Community and factory information point construction.

V. Dual Optical Port Device Functions and Applications

Functions

u Dual optical port chain network telephone optical terminal interface annotation diagram

u Chain network topology with IDM GP2400-30E

Applications:

u Tunnel construction applications

u River monitoring and management

u Community information point construction

VI. Technical Specifications

1) Optical Interface

Interface Type	FC	Fiber Mode	Single-mode(Multi-mode optional)
Tx/Rx Rate	2.5Gbps	Tx/Rx Wavelength	1310nm/1550nm
Optical Output Power	-12~-6dBm	Receiver Sensitivity	Better than-18dBm
Transmission Distance	20Km, optional long-distance optical modules available for extended fiber transmission

2) Ethernet

Interface Type	RJ-45	Transmission Rate	10M/100M/1000Mauto-negotiation
Standard Protocol	SupportsIEEE802.3	Operating Mode	Full/Half-Duplex/Auto-Negotiation

3) FXO, FXS Interfaces

Audio Range	300Hz~3400Hz	Compression Rate	ITU G.711A-law
Impedance	Three-element compound impedance200Ω+560Ω//0.1μF	Loop current	20mA/channel

4) Power Supply and Power Consumption

Power Supply

AC220V/DC-48V

Power Consumption

≤90W

5) Environmental Conditions

Operating Temperature

-10oC ~+50oC

Relative Humidity

0~95%(non-condensing)

6) Product Dimensions

Length×Depth×Height

××(mm)

VII. Application Examples