IDM DXC8E1 Digital Cross-Connect Equipment

1. Overview

The IDM DXC8E1 Digital Cross-Connect Equipment is an integrated service platform that combines 64K narrowband service access, PCM multiplexing, and 64K timeslot cross-connect in one unit.

The IDM DXC8E1 is primarily used for service access and cross-connect at the access layer of data communication networks. It features complete synchronization and timing functions, providing non-blocking 64K-level cross-connect across 8 E1 channels, while also supporting 30 channels of 64K services, including telephone, magneto telephone, common battery telephone, and V.24 data services.

2. Product Features

Non-blocking cross-connect across all timeslots of 8 E1 groups;
The host provides 30 channels of 64K (or Nx64K) user narrowband service access;
The main board provides 15 service card slots, with up to two services per card;
Voice interfaces can be FXO central office automatic telephone, FXS remote automatic telephone, or MAG magneto telephone; data services include V.24/RS232/RS485/RS422, X.50/X.58, co-directional 64K, V.35/V.36 with Nx64K bandwidth, and Ethernet bridge;
Supports serial port network management or Ethernet SNMP network management;
Supports AC 220V power supply or DC -48V power supply;
8 E1 groups can form point-to-point, chain network, star network, and other topologies.

3. Technical Specifications

1) E1 Interface

Bit Rate	2.048Mbps	Line Code	HDB3
Standard Protocol	SupportsITU-T G.703	Impedance	75Ω/120Ω
Frame Structure	PCM30/32	Signaling	Channel-Associated Signaling

2) Ethernet (FE)

Interface Type	RJ-45	Transmission Rate	N×VC12(N≤50)
Standard Protocol	SupportsIEEE802.3	Operating Mode	Full/Half Duplex/Auto-Negotiation

3) Ethernet (GE)

Interface Type	RJ-45	Transmission Rate	N×VC12（N≤63）
Standard Protocol	SupportsIEEE802.3	Operating Mode	Full/Half Duplex/Auto-Negotiation

4) FXO, FXS Interfaces

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

5) Co-directional 64K interface

Line Code	G.703Standard	Line Rate	64Kbps
Impedance	Balanced120Ω	Fully compliant withITU G.703recommendation

6) EM2/4-wire interface

Audio Range	300Hz~3400Hz	Impedance	Balanced600Ω
Compression rate	A-law per ITU G.711	Return loss	Not less than18dB

7) Magnetic Ring Interface

Audio Range	300Hz~3400Hz	Impedance	Balanced600Ω
Compression Rate	A-law per ITU G.711	Return Loss	Not less than18dB

8) V.24 Interface

Transmission Rate

Asynchronous≤9600bps; Synchronous64Kbps

Electrical Characteristics

Compliant withCCITT V.28protocol

9) V.35 Interface

Interface Type	RJ-45	Electrical Characteristics	Complies withITU-T V.35Recommendation
Transmission Rate	n×64Kbps（n=0～31）	Terminal Interface	Complies withISO2593specifications

10) Power Supply and Power Consumption

Power Supply

AC220V/DC-48V

Total Power Consumption

≤150W

11) Environmental Conditions

Operating Temperature

-10oC ~+50oC

Relative Humidity

0~95%(non-condensing)

12) Product Dimensions

Length×Depth×Height

482×309×44(mm)

IV. Application Examples