PCM

PCM·📅UpdatedMay 12, 2026·✍️管理员

The IDM DXC5000 timeslot cross-connect device utilizes 8 standard E1 transmission channels to provide various user interfaces such as voice, data, and image. It also features non-blocking timeslot cross-connect between 8 E1 groups and all user interfaces. The device supports multiple clock modes to meet clock requirements in various application environments. The number of voice interfaces can be expanded to 240 via 8 E1 ports on the main control card, and key units can adopt dual-card mutual backup.

1. Overview

The IDM DXC5000 timeslot cross-connect device is one of the PCM timeslot cross-connect devices designed by our company using dedicated large-scale integrated circuits. It connects user terminal devices or user terminal devices to the public switched telephone network via 2M transmission media.

The device can utilize 8 standard E1 transmission channels (G.703 standard) using PCM30/31 framing to directly provide various user interfaces such as voice, data, and image. It also features non-blocking timeslot cross-connect between 8 E1 groups and all user interfaces. The device supports multiple clock modes to meet clock requirements in various application environments.

The number of voice interfaces can be expanded to 240 via 8 E1 ports on the main control card, and key units can adopt dual-card mutual backup.

IDM DXC5000 Timeslot Cross-connect Device Image

2. Product Features

Ø 19-inch 3U standard chassis with 2 power card slots, 2 main control card slots, and 12 service slots;

Ø Dual 48V power supply, supporting 1+1 hot backup;

Ø DXC main control card provides 8 E1 interfaces, supporting dual main control mutual backup;

Ø DXC main control card provides user interface access and management, data and signaling cross-connect, system synchronization, and device networking control and management;

Ø Provides comprehensive 64K and N*64K interfaces; service types and quantities can be arbitrarily configured within the chassis, with each slot capable of outputting 8 or 10 channels of 64K services;

Ø Supports FXS/FXO, magneto, 2/4-wire EM, RS232/RS422/RS485, GSM/CDMA services.

3. Technical Specifications

E1 Interface

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

Ethernet

Transmission Rate	N×VC12 (N≤50)
Standard Protocol	Supports IEEE802.3	Operating Mode	Full/Half Duplex/Auto-negotiation

FXO, FXS Interfaces

Audio Range	300Hz~3400Hz	Compression	ITU G.711 A-law
Impedance	Triplex impedance 200Ω+560Ω//0.1μF	Loop Current	20mA per channel

EM 2/4-wire Interface

Audio Range	300Hz~3400Hz	Impedance	Balanced 600Ω
Compression	ITU G.711 A-law	Return Loss	Not less than 18dB

V.24 Interface

Transmission Rate

Asynchronous ≤9600bps; Synchronous 64Kbps

Electrical Characteristics

Complies with CCITT V.28 protocol

V.35 Interface

Interface Type	RJ-45	Electrical Characteristics	Complies with ITU-T V.35 recommendation
Transmission Rate	n×64Kbps (n=0～31)	Terminal Interface	Complies with ISO2593