PCM

PCM·📅UpdatedMay 12, 2026·✍️管理员

The IDM MAP8E1-30 Integrated Service Cross-Connect Multiplexer is a comprehensive service platform that integrates 64K narrowband service access, PCM multiplexing, and 64K timeslot cross-connection. The IDM MAP8E1-30 equipment is mainly used for service access and cross-connection at the access layer in data communication networks. It features complete synchronization and timing functions, providing non-blocking cross-connection at the 64K level across 8 E1 channels, and can simultaneously provide 30 channels of 64K services, including telephone, magneto telephone, common battery telephone, and V.24 data services.

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Overview

The IDM MAP8E1-30 Integrated Service Cross-Connect Multiplexer is a comprehensive service platform integrating 64K narrowband service access, PCM multiplexing, and 64K timeslot cross-connection.

The IDM MAP8E1-30 is primarily used for service access and cross-connection at the access layer of data communication networks. It features complete synchronization and timing functions, providing non-blocking 64K-level cross-connection across 8 E1 channels, while supporting up to 30 channels of 64K services, including telephone, magneto telephone, common battery telephone, and V.24 data services.

PCM Equipment IDM MAP8E1-30 Integrated Service Cross-Connect Multiplexer

IDM MAP8E1-30 Integrated Service Cross-Connect Multiplexer Device Image

Product Features

Non-blocking full-timeslot cross-connection across 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 service channels per card;
Voice interfaces include FXO central office automatic telephone, FXS remote automatic telephone, and MAG magneto telephone; Data services include V.24/RS232/RS485/RS422, X.50/X.58, co-directional 64K, Nx64K bandwidth V.35/V.36, 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.

Technical Specifications

1) E1 Interface

Line 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	Supports IEEE802.3	Operating Mode	Full/Half Duplex/Auto-Negotiation

4) FXO, FXS interfaces

Audio Range	300Hz~3400Hz	Compression	ITU G.711 A-law
Impedance	Triple Complex Impedance200Ω+560Ω//0.1μF	Loop Current	20mA/channel

5) Co-directional 64K Interface

Line Code

G.703 Standard

Line Rate

64Kbps

Impedance

Balanced120Ω

Fully compliant withITU G.703 Recommendation

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	ITU G.711A-law	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 withISO2593Specification