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2E1 PCM Multiplexing

The 2E1 PCM multiplexing equipment is a cost-effective multi-service integrated access equipment that can multiplex multiple services such as FXS/FXO voice signals, RS232 serial port data, Ethernet signals, etc. to one or two E1 digital channels for transmission. The equipment has a compact structure and stable functions. It is widely used in industry users who need to build a safe, efficient, and unified communication platform, especially for the establishment of private networks and remote access scenarios in the military, power, public security and other industries.
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Product Description

Product Advantage

  • Adopting modular design, flexible structure, high integration, stable and reliable equipment performance

  • Supports a variety of telephone interfaces: FXS, FXO, magnet phone, hotline interface, adapting to various voice access requirements

  • Supports the transmission of two-wire/four-wire audio signals to meet different voice application scenarios

  • Supports 10/100M Ethernet signal transmission, suitable for data communication and network access

  • Supports RS232 serial port data transmission, compatible with industrial control, monitoring and other equipment access

  • The group provides 2 E1 interfaces, supports 1+1 hot backup and ADM self-healing ring network networking, and improves network reliability

  • 2 E1 can be bundled for Ethernet transmission, with a maximum bandwidth of 3.84Mbps, meeting higher data rate requirements

  • Supports caller ID function, suitable for telephone switchboards, voice systems and other applications

  • Supports AC 220V and DC -48V dual power input, flexible power supply, reliable operation

  • Provides complete status indication and alarm display, convenient for user maintenance and troubleshooting


Technical Parameters

◆ E1 interface

  • Interface code:   HDB3 code

  • Line rate:2.048Mbp/s±50ppm

  • Interface impedance:   75Ω / unbalanced, 120Ω / balanced

  • Physical interface: BNC(75Ω)/RJ45(120Ω)

  • Standard:   ITU-T G.703, G.704

  • Jitter characteristics:   Meet G.704 and G.823

  • Interface: BNC/RJ45


◆ FXS/FXO interface

  • Impedance: 200Ω+680Ω||0.1μF (FXO)

  • 200Ω+560Ω||0.1μF (FXS)

  • Frequency characteristics: 300~ 3400Hz(-0.6~+3dB)

  • Physical interface: RJ45


◆ Magnetic telephone interface

  • Impedance: 600Ω

  • Frequency characteristics: 300~ 3400Hz(-0.6~+3dB)

  • Ring current: 75V (55~90V), frequency: 25Hz (20~30Hz)


◆ Ethernet interface

  • Support IEEE 802.3/802.3u

  • Support 10/100M adaptive, full-duplex, half-duplex adaptive

  • Support cross-line and straight-through line adaptive

  • Transmission rate: N*64Kb/S (N=1~60)

  • Physical interface: RJ45


◆ RS232 interface

  • Rate: 300~ 19200b/S

  • Physical interface: RJ45


◆ Voice coding and signaling method

  • 16 time slot signaling, compliant with ITU-T G.732

  • A-rate PCM coding, 64Kb/S per voice channel, compliant with ITU-T G.711


◆ Power supply

  • -48V DC (-36~-72V) or 220V AC (165~265V) optional

  • Power consumption of the whole machine: less than 30W


◆ Mechanical structure

  • 19-inch 1U


Product Uses

  • Military communication system: used for unified voice and data transmission between remote camps and command headquarters to ensure communication security and efficiency.

  • Power dispatching network: realize stable voice and data communication between substations and dispatching centers, and improve the intelligence level of power systems.

  • Public security network: supports multi-service communication transmission of public security command systems, and meets the comprehensive business needs of nodes such as duty rooms and monitoring points.

  • Government and enterprise remote access: provides a cross-regional unified voice and data access platform for government agencies, enterprises and institutions.


FAQ

Q1: What types of business signals does the XT series PCM multiplexing equipment support?

A1: Supports FXS, FXO voice interfaces, RS232 serial port data, 10/100M Ethernet and other business signals.


Q2: How to choose to use 1 or 2 E1 channels?

A2: If the business volume is small or for point-to-point transmission, use 1 E1; if you need active-standby redundancy or higher bandwidth transmission, you can choose 2 E1 channels.


Q3: Does the device support remote management?

A3: It supports local or remote management, which is convenient for maintenance personnel to remotely view the status or perform troubleshooting.


Q4: Is it suitable for operation in harsh environments?

A4: The XT series adopts industrial-grade design and can work stably in a wide temperature and voltage range, suitable for outdoor machine rooms or industrial field environments.


Q5: Is it compatible with third-party E1 devices?

A5: It supports the standard G.703 E1 interface protocol, has good compatibility, and can be connected with a variety of E1 access devices.


Selection Guide

Model

E1 Interface

Ethernet Interface

Telephone Interface

Other Interfaces

Power Supply and Form Factor

PCM-30A

2 Ports, Supports 1+1 Backup and ADM Mode, Supports Bundled Transmission for Ethernet

2 Ports, Switched, Supports VLAN Isolation, Maximum Ethernet Bandwidth 3.968Mb/s

Supports 30 Ports, FXS/FXO, Magnetic, Hotline, etc., Supports 2-wire/4-wire Audio

Supports RS232 Asynchronous Data

AC/DC/Dual Power, 19-inch 1U


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