PCM设备 IDM-120E综合业务交叉复用设备

---

title: "PCM Equipment IDM-120E Integrated Service Cross-Connect Multiplexer"
model: "PCM"
category: "PCM"
tags:

• "PCM Equipment"
• "PCM Primary Multiplexer"
• "Voice PCM Equipment"
• "E1 Primary Multiplexer"
• "Integrated PCM Equipment"
• "Multi-service Integrated PCM Equipment"
• "PCM Equipment Quotation"
  description: "The IDM-120E Integrated Service Cross-Connect Multiplexer adopts a 19-inch 1U standard chassis, functioning as a PCM multiplexer that processes up to 4 E1 signals. It features 15 universal slots and 4 expansion slots, providing 30 channels of 64K plus 8 channels of n×64K user interfaces, with the flexibility to configure over 20 types of interface cards as required."
  cover: "/images/imports/img-4518a92c.webp"
  images:
• "/images/imports/img-4518a92c.webp"
• "/images/imports/img-f3977eb5.webp"
  keywords: "PCM Equipment,PCM Primary Multiplexer,Voice PCM Equipment,E1 Primary Multiplexer,Integrated PCM Equipment,Multi-service Integrated PCM Equipment,PCM Equipment Quotation"
  slug: "pcm-idm-120e"
  publishDate: "2026-05-12"

Overview:

The IDM-120E Integrated Service Cross-Connect Multiplexer utilizes dedicated large-scale integrated circuits to complete PCM multiplexing with processing of up to 4 E1 signals. It adopts a 19-inch 1U standard chassis with 15 universal slots and 4 expansion slots. It can provide 30 channels of 64K plus 8 channels of n×64K user interfaces, and over 20 types of interface cards can be configured as required. It can also accommodate PDH optical interface modules, providing up to 2 100M Ethernet ports and 4 optical directions, thereby enabling multiplexing of broadband and narrowband services over E1 or fiber, making it a multi-service integrated platform for PCM multiplexing and Ethernet access. The 38 user interface channels provided by the IDM-120E can be transmitted across 4 E1 directions. It can be flexibly combined with the IDM-240 series, IDM-120 series, IDM-30 series, and mini series to form various network topologies, including chain, star, and tree networks.

Product Features:

◆ High Integration Density
    Provides 38 user interfaces in a single 1U chassis, with over 20 optional service types. The 4E1 cross-connect processing capability currently represents the highest integration density available.
◆ Flexible Configuration of Multi-function Interfaces
    Built-in 4 multi-timeslot card channels. Supports n×64K V.35 cards and 10BASE-T cards. The multi-timeslot channels can also be used to provide high-rate asynchronous RS232 or RS485 interfaces. The V.35 card supports both DTE and DCE modes, offering cost-effective multi-timeslot user interface cards such as V.35 and 10Base-T.
◆ Rich User Interfaces and Flexible Access Methods
    The IDM-120E adopts an independent user module design, offering a variety of voice and data interfaces, including 64K co-directional, V.24/V.28 (RS232/RS485), V.35 (n×64K), 10Base-T, polarity reversal and caller ID telephones (FXO, FXS), magneto, 2100Hz carrier magneto, hotline, carrier, E&M 2/4-wire audio, high-fidelity audio, baseband trunk interface cards, No.1 signaling cards, telephone switching cards, and over 30 other user interface types. These can be flexibly reconfigured according to user requirements. The high-capacity, high-integration design meets diverse user needs.
◆ Two-level Timeslot Cross-Connect Function
    Built-in 128-timeslot cross-connect matrix. Enables data and signaling cross-connection for user-to-user, user-to-line, and line-to-line connections. Therefore, this unit can also serve as a timeslot cross-connect device for 4 E1 links.
◆ Multiple Clock Modes
    Supports master clock, external clock, line clock, and user clock modes. Can be configured as a switch interface or user interface, compatible with both central office and remote end applications.
◆ Flexible Networking Capability
    Provides E1 line transceivers in four transmission directions. Can be used in conjunction with the IDM-240 series, IDM-120 series, IDM-30 series, and IDM-mini series. Users can freely select configurations based on different capacity requirements and application scenarios, offering flexible, economical, and reliable networking.
◆ Network Management Function
    Features a concise and comprehensive network management system. Supports device configuration, query, and fault statistics management. The network management interface is available in both RS232 and RS485 formats. When using RS485, multiple devices can be cascaded simultaneously, and rack alarm output is also supported.
◆ Comprehensive Monitoring and Alarm Functions
    The host unit can issue audible alarms when E1 status changes; front panel LEDs display specific alarm states; the device can output rack alarm information; and the network management system can monitor device status at any time.
◆ Dual Power Supply and Dual Ringing Generator Backup
    Optional dual power supply and dual ringing generator modules. Operating in half-power mode extends the service life of the power supplies. Additionally, if one module fails, the system continues to operate normally.

Typical Applications:

• Dedicated line access for voice, data, and video surveillance in electric power, public security, financial, and educational systems
• Broadband and narrowband integrated service access for residential communities and intelligent buildings
• Data network extension for telecommunications, Netcom, and Unicom operators