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SL91MD1A, Huawei SL91 Series Board, 32 E1 Channels/75 Ohm/Smart Processing

  • Brand: Huawei
  • Model: SL91MD1A
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    SL91MD1A, Huawei SL91 Series Board, 32 E1 Channels/75 Ohm/Smart Processing

    SL91MD1A, Huawei SL91 Series Board, 32 E1 Channels/75 Ohm/Smart Processing

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    Overview

    Huawei SL91MD1A Overview

    The Huawei SL91MD1A is a carrier-grade E1 interface processing board designed for dense TDM access and aggregation. Supporting 32 E1 channels at 2.048Mbps over 75 ohm coax, it delivers reliable transmission for legacy voice and leased-line services in metro and access networks. With smart processing, built-in diagnostics (self-test and loopback), and interfaces via RJ-45 and BNC, the SL91MD1A simplifies maintenance for operators and integrators. Its compact 235mm × 156mm × 30mm form factor, low 15W power draw, and 48V DC supply enable efficient deployment in constrained POPs and cabinets across diverse environments.

    Product Highlights

    32
    E1 Ports
    2.048Mbps
    E1 Rate
    75Ω
    Impedance

    Product Applications Scenarios

    Service Providers
    The SL91MD1A aggregates 32 E1 channels on 75Ω coax, helping carriers backhaul TDM voice and leased lines while cutting rack space and power by up to 30% versus discrete units.
    Enterprise Network
    Enterprises use the SL91MD1A to interface PBXs and legacy E1 WAN links, maintaining stable 2.048Mbps services and simplifying migration to packet cores without downtime.
    Public Infrastructure
    Utilities and transport operators rely on its 32-channel E1 processing and loopback diagnostics to secure SCADA, signaling, and voice traffic with reduced on-site maintenance.

    Product Features Comparison

    Huawei Huawei Huawei Huawei
    Model SL91MD1A, Huawei SL91 Series Board, 32 E1 Channels/75 Ohm/Smart Processing TNH1ISUF02, Huawei TNH1 Series Integrated System Control Unit, 21xE1/120ohm, 2xSTM-1, ESFP Optical Module VC8D04E1BD01, Huawei ViewPoint, 4-Port E1 Board/Video Conferencing/For Parket Series TNDD00MD1A00, Huawei OSN 1800 Board, 32×E1 75Ω/Interface Card/No Fan & PSU
    Brand Huawei Huawei Huawei Huawei
    Module Type E1 Interface Processing Board Integrated System Control Unit E1 Interface Board Interface Board
    Port Configuration 32 Channels 21 E1, 2 STM-1 4 x E1 32 x E1
    Supported Speed 2.048Mbps n/a 2.048Mbps 2.048Mbps
    Compatible Platform n/a n/a Huawei ViewPoint Series Huawei Network Devices
    Installation Type n/a Standard rack size Plug-in module Plug-in Module

    Optional Add-ons

    Model Number Description
    TNDD000ML1A00 Huawei TNDD Series 16×75ohm E1 interface board for expanding mixed E1 capacity alongside SL91MD1A.
    SL9D0SP3SB01 Huawei OSN tributary board with 16×E1 75ohm BNC ports, ideal for complementary lower-density drops.
    TNDD00MD1A00 Huawei OSN 1800 32×E1 75Ω interface card providing an alternative high-density E1 termination module.

    Quality Certifications

    • ISO 14001
    • ISO 9001
    • RoHS
    • REACH
    • CE
    • FCC
    Specification

    Huawei SL91MD1A Specification

    Model
    SL91MD1A
    Brand
    Huawei
    SL91MD1A Specifications Brand
    Huawei
    Type
    E1 Interface Processing Board
    Channel Capacity
    32 Channels
    Connector Type
    75 ohm
    Dimensions (L x W x H)
    235mm x 156mm x 30mm
    Operating Temperature Range
    5掳C to 55掳C
    Storage Temperature Range
    40掳C to 70掳C
    Relative Humidity
    5% to 95% (non-condensing)
    Power Supply
    48V DC
    Power Consumption
    15W
    MTBF (Mean Time Between Failures)
    150,000 hours
    Compliance
    IEC 60950, CE, RoHS
    Data Rate
    2.048Mbps
    Input Sensitivity
    0dB to -12dB
    Output Level
    2.37V 掳10%
    Impedance
    75 ohm
    Diagnostics
    Self-Test, Loopback Test
    Interfaces
    RJ-45, BNC
    LED Indicators
    Power, Status, Alarm

    Get more information

    Discover unbeatable prices and fast shipping for the SL91MD1A, Huawei SL91 Series Board, 32 E1 Channels/75 Ohm/Smart Processing . Access the detailed SL91MD1A, Huawei SL91 Series Board, 32 E1 Channels/75 Ohm/Smart Processing datasheet and ensure you're getting the best deal with our reliable delivery service. Need assistance? Our free live chat support is here to help. For more information about the product and pricing, contact us via live chat or email us at [email protected].

    Quality Certifications

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    Q&A

    Questions & Answers

    How does the SL91MD1A compare to similar products?

    Compared to similar products, the SL91MD1A offers robust E1 processing capabilities, high-channel density, and reliability, making it a standout choice in its category.

    What common troubleshooting steps should I follow for the SL91MD1A?

    Common steps include checking cable connections, verifying system compatibility, and ensuring firmware is up to date to resolve most issues.

    How can I ensure optimal performance of the SL91MD1A?

    To ensure optimal performance, regularly update firmware, maintain proper installation, and follow manufacturer guidelines for usage and maintenance.

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