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CLI-based Configuration Guide - Interface Management

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the basic concepts, configuration procedures, and configuration examples of the interfaces supported by the device.
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Configuring the PCM Companding Algorithm

Configuring the PCM Companding Algorithm


There are two pulse code modulation (PCM) companding algorithms: A-law algorithm and u-law algorithm. The A-law algorithm is mainly used in digital communication systems of Europe and China. The u-law algorithm is mainly used in digital communication systems of North America and Japan.

Choose the PCM companding algorithm based on the standard used locally.


  1. Run system-view

    The system view is displayed.

  2. Run interface serial interface-number

    The E&M interface view is displayed.

  3. Run em pcm { a-law | u-law }

    The PCM companding algorithm is configured.

    By default, the PCM companding algorithm is A-law algorithm.

Updated: 2019-03-06

Document ID: EDOC1100069331

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