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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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Overview of E&M Interfaces

Overview of E&M Interfaces

This section describes the definition and purpose of E&M interfaces.


E&M interfaces are used to receive and send E&M data. During communications, E&M data is first encapsulated into pseudo wire emulation edge-to-edge (PWE3) packets, and then routers at both ends of a Multiprotocol Label Switching (MPLS) tunnel transparently forward the PWE3 packets through the MPLS tunnel.


E&M interfaces are used for point-to-point (P2P) data transmission between E&M devices. For example, in the Air Traffic Control Communications System (ATCCS), E&M interfaces transmit voice signals between the Area Control Center (ACC) and stations for calls between traffic control personnel and people on airplanes.

Updated: 2019-03-06

Document ID: EDOC1100069331

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