Cisco Systems ATA 188, ATA 186 manual Hardware Overview

Chapter 1 Cisco Analog Telephone Adaptor Overview

Hardware Overview

•Determines the availability of the target endpoint.

•Establishes a session between the originating and target endpoint if a call can be completed. MGCP also supports mid-call changes, such as adding another endpoint to the conference or changing a media characteristic or codec.

•Each MGCP endpoint supports up to two connections per device. Each connection has a fixed ID—0, 1, 2, or 3. Connection IDs 0 and 2 are assigned to MGCP Endpoint 0, and connection IDs 1 and 3 are assigned to MGCP Endpoint 1.

MGCP is a client-server protocol. The Call Agent handles all aspects of setting up calls to and from endpoints. Call Agents or control servers provide the feature capabilities that a particular endpoint uses. Endpoints connected to different Call Agents likely will have a different set of features.

Each control-server vendor determines its own set of features.

Hardware Overview

The Cisco ATA 186 and Cisco ATA 188 are compact, easy-to-install devices. Figure 1-4shows the rear panel of the Cisco ATA 186. Figure 1-5shows the rear panel of the Cisco ATA 188.

Figure 1-4 Cisco ATA 186—Rear View

PHONE 1 PHONE 210BaseT ACT 5V

			Power
RJ-11 FXS ports			connector
	RJ-45 10BaseT	ACT LED

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Figure 1-5 Cisco ATA 188—Rear View

PHONE 1 PHONE 2LINK 10/100 PC 10/100 UPLINK LINK 5V

			Power
RJ-11 FXS ports			connector
	LINK LED	LINK LED

RJ-45 10/100BaseT ports

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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)

OL-4803-01 1-3