Hardware Overview - Cisco ATA adaptor Overview

Chapter 1 Cisco Analog Telephone Adaptor Overview
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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.
panel of the Cisco ATA 186.
Figure 1-4
Figure 1-5
OL-4803-01
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.
Figure 1-5
Cisco ATA 186—Rear View
PHONE 1 PHONE 2
RJ-11 FXS ports
RJ-45 10BaseT
Cisco ATA 188—Rear View
PHONE 1 PHONE 2 LINK
RJ-11 FXS ports
LINK LED
RJ-45 10/100BaseT ports
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for MGCP (version 3.0)
shows the rear panel of the Cisco ATA 188.
10BaseT ACT 5V
Power
connector
ACT LED
10/100 PC 10/100 UPLINK LINK 5V
Power
connector
LINK LED
Hardware Overview
Figure 1-4 shows the rear
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