Hardware Overview - Cisco ATA 190 Administration Manual

Hardware Overview

SIP Servers
SIP servers include:
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Hardware Overview
The ATA 190 is a compact, easy to install device.
Figure 1-3
The unit provides these connectors:
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The ATA 190 network port performs autonegotiation for duplex and speed. It supports speed of
Note
10/100 Mbps and full-duplex.
Cisco ATA 190 Analog Telephone Adapter Administration Guide for SIP (Version 1.1)
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Proxy server—The proxy server is an intermediate device that receives SIP requests from a client
and then forwards the requests on the client's behalf. Proxy servers receive SIP messages and
forward them to the next SIP server in the network. Proxy servers can provide functions such as
authentication, authorization, network access control, routing, reliable request retransmission, and
security.
Redirect server—Receives SIP requests, strips out the address in the request, checks its address
tables for any other addresses that may be mapped to the address in the request, and then returns the
results of the address mapping to the client. Redirect servers provide the client with information
about the next hop or hops that a message should take, then the client contacts the next hop server
or UAS directly.
Registrar server—Processes requests from UACs for registration of their current location. Registrar
servers are often colocated with a redirect or proxy server.
ATA 190—Rear View
5V DC power connector.
Two RJ-11 FXS (Foreign Exchange Station) ports—The ATA 190 supports two independent RJ-11
phone ports that can connect to any standard analog phone device. Each port supports either voice
calls or fax sessions, and both ports can be used simultaneously.
The ATA 190 has one network port—An RJ-45 10/100BASE-T data port to connect an
Ethernet-capable device, such as a computer, to the network.
Chapter 1 Cisco ATA 190 Analog Telephone Adapter Overview
Figure 1-3 shows the rear panel of the ATA 190.
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