Configuring The Cisco Ata To Obtain Its Configuration File From The Tftp Server; Using A Dhcp Server - Cisco ATA186-I1 Administrator's Manual

Configuring the Cisco ATA Using a TFTP Server
Example 2
In this example, a new Cisco ATA has already been deployed (with the EncryptKey value set) with a
firmware version earlier than 2.16.2. The Cisco ATA needs to be upgraded to version 2.16.2 firmware
or greater to use EncryptKeyEx parameter to encrypt its configuration file.
In this scenario, you would follow the same procedure as in Example 1, except that you would need to
set the EncryptKey value to the previously configured EncryptKey value. The difference is that the
ata<macaddress> file is now encrypted with EncryptKey because the Cisco ATA expects the
ata<macaddress> file to be encrypted with EncryptKey. The Cisco ATA can then begin using the
ata<macaddress>.x file that is encrypted with the EncryptKeyEx parameter.

Configuring the Cisco ATA to Obtain its Configuration File from the TFTP Server

This section describes three methods from which to choose how the Cisco ATA contacts the TFTP server
to obtain its configuration file:
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•
Note In the rare instance where no TFTP server is used, you must manually configure the CA0orCM0
parameter to instruct the Cisco ATA about how to register with Cisco CallManager. For this scenario,
see the

Using a DHCP Server

When using a DHCP server, configuration settings vary depending on whether or not the DHCP server
is under the control of the Cisco ATA system administrator or the service provider. The simplest
configuration is when the DHCP server is under the control of the Cisco ATA administrator, in which
case the DHCP server provides the IP address of the TFTP server. Depending on who controls the DHCP
server, follow the applicable configuration procedure:
•
•
This section also includes the topic:
•
Note If no DHCP server is found and the Cisco ATA is programmed to find one, the function button
continues to blink.
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for SCCP (version 3.0)
3-18
Using a DHCP Server, page 3-18
The Cisco ATA contacts the DHCP server, which provides the IP address of the TFTP server
–
The Cisco ATA uses the DHCP server but the DHCP server does not know about TFTP server
–
Without Using a DHCP Server, page 3-21
"CA0orCM0 and CA1orCM1" section on page
Procedure if DHCP Server is Under Control of Cisco ATA Administrator, page 3-19
Procedure if DHCP Server is not Under Control of Cisco ATA Administrator, page 3-20
Other DHCP Options You Can Set, page 3-20
Chapter 3 Configuring the Cisco ATA for SCCP
5-12.
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