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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SCCP)
OL-3141-01
Chapter 3 Configuring the Cisco ATA for SCCP
Configuring the Cisco ATA Using a TFTP Server
Note If no DHCP server is found and the Cisco ATA is programmed to find one, the function button
continues to blink.
Procedure if DHCP Server is Under Control of Cisco ATA Administrator
Procedure
Step 1 On the DHCP server, set one of the following two options:
• DHCP option 150 (TFTP server IP address)
• Standard DHCP option 66 (TFTP server name)
If you use DHCP option 150, the Cisco ATA will ignore DHCP option 66. However, if you use DHCP
option 66, you must turn off DHCP option 150 or set its value to 0.
Note You can turn off the DHCP option 150 request by using the Cisco ATA OpFlags parameter (see
the “OpFlags” section on page 5-17).
Step 2 Make sure to use default values for the following Cisco ATA parameters:
• TFTPUrl=0
• UseTFTP=1
• DHCP=1
• CA0orCM0=0
This completes the parameter settings and DHCP options you need to configure for this procedure. The
Cisco ATA will contact the DHCP server for the IP address of the TFTP server that contains the
Cisco ATA configuration file.
Procedure if DHCP Server is not Under Control of Cisco ATA Administrator
This is the procedure to use if the DHCP server is not under the control of the Cisco ATA administrator,
which means that the URL of the TFTP server must be manually configured.
Procedure
Step 1 Using the voice configuration menu, set the parameter TftpURL to the IP address or URL of the TFTP
server. For more information on setting the TftpURL parameter, see the “TftpURL” section on page 5-4.
For information about using the Cisco ATA voice configuration menu, see the “Voice Configuration
Menu” section on page 3-18.
Note If you are not using a DHCP server to provide the TFTP server location, you must manually
configure the TftfURL. You can do this by using the voice configuration menu without first
obtaining network connectivity for the Cisco ATA. If you want to configure this value using the
Web configuration page, you first must obtain network connectivity by using the voice
configuration menu to statically configure IP address information (see the “Voice Configuration
Menu” section on page 3-18).