Telephone Accessories User Manual
3-9
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)
OL-3410-01
Chapter 3 Configuring the Cisco ATA for SIP
Configuring the Cisco ATA Using a TFTP Server
The settings in this example indicate that a group of Cisco ATAs is using the TFTP server with an IP 
address of 10.10.10.1 to obtain their configuration files. These Cisco ATAs will use a DHCP server to 
obtain their own IP addresses but not to obtain the TFTP server IP address (because the TftpURL 
parameter has a configured value). 
Step 3 Save your changes.
Step 4 Use the example_uprofile.txt file again, this time as a template for creating a text file of values that are 
specific to one Cisco ATA. For example, you might configure the following parameters:
UserID:8530709
GkorProxy:192.168.1.1
Save this file of Cisco ATA-specific parameters as:
ata<macaddress>.txt
where macaddress is the non-dotted hexadecimal version of the MAC address of the Cisco ATA you are 
configuring. This non-dotted hexadecimal MAC address is labeled on the bottom of most Cisco ATAs 
next to the word “MAC.” The file name must be exactly 15 characters long. (However, if this filename 
is supplied by the DHCP server, the name can be as long as 31 characters and can be any name with 
printable ASCII characters.) 
If necessary, you can obtain the non-dotted hexadecimal MAC address by using the atapname.exe 
command. For information on using the atapname.exe command, see the “Using atapname.exe Tool to 
Obtain MAC Address” section on page 3-10. That section includes an example of a dotted decimal MAC 
address and its corresponding non-dotted hexadecimal address.
Note The ata<macaddress>.txt file should contain only those parameters whose values are different 
from the file of common parameters. Parameter values in the ata<macaddress> configuration 
file will overwrite any manually configured values (values configured through the web or voice 
configuration menu) when the Cisco ATA powers up or refreshes.
Step 5 On the top line of the ata<macaddress>.txt file, add an include command to include the name of the 
common-parameters file, and save the file.
include:common.txt
UserID:8530709
GkorProxy:192.168.1.1
Step 6 Run the cfgfmt.exe tool, which is bundled with the Cisco ATA software, on the ata<macaddress>.txt 
text file to generate the binary configuration file. If you wish to encrypt the binary file for security 
reasons, see the “Using the EncryptKey Parameter and cfgfmt Tool” section on page 3-11.
The syntax of the cfgfmt program follows:
Syntax
cfgfmt [-eRC4Password] -tpTagFile input-text-file output-binary-file
–
-eRC4Password is the optional RC 4key to encrypt the binary TFTP file provided by the 
cfgfmt program (up to eight alphanumeric characters).
–
pTagFile is the command used to specify the ptag.dat file that is provided with the 
Cisco ATA software version you are running. Search on the keyword ptag to find the complete 
name of the ptag file that is included with the Cisco ATA software for the signaling protocol 
you are using. Be sure this file resides in the same directory from which you are running the 
cfgfmt program. The ptag.dat file is used by cfgfmt.exe to format a text input representation of 
the parameter/value pairs to its output binary representation.










