Specifications

5-6
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for SCCP (version 3.0)
OL-4652-01
Chapter 5 Parameters and Defaults
Parameters for Configuration Method and Encryption
Default
0
Use the default if you have one of the following scenarios:
• You do not have an alternate TFTP server to configure.
• You have an alternate TFTP server but wish to configure this server by using the second value in
DHCP option 150 and not by means of the AltTftpURL parameter.
Voice Configuration Menu Access Code
935
Related Parameters
• UseTFTP, page 5-4
• Domain, page 5-15
• TftpURL, page 5-4
EncryptKey
Description
This parameter specifies the encryption key that is used to encrypt the Cisco ATA configuration file on
the TFTP server.
The cfgfmt tool, which is used to create a Cisco ATA binary configuration file (see the “Using
Encryption With the cfgfmt Tool” section on page 3-13), automatically encrypts the binary file when the
EncryptKey parameter has a value other than 0. The cfgfmt tool uses the rc4 encryption algorithm.
If this parameter value is set to 0, the Cisco ATA configuration file on the TFTP server is not encrypted.
Note Cisco recommends using the stronger Cisco ATA encryption method, which requires the use of the
EncryptKeyEx parameter. For more information, see the “EncryptKeyEx” section on page 5-7.
For examples on how to upgrade from the EncryptKey parameter to the stronger encryption method that
uses the EncryptKeyEx parameter, see the
“Examples of Upgrading to Stronger Encryption Key” section
on page 3-16.
Value Type
Hexadecimal string
Range
Maximum number of characters: 8
Default
0
Voice Configuration Menu Access Code
320