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Snom M200 SC Base Station Manual

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M200SC Administrator and Provisioning Manual Provisioning using configuration files
Configuration File Tips and Security
All configuration settings are initially stored in a configuration template file. Copy, rename, and edit the
template file to create a general configuration file and the MAC-specific configuration files you will need. You
can store the general configuration file and the MAC-specific files on your provisioning server.
Do not modify the configuration file header line that includes the model and firmware version.
To save yourself time and eort, consider which settings will be common to all (or the majority of) M200SC base
stations. Such settings might include call settings, language, and NAT settings. You can then edit those settings
in the configuration template and save it as the general configuration file. The remaining settings will make up
the MAC-specific configuration file, which you will have to copy and edit for each M200SC.
Guidelines for the MAC-Specific configuration file
The M200SC downloads the MAC-specific configuration file after the general configuration file. You must create
a MAC-specific configuration file for each M200SC in your system. The file name must contain the M200SC MAC
address, which is printed on a label on the bottom of the device. For example, an M200SC base station with the
MAC address of 00:11:A0:10:6F:2D would download the M200SC_0011A0106F2D.cfg file.
Note: When renaming a MAC-specific configuration file, ensure the file name is all upper case.
The MAC-specific configuration file contains settings intended exclusively for that M200SC base station. Such
settings will include SIP account settings such as display name, user ID, and authentication ID.
Securing configuration files with AES encryption
You can encrypt your configuration files to prevent unauthorized users modifying the configuration files. The
M200SC firmware decrypts files using the AES 256 algorithm. After encrypting a file and placing it on your
provisioning server, you can enable the M200SC to decrypt the file after fetching it from the server.
The procedures in this section use OpenSSL for Windows for file encryption, as shown in Figure 2.
To decrypt a configuration file, you will need a 16-character AES key that you specified when you encrypted the
file. The key (or passphrase) is limited to 16 characters in length and supports special characters ~ ^ ` % ! & - _
+ = | . @ * : ; , ? ( ) [ ] { } < > / \ # as well as spaces.
Note: The encryption of configuration files is supported only for the auto provisioning process.
Encrypt files only if you intend to store them on a provisioning server. Do not encrypt
files that you intend to manually import to the M200SC. You cannot enable decryption for
manually imported configuration files.
Encrypting a configuration file:
1. (Optional) Place your configuration file in the same folder as the openssl executable file. If the configuration
file is not in the same folder as the openssl executable file, you can enter a relative pathname for the [infile]
in the next step.
2. Double-click the openssl.exe file.
3. On the openssl command line (Fig. 1, below), type:
enc-aes-256-cbc-passpass:[passphrase123456]-in[inle]-out[outle]
-nosalt-p
Note: Elements in brackets are examples; do not enter the brackets. Enter a 16-character
passphrase and the filename of the unencrypted configuration file (the “infile”) and a name for
the encrypted file (“outfile”) that will result.
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