Configuration Files - Yealink SIP-T2xP Administration Manual

Administrator's Guide for SIP-T2xP IP Phones
An administrator can configure the IP phone using the configuration files. There are two
configuration files both of which are CFG format. We call them Common CFG file and
MAC-Oriented CFG file. A Common CFG file will be effectual for all IP phones of the
same model. However, a MAC-Oriented CFG file will only be effectual for the specific IP
phone. The common CFG file has a fixed name for each phone model, while the
MAC-Oriented CFG file is named with the MAC address of the IP phone. For example, a
SIP-T22P IP phone whose MAC address is 001565113af8, the two configuration files must
be: y000000000005.cfg and 001565113af8.cfg.
The name of the Common CFG file for each SIP-T2xP IP phone model is:
SIP-T28P: y000000000000.cfg
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SIP-T26P: y000000000004.cfg
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SIP-T22P: y000000000005.cfg
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SIP-T20P: y000000000007.cfg
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In order to configure the IP phone using the configuration files (<y0000000000xx>.cfg
and <MAC>.cfg), you need to use a text-based editing application to edit the
configuration files, and store the configuration files to the root directory of a
configuration server. The IP phone supports downloading the configuration files using
any of the following protocols: FTP , TFTP , HTTP and HTTPS. You can configure the type of
configuration server.
The IP phone gets the address of the configuration server during startup through any of
the following processes: Zero Touch, PnP , DHCP Option and Phone Flash. Then the IP
phone downloads the configuration files from the configuration server, resolves and
applies the configurations written in the configuration files. This entire process is called
Auto Provisioning. For more information on auto provisioning, refer to the document
―Yealink Auto Provisioning User Guide‖.
When modifying parameters, remember the following:
Parameters in the configuration files override those stored in the phone's flash

memory.
The .cfg extension of the configuration files must be in lowercase.

Each line in a configuration file must use the following format and adhere to the

following rules:
variable-name = value
- Associate only one value with one variable.
Separate variable name and value with equal sign.
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- Set only one variable per line.
Put the variable and value on the same line, and do not break the line.
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