User Manual

Getting Started

CFG file is named after the MAC address of the IP phone. For example, if the MAC

address of a SIP-T22P IP phone is 001565113af8, names of these two configuration files

must be: y000000000005.cfg and 001565113af8.cfg.

The name of the Common CFG file for each IP phone model is:

 SIP-T28P: y000000000000.cfg

 SIP-T26P: y000000000004.cfg

 SIP-T22P: y000000000005.cfg

 SIP-T21P: y000000000034.cfg

 SIP-T20P: y000000000007.cfg

 SIP-T19P: y000000000031.cfg

In order to deploy IP phones using the configuration files (<y0000000000xx>.cfg and

<MAC>.cfg), you need to use a text-based editing application to edit configuration

files, and store configuration files to a provisioning server. IP phones support

downloading configuration files using any of the following protocols: FTP, TFTP, HTTP and

HTTPS.

IP phones can obtain the address of the provisioning server during startup through one

of the following processes: Zero Touch, PnP, DHCP Options and Phone Flash. Then IP

phones download configuration files from the provisioning server, resolve and update

the configurations written in configuration files. This entire process is called auto

provisioning. For more information on auto provisioning, refer to

Yealink_SIP-T2

Series_T19P_T4_Series_IP_Phones_Auto_Provisioning_Guide

When modifying parameters, learn the following:

 Parameters in configuration files override those stored in the IP phone’s flash

memory.

 The .cfg extension of 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.

- Set only one variable per line.

- Put the variable and value on the same line, and do not break the line.

- Comment the variable on a separated line. Use the pound (#) delimiter to

distinguish the comments.

IP phones can accept two sources of configuration data:

 Downloaded from configuration files

 Changed on the phone user interface or the web user interface