Yealink SIP-T48G Administrator's Manual page 65

The common CFG file has a fixed name for each IP phone model. The name of the
Common CFG file for each IP phone model is:
SIP-T48G: y000000000035.cfg

SIP-T46G: y000000000028.cfg

SIP-T42G: y000000000029.cfg

SIP-T41P: y000000000036.cfg

SIP-T40P: y000000000054.cfg

SIP-T29G: y000000000046.cfg

SIP-T27P: y000000000045.cfg

SIP-T23P/G: y000000000044.cfg

SIP-T21(P) E2: y000000000052.cfg

SIP-T19(P) E2: y000000000053.cfg

CP860: y000000000037.cfg

MAC-Oriented CFG file
A MAC-Oriented CFG file contains parameters unique to a particular phone. It will only
be effectual for a specific IP phone. The MAC-Oriented CFG file is named after the MAC
address of the IP phone. For example, if the MAC address of an IP phone is
00156574B150, the name of the MAC-Oriented CFG file must be 00156574b150.cfg
(case-sensitive).
MAC-local CFG file
A MAC-local CFG file contains changes that users make via web user interface and
phone user interface. It will only be effectual for a specific IP phone. The MAC-local CFG
file is named after the MAC address of the IP phone. This file is stored locally on the IP
phone and can also be uploaded to the provisioning server.
Most configurations made by users via web user interface and phone user interface can
be saved to the <MAC>-local.cfg file, but some configurations listed as below are
defined never to be saved to the <MAC>-local.cfg file:
Configurations associated with the password.

For example,
#Configure the password for PPPoE connection. (PPPoE is not applicable to
SIP-T42G/T41P/CP860 IP phones)
network.pppoe.password =
Configurations requiring a reboot during auto provisioning.

For example,
#Configure the IP address mode.
network.ip_address_mode =
Getting Started
45