Getting Started
35
3.
Select firmware from the local system.
4.
Click Upgrade.
A dialog box pops up to prompt “Firmware of the SIP Phone will be updated. It will take
5 minutes to complete. Please don't power off!”.
5.
Click OK to confirm the upgrade.
Note
Upgrade Firmware from the Provisioning Server
IP phones support using FTP, TFTP, HTTP and HTTPS protocols to download configuration
files and firmware from the provisioning server, and then upgrade firmware
automatically.
IP phones can download firmware stored on the provisioning server in one of two ways:
Check for configuration files and then download firmware during startup.
Automatically check for configuration files and then download firmware at a fixed
interval or specific time.
Method of checking for configuration files is configurable.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configuration File
<y0000000000xx>.cfg
Configure the way for the IP
phone to check for
configuration files.
Specify the access URL of
Do not close and refresh the browser when the IP phone is upgrading firmware via web
user interface.
Summary of Contents for Yealink SIP-T28P
Page 1: ......
Page 28: ...Administrator s Guide for SIP T2xP and SIP T19P IP Phones 12 ...
Page 76: ...Administrator s Guide for SIP T2xP and SIP T19P IP Phones 60 ...
Page 226: ...Administrator s Guide for SIP T2xP and SIP T19P IP Phones 210 ...
Page 238: ...Administrator s Guide for SIP T2xP and SIP T19P IP Phones 222 ...
Page 253: ...Configuring Security Features 237 ...
Page 265: ...Resource Files 249 ...
Page 279: ...Troubleshooting 263 ...