8
Default Basic Dial Code on Asterisk
Voice Mail
（
My Voicemail
）
*97
Pickup a call
**
Intercom *80
Use DHCP Option 66 to update firmware massively via FTP
In this way, there’s no need to configure at the phones.
①
Specify an address(TFTP) for Option 66 in your DHCP Server
②
Prepare a CFG file as below
③
For T28, name the CFG file by y000000000000.cfg and put it to TFTP server
For T26, name the CFG file by y000000000004.cfg and put it to TFTP server
For T22, name the CFG file by y000000000005.cfg and put it to TFTP server
For T20, name the CFG file by y000000000007.cfg and put it to TFTP server
④
Put the firmware to the FTP Server
⑤
Power on the phones and they will download and update the firmware via FTP
Use DHCP Option 66 to update firmware massively via TFTP
In this way, there’s no need to configure at the phones.
①
Specify an address(TFTP) for Option 66 in your DHCP Server
[ firmware ]
path = /tmp/download.cfg
server_type = ftp
server_ip = 10.1.4.42
server_port = 21
login_name = admin
login_pswd = 123456
firmware_name = 2.2.0.0.rom
TFTP Server address
in Option 66
FTP Server
Login name &
password for FTP
Firmware name
