Aastra Telecom CT9143i - Manual (Page 16)

New Features in Release 2.3
12 RN-001029-02, Release 2.3, Rev 00
IP Phone Release Notes 2.3
DHCP Options 159 and 160 for the Configuration Server
In addition to DHCP options 43 and 66 already supports on the IP Phones for setting the
configuration server, Release 2.3 provides new DHCP Options 159 and 160. The IP Phones now
use the following order of precedence when deriving the configuration server parameters: 43,
160, 159, 66.
In addition, an administrator can override this order of precedence by setting a configuration
parameter called, dhcp config option override. You can set this parameter via the configuration
files, IP Phone UI, or the Aastra Web UI. Setting this parameter results in the phone only using
the chosen DHCP option and ignoring the other options
.
Configuring DHCP Option Override via the Configuration Files
Use the following parameter to configure DHCP option override on the IP Phones.
Warning: Administrators should review the updated IP phone DHCP
option precedence order and configuration options to avoid potential
impact to existing Aastra IP phone deployments.
Parameter–
dhcp config option
override
DHCP Option Override
(in Web UI)
Configuration Files aastra.cfg, <mac>.cfg
IP Phone UI Options->Administrator Menu->
Network Settings->DHCP Settings->
Option Override
Aastra Web UI Advanced Settings->Network->
Advanced Network Settings
Description The value specified for this parameter overrides the precedence order for
determining a configuration server.
Note: You must restart the IP Phone for this parameter to take affect.
Format Integer
Default Value 0 (None - no override - uses normal precedence order of 43, 160, 159, 66 )
Range 0
43
66
159
160
Example dhcp config option override: 66