IP Phone Release Notes 2.3

New Features in Release 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.

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.

Configuring DHCP Option Override via the Configuration Files

Use the following parameter to configure DHCP option override on the IP Phones.

Parameter

Configuration Files

aastra.cfg, <mac>.cfg

dhcp config option

IP Phone UI

Options->Administrator Menu->

override

 

Network Settings->DHCP Settings->

 

 

Option Override

DHCP Option Override

Aastra Web UI

Advanced Settings->Network->

(in Web UI)

 

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

 

 

 

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RN-001029-02, Release 2.3, Rev 00

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Aastra Telecom CT9143i manual Dhcp Options 159 and 160 for the Configuration Server