Aastra Telecom 41-001343-02 manual Using Option 43 to Customize the IP Phone

Network Settings

Model	Identifier Value
6739i	AastraIPPhone6739i
6753i	AastraIPPhone53i
6755i	AastraIPPhone55i
6757i	AastraIPPhone57i
6757i CT	AastraIPPhone57iCT
6863i	AastraIPPhone63i
6865i	AastraIPPhone65i
6867i	AastraIPPhone67i

Option 43 consists of the following sub-options:

Sub-Option/Code	Description
02	Configuration server (protocol, server, and path).
03	Redirection and Configuration Server (RCS) enable/disable.
08	ID string to enable the use of the VLAN identity in sub-option/code 09. Must be specified to avoid conflict with
	other vendors.
09	VLAN ID value.

The System administrator can use the Vendor Class Identifier to send the phone a customized Server Configuration in option 43 (Vendor-Specific information).

Note:

If Aastra IP Phones receive the server configuration from both DHCP Option 66 and DHCP Option 43, then Option 43 takes precedence over Option 66.

Using Option 43 to Customize the IP Phone

A System Administrator can customize the IP Phone(s) in the network by entering a text string in the phone’s configura- tion files. The following is an Option 43 example using Linux.

On the startup of the phones, when the DHCP server receives the request with the information in this example, it allows the 6757i phones to use FTP and the 6757i CT phones to use TFTP from the same server.

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