Aastra 5i Series, Administrator'S Manual

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Network Settings
4-6 41-001160-01, Rev 00, Releaes 2.3
IP Phone Administrator Guide
The table below lists the identifier values for each phone model.
The System administrator can use the Vendor Class Identifier to send the phone a
customized Server Configuration in option 43 (Vendor-Specific information).
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 configuration 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 57i phones to use FTP and the 57i CT
phones to use TFTP from the same server.
Model Identifier Value
9143i AastraIPPhone9143i
9480i AastraIPPhone9480i
9480i CT AastraIPPhone9480iCT
51i AastraIPPhone51i
53i AastraIPPhone53i
55i AastraIPPhone55i
57i AastraIPPhone57i
57i CT AastraIPPhone57iCT
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.