I need to use DHCP option 43 for Voip.

I have Alcatel phones and i want to put them on a specific subnet with the
option 60 67 and 43.

My problems come with the 43 option. Alcatel tell me to put a passphrase as
value for this option. The passphrase is: "alcatel.a44000.0"

This passphrase is used to fill the 43 option on Microsoft DHCP servers but
the NetWare DHCP wait an hexadecimal value divided in 2 fields (Key and
Data) and i doesn't know what are the values that i'm suppose to put on
those fields.

Is there someone who can give me some things about this problem ?