if i'm not mistaken, only an opt 11c has a "dongle" ??
is this what you need?
Set system ID
Each Meridian 1 system has a unique system ID number (SID) selected from 0000 to 9999. The 4-digit ID number can be printed or set by the following commands.
To print the current SID: TSID sid
To change the SID: SSID sid -- SID
or is it the info that appears when you do:
>ld 22
tid
-> if this is the case, you might need keycodes to change it. be careful though if you have mermail, as it needs to match the system id.
good luck!