No. There is a password reset function built-in; you need to be physically on-site and have installation media; IE, prove that you own the PBX or are allowed to have physical access. The below is publicly available from the NTP for a 5.0 system:
Password reset
Use the procedures in this section to reset passwords on the call server,
or on other devices. You must have the applicable software install media
(floppy disk or flash card) on hand, and must insert it only when prompted to
do so during the password reset procedure.
Use the following procedure to reset an individual password on the call
server, and lock out all other accounts. To protect against unauthorized
use, Nortel has deliberately designed the password reset mechanism to
require the user to be physically present in the switchroom to complete the procedure. The system also logs each attempt to reset a password. The
system password reset procedure described in this section replaces all
previously available methods of password override or password reset.
Procedure 85
Resetting call server passwords by using the CLI
Step Action
1 Log on to the call server CLI using an account that has PDT privilege.
2 Access the PDT prompt by holding down the ctrl key, and typing
pdt.
The PDT prompt appears.
3 Instead of entering a user name, enter resetPWD.
The Password Reset Mechanism is initiated, and the following
message appears:
PDT login on /tyCo/0
Username: resetPWD
*************************************************
* WARNING: All attempts to use the Password Reset
Mechanism *
* are logged. In order to proceed, you will need
*
* physical access to the Call Server. *
************************************************
If you do not wish to proceed, enter the word
QUIT, otherwise
enter the PWD2/Admin2 userID:
SEC026 Password override mechanism was used to
gain access to the switch
4 Enter either:
QUIT to exit without resetting any passwords,
OR
<user name>.
If the user name you enter exists on the system, it is the target of
the password reset. If the user name you enter does not exist on the
system, a new PWD2 level account is created.
5 When prompted, insert the install media in the disk drive or PC
Card slot. You must complete this step within 60 seconds, or the
Password Reset Mechanism cancels.
6 Press Enter.
7 Enter the new PWD2 password.
8 Reenter the new PWD2 password.
9 To exit PDT mode, type exit, and press Enter twice.
10 Remove the install media from the drive.
The system changes the password for the account (or creates a
new account and assigns it the new password) and locks out all
other accounts. The system marks the new password as expired,
so the user must change it on their next log on. If the account is
locked because the user exceeded the Failed Log in Threshold, the
system unlocks it.
These changes are distributed the next time an EDD takes place,
usually within 24 hours. To force an immediate EDD, see "Force an
EDD using overlays" (page 300).
If you need assistance byond that, you're best to get a vendor who is familiar with PDT to assist.
Matthew - Technical Support Engineer Sr.