Ericsson ZAT 19.2 Operation Manual page 203

7.4.3 Changing keys
Usually the system operator of the answering modem is
distributing new keys. If USER1 in the example below are going
to change keys, the following can be done:
=> Deliver a new key with index number two to USER1 and seta
deadline for entering the new key.
= Enter the key with index number two when deadline, in the
_ answer modem é and change t the password, USER1 to
By doing this, it i is not | necessary for the two modems to
change key at the same time.
It is necessary to keep an updated list of active keys for
the system operator. You may write it down or file it,
whatever you like. It is necessary to store it in a safe
manner. You may also store the key on a script file, f ex.
procomm.
Example:
'Common key
TRANSMIT "AT+PKO00=123456789ABC DEF0*M"
WAITFOR "OK? M4J"
;Key for user
TRANSMIT "AT+PK01=11223344556677884M"
WAITFOR "OK*M'J"
;Key for user2
TRANSMIT "AT+PK03=33445566778899AA'M"
WAITFOR "OK*M*J"
Zat 14.4/14.4-7 and 19.2/19.2-7