Verilink AS56/56Plus (896-502588-001) Product Manual - Manual (Page 84)

Auxiliary Ports
6-6 AS56 and AS56 Plus User Manual
The Utilities Menu can be used to change the password.
The auxiliary ports depend on RTS from a terminal (or CD from a
modem) to indicate a connected device. Every time that RTS (or CD) is
lowered and subsequently raised, the unit assumes the possibility that a
different terminal has been attached and will again present the user with
the password entry screen.
After selecting a terminal type, the user is presented with a Main Menu on
the CRT screen and is allowed access to all configuration, test and query
functions provided by the Access System 56 unit.