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C H A P T E R
3
C O N F I G U R I N G
V 1 0 0
may not be used. The configuration fields for HSC on the SYSTEM SETTINGS menu are automatically
removed and replaced by two alternative fields, which configure the TDM clocking: The "TDM MODE" field
allows the selection of the electrical interface type used on the TDM card, while the "TDM TXC" field
defines the transmit clock source.
OPTION 0
This field is used to specify the Special Option Card in use, if any. Selection from "NONE", "TDM", "E1" or
"ISDN" is used during the initialisation of the unit.
PASSWORDS
The RW and RO passwords allow the user to enter personal codes to restrict supervisor access to Read-
Write or Read-Only. In both cases, the code must be followed by a carriage return and then entered a
second time for confirmation. The new password is saved when the screen is exited in the normal way.
Once a password is entered, the user is prompted to enter it when first logging on to the system before
any access is granted to the menus. Refer to section 3.3.5 for details.
ACCESS TIMEOUT
As an additional security feature, if either an RW or an RO password has been set, the "ACCESS
TIMEOUT" parameter allows the user to specify a period of keyboard inactivity after which menu access is
denied. When this happens, the user is logged off and the following message is displayed:
Password Access Expired....
Re-Enter Password for Node0:
This feature can be turned off by entering a value of zero seconds.
ACTVITY TIMEOUT
The "ACTIVITY TIMEOUT" is relevant to dial-up links only. When configured, it sets the aggregate dial-up
link's activity timeout period. After the specified period of inactivity the dial-up link is dropped.
This feature can be turned off by entering a value of PERMANENT.
TDM SYNC BACKUP
TDM SYNC BACKUP is ONLY displayed if a TDM card is inserted. Values are 'OFF', 'ON'
OFF = default and maintains its ability to operate in simplex mode of operation. BackUp mode cannot be
used.
V100 Versatile Multiplexer Technical Manual Version 2.2
Page 49 of 231
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