Verilink PRISM 4101 (34-00230) Product Manual - Manual (Page 60)

48 C HAPTER 4: T ERMINAL I NTERFACE
Format / Rate
These fields allow you to set the data format and line rate used between the unit
and the DBU device after connection is established. The Sync format is usually
used with ISDN terminal adapters at 56 kbps or 64 kbps. The Async format is
usually used with standard modems.
The second field allows you to select a dial backup rate of 2.4, 4.8, 9.6, 19.2, 38.4,
or 57.6 kbps. Available rates and formats depend on the type of modem used or if
a terminal adapter is used.
Mode
This field allows you to select the call response mode that the unit will use. If set
to ORIGINATE, the unit initiates a call when needed. If set to ANSWER, it only
answers an incoming call. If set to CALLBACK ORIGINATE, calls the
pre-defined number, issues a password, hangs up and then waits for the other end
to call back. After the password is delivered in the secure mode, the unit is in
ANSWER mode only. If the setting is CALLBACK ANSWER, the unit waits for a
call and password from the CALLBACK ORIGINATE unit.
Dial String#
This field is used to enter the telephone number (up to 30 characters) that the unit
will call. This is a don't care field when the Dial Backup Mode is ANSWER. This
string must include the ATDT command prefix.
Initialization String
The modem initialization string (up to 30 characters) is entered here. See the
modem documentation for further information. The default setting is AT&F.
Disconnection String
Identifies the character string (up to 30 characters) to be output when the modem
session is terminated. The default setting is ATH0.
Reset String (1-5)
This field allows you to enter additional initialization commands to be sent in the
event of a DBU failure. In order to reduce the average DBU connection time,
commands are not sent at every DBU attempt. Consult the external DBU device
manual for further commands.
Activation Periods
This field allows you to select the time of day that the Dial Backup option is
allowed to place a backup call. The selections for these fields are 0 to 24. The
selections can be scrolled through by pressing the space bar. A setting of [00] -
[24] means that the unit will call out anytime there is an alarm condition on the
network. Setting the first field to 8, for a day, and the second field to 17 allows
Dial Backup operations from 8:00 a.m. to 5:00 p.m. of that day. A setting of
[00]-[00], [24]-[24] (or any matching start and end times) will disable DBU for
that day.