Premisys 600, Reference Manual

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7-8 Server Cards
Model No.
Running Head
Inverse Multiplexer (IMUX) Card Settings IMUX Card
DIAL TRIGGER
The Dial Trigger tells the 8213 HSU card when to initiate dialing. (See Dialing with High
Speed Data Cards in the HSU Card chapter.) In order for dialing to be initiated, there must be
a call profile active for this HSU port. The values are n/a (all other HSU cards), off (do not
dial any calls), dtr (dial the active call profile when the DTE raises DTR), rs366 (trigger
dialing on this port when RS366 commands are received on the associated RS366 port) and
v.25b (trigger dialing on this port when V.25bis commands are received on the associated
V.25bis port).
ESCAPE CHARACTER
The Escape Character is the character used by RS366 dialing as a special character to initiate
the dialing command (see next section). The options are: *, #, 5, 6, 7, 9, 0, 00.
IMUX PRIMARY #
The IMUX Primary Number is the main phone number used to route incoming IMUX calls
for this HSU port. This number must be unique throughout all HSU ports in the system. The
number must be within the range of numbers assigned by the carrier controlling the ISDN
switch.
IMUX HUNT #
The IMUX Hunt number is an optional number that makes the port of this HSU part of a hunt
group. The hunt group number is the same for all HSU ports in the hunt group. The system
will route any incoming IMUX call placed to the hunt group number to the first available HSU
port in the group, provided there is an available IMUX engine. A hunt group number must be
within the range of numbers assigned by the carrier controlling the ISDN switch.
IMUX ADD #
The IMUX Additional Number is the second number used to synchronize IMUX bandwidth.
An IMUX call is placed to the primary number which begins to synchronize the call. Part of
that synchronizing process is to report the additional number to the calling IMUX card. The
calling IMUX card then dials the IMUX additional number to set up the rest of the bandwidth
needed before completing the call. If there is no additional number, the IMUX card will
synchronize the call on the primary number only.
It is recommended that an IMUX additional number be obtained from the ISDN carrier to
avoid call collision that could occur if the IMUX additional number is not present.