2N PBX 2N NetStar - Configuration Manual v2.6.0 - Manual (Page 22)

BRI and PRI virtual ports 3.1
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3 Virtual ports
3.1 BRI and PRI virtual ports
3.1.1 BRI virtual port
BRI carriers are assigned to physic ports of ISDN boards for Basic Rate Interface. Hardware
configuration of BRI carriers you can find in the menu Virtual ports – BRI/PRI on the tab Stack.
On the left side is displayed list of all BRI carriers and on the right side of this menu you can set up
parameters of selected carrier. Whole configuration is divided into logical parts.
Stack status
This field displays information about stack and its actual state. You can find here information about
states of L1 or L2 and about higher error rate or loss of synchronization.
Digital interface parameters
Interface type – Parameter can't be set. It shows onlz tzpe of interface including information about
bit rate.
Interface mode – With this parameter you can switch between NT (Network Termination) and TE
(Terminal Equipment) mode. Some positions in main case can be used only in NT mode. Concretely it
is firts and second port on BRI boards on positions 6, 10 and 14 if you follow addressing from chapter
2.2 Boards part Addressing. For correct function it is necessary to adjust software and hardware
configuration and set jumpers for each port on board correctly. As guide you can use figure 1 or
picture which is on each board.
Bus mode – With this parameter you can switch between MPT (point-to-multipoint) and PTP (point-
to-point) mode. In MPT mode you can connect up to eight terminals to one physic port. PTP mode is
used mainly for trunks between two PbXs or when you want to connect only one equipment to each
physic port.
Enabled channels – Checkboxes of this parameter are used for activation of B-channels. If no
channel is checked, you aren't able to use this port for communication (it behaves as busy).
Deactivate L1 – Parameter is used for L1 deactivation on interface without calls. Layer is
automatically deactivated by PbX after timeout expiration. Incoming call automatically activates this
layer.
Keep L1 active – When this option is checked, PbX always try to keep L1 active on this interface and
you don't need to activate interface by additional calls. This option can't be combined with option
Deactivate L1.
Inactive L1 as error – With this option you can activate caution about inactive first layer. Caution is
made by red exclamation on the port within menu Hardware – Boards and by red text in the field
for stact status. This option can't be combined with option Deactivate L1.
Settings for SLIP – With parameter Nonsynchronous as error you can enable another
parameters for setting SLIP range. This option can be used only on TE port. If SLIP rate gets over
upper level, is this fact signalized by red exclamation on the port within menu Hardware – Boards
and by red text in the field for stact status. For changing status of nonsynchronous line must SLIP
rate go under lower level. Interval between these two values is used as hysteresis.
Settings for BER – With parameter BER as error you can enable another parameters for setting
BER range. If BER rate gets over upper level, is this fact signalized by red exclamation on the port
within menu Hardware – Boards and by red text in the field for stact status. For changing status of