2N NetStar Admin manual - Manual (Page 36)

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3.1 BRI and PRI
BRI
Refer to the section for the meaning of the virtual port. Boards
BRI virtual ports are assigned to physical ISDN ports for the Basic Rate Interface. For
the hardware configuration of BRI virtual ports refer to the
Virtual ports – BRI/PRI
menu in the tag. A list of all BRI virtual ports is displayed on the left and a Stack
window for the port parameter setting is available on the right. The configuration
parameters are divided into logical parts.
Stack status
This field displays information on the stack and its current status including information
on the L1 or L2 states, higher error rates or loss of synchronisation.
Digital interface parameters
Interface type – cannot be selected, only shows the type of interface including
bit rate information.
Interface mode – use this parameter to switch between the NT (Network
Termination) and TE (Terminal Equipment) modes. Some basic unit positions can
only be used in the NT mode. Specifically, they are basic unit board positions 6, 9
and 12 if you follow addressing as described in
. A correct function Boards
requires a software–hardware matching and a proper jumper setting for each
board port. Figure below may serve as a guide.
Do not remove the board from the PBX without prior PBX switching off
or into the service mode to avoid the PBX damage.
Bus mode – use this parameter to switch between the MPT
(point–to–multipoint) and PTP (point–to–point) modes. In the MPT mode you can
connect up to eight terminals to one physical port. The PTP mode is mainly used
for cross–connecting lines (trunks) between PBXs or for one terminal connection.
Enabled channels – use the checkboxes to activate the B–channels. If no
channel is checked off, you cannot use this port for communication (it behaves as
if busy).
Deactivate L1 at relax – use this parameter to deactivate the L1 layer on an
inactive interface. The PBX automatically deactivates the layer after a timeout as
defined in the
item. Any incoming call automatically Deactivation timeout
reactivates this layer.
Keep L1 active – check this option to make the PBX keep L1 active on this
interface without any incoming call. This option cannot be combined with the
option. Deactivate L1 at relax
Inactive L1 as error – use this option to activate a caution about the first layer
being inactive. This is indicated by a red exclamation mark on the port in the
menu and a red text in the upper stack status field. This Hardware – Boards
option may not combined with the option. Deactivate L1 at relax
Set SLIP – select to enable acceptable SLIP range Nonsynchronous as error
parameters. Use this option in the TE mode only. If the SLIP rate gets over the