2N NetStar Admin manual - Manual (Page 39)

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Tab Expert
Cause mapping – is an additional function for modification of outgoing causes
for a selected virtual port. It may be useful while adapting NetStar causes to the
specific conditions of your network. You can choose a particular internal NetStar
cause in the left–hand column and assign a cause to it to be sent to your network
in the right–hand column.
PRI
Refer to the section for the meaning of the virtual port. Boards
PRI virtual ports are assigned to physical ISDN ports for the Primary Rate Interface.
For the hardware configuration of the PRI virtual ports refer to the
Virtual ports –
menu in the Stack tag. A list of all available PRI virtual ports is displayed on BRI/PRI
the left and a window for the port parameter settings is 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 – the parameter cannot be configured. It 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. A correct function requires a
software–hardware matching and a proper jumper setting for each ISDN 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.
Enabled channels – use the checkboxes to activate the B–channels. If no
channel is checked off, you cannot use this port for communication or data
transmission (it behaves as if busy). B–channels 0 and 16 cannot be used for call
or data transmission under normal circumstances since they are blank. In PCMs
of the 1st order are used for frame synchronisation and signalling transmission.
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 Deactivation timeout item. Any incoming call automatically
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
Settings for SLIP – select to enable acceptable Nonsynchronous as error