2N NetStar Admin manual - Manual (Page 40)

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SLIP range parameters. Use this option in the TE mode only. If the SLIP rate gets
over the
level, a red exclamation mark appears on the port in the upper
menu and a red text is displayed in the upper stack status Hardware – Boards
field. This error status gets changed after the SLIP rate falls below the lower
level. The interval between these two values represents hysteresis.
Settings for BER – select
to enable acceptable BER range BER as error
parameters. If the BER rate gets over the level, a red exclamation mark upper
appears on the port in the menu and a red text is displayed Hardware – Boards
in the upper stack status field. This error status gets changed after the BER rate
value falls below the
level. The interval between these two values lower
represents hysteresis. The BER values are entered in an exponential format (e.g.
3e–5 means 3 errors in 100,000 bits). In practice, the BER may occur on a
virtual port close after the cable connection. In that case, this is not an error if
the BER disappears in a few minutes.
Figure: View of ISDN PRI Board Jumper Configuration (The thick line represents the
board front)
Specific interface parameters
Prefer CRC – use this option to enable preferring communication with the Cyclic
Redundancy Check. In this mode, the PBX tries to establish connection with the
CRC at first and, having failed, attempts to establish connection without the CRC.
Long haul – use this parameter to activate an extended bus called the Long
Haul. With just one terminal and holding impedance, you can extend the distance
up to 1,000 metres. This parameter can be set only on an NT port.