TANDBERG 8000 MXP
192

4.8.1.2 ISDN-PRI Settings

To make sure your system will work properly using ISDN-PRI, configure the follo wing
settings:
1. Set PRI switch type
2. Enter PRI line number
Note that the T1 format is predefined to ESF and the line code is B8ZS. This is not configurable.

Number Range

Enter the range of numbers for your PRI line. If this number is programmed and MSN: On (see
Validate numbers in Advanced ISDN Settings) only calls to this number will be answered.

ISDN PRI Switch Type

Select the type of PRI switch to which your system is connected.
Below is a list of common ISDN-PRI/T1 switches.

Type Manufacturer PRI Switch Type setting
ATT 4 ESS
ATT 5 ESS
DMS 100
DMS 250
AT&T
AT&T/Lucent
Northern
Telecom
Telecom
Northern
AT&T ISDN
AT&T ISDN or National ISDN*
National ISDN
National ISDN
* Settings will depend on configuration of the switch. PRI Switch T y pe is not changed when
Restoring Defaults.

Channel Hunting

Max Channels Maximum number of channels the system may use at any given time.
Low
Channel
The lowest numbered B-channel that may be used by the system when
selecting channel s for outgoing calls.
High Channel The highest numbered B-channel that may be used b y the system when
selecting channel s for outgoing calls.
Search Specifies where the system will start searching for available B-channels
for outgoing calls.