TANDBERG 8000 MXP User Manual page 104

TANDBERG 8000 MXP User Manual
4.8.1.2.2 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
ATT 4 AT&T
ESS AT&T/Lucent
ATT 5 Northern
ESS Telecom
DMS 100 Telecom
DMS 250 Northern
* Settings will depend on configuration of the switch. PRI Switch Type is not changed when
Restoring Defaults.
4.8.1.2.3 Channel Hunting
Max Channels Maximum number of channels the system may use at any given
time.
Low The lowest numbered B-channel that may be used by the system
Channel when selecting channels for outgoing calls.
High Channel The highest numbered B-channel that may be used by the system
when selecting channels for outgoing calls.
Search
Specifies where the system will start searching for available B-
channels for outgoing calls.
Example:
Channel hunting is normally used in conjunction with PRI daisy chaining with TANDBERG
systems in the daisy chain. If only TANDBERG systems are used in the daisy chain,
default setting should be used, as these systems will find available B-channels
automatically.
Max Channels may be used for PRIs that are provisioned for a lower number of channels.
Max Channels may be used as mechanism to ensure that there is bandwidth available to
systems further down the chain when Daisy-Chaining.
High Channel, Low Channel and Search may be used for PRIs provisioned with specific
requirements for B-channel usage.
In the example above, the system will start searching for available B-channels at channel 20,
since Search is set to High and High Channel is set to 20. The system will not search for
channels below 10, since Low Channel is set to 10. Furthermore if the user tries to make an 8
channel call, the call will be established with 6 channel, since Max Channels is set to 6.
100
PRI Switch Type setting
AT&T ISDN
AT&T ISDN or National ISDN*
National ISDN
National ISDN