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TANDBERG 3G Gateway User Manual
Interface Configuration
This section configures the PRI or ISDN interface.
PRI CRC-4
Used for most E1-PRI configurations. If your network equipment does not support this feature,
switch off PRI CRC-4.
Bearer capabilities
Within ISDN different bearer capabilities are used to signal the type of data (Voice, Data, H320,
H324M), which is used by switches and other equipment to determine what to do with the data or
the call (compressing voice data neglect etc).
• Incoming: sets the ISDN bearer capability of the incoming 3G calls.
o UDI: In some situations the non correct UDI (Unrestricted Digital Information)
bearer is used in stead of the right H324M capability. This setting makes it
possible to accept incoming 3G calls with UDI bearer signaling.
o ALL: Means that calls independent of their bearer capabilities are accepted. This
makes it even possible to accept audio calls.
• Outgoing: sets the ISDN bearer capability for the outgoing 3G calls.
o H324M: This ITU standardized capability is selected for outgoing calls by default.
o UDI: In some situations the switch does not accept calls which use the correct
H324M capability. This setting makes it possible to use the gateway in these
situations via selecting UDI.
Low Channel
Indicates the lowest numbered E1/T1 B-channel the system is allowed to use for each PRI-line
when selecting channels for outgoing calls. Presently, this setting has no effect.
5.1.2 BRI configuration
To configure the 4 BRI ports, select ‘System Configure - BRI’ as shown in the figure below.
BRI Protocol
Select between the following BRI protocols:
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