TANDBERG 3G Gateway User Manual
ETSI (Euro ISDN)
National ISDN
AT&T Custom
Japan/Taiwan ISDN
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.
oUDI: 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.
oALL: 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.
oH324M: This ITU standardized capability is selected for outgoing calls by default.
oUDI: 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.
Note that it is not possible to configure ISDN BRI lines for special functions like dial out only. The gateway will automatically select a free BRI line for H323 to 3G calls and possibly block a DiD or an IVR menu when the BRI lines have different numbers. It is therefore strongly recommended that all ISDN BRI lines have the same number range. Contact your ISDN or telecom supplier about numbering plans of ISDN lines.
31