2.5 Types of 2N® BRI Enterprise Connection
This subsection deals with the types of connection of the 2N® BRI Enterprise gateway to the main ISDN BRI extension.
ISDN TE – 2N® BRI Enterprise Connection
The connection type shown in the figure below provides communication via a GSM/UMTS gateway without PSTN connection. The ISDN telephone sets are connected to the NT port of the GSM gateway, while a mains adapter simulating power supply from the PSTN is connected to the TE port. The adapter is available under Part No. 5020002.
2N® BRI Enterprise Point-to-Point Connection
This type of connection is especially suitable for direct calls from an ISDN branch network to a GSM/UMTS network.
Another possible connection type is NT, where gateway synchronisation is derived from the PSTN BRI extension.
With multiple GSM gateways, the connection lay-out is as follows:
2N® BRI Enterprise Connection as DialThru Router
This type of connection saves one BRI port to the PBX. Incoming PSTN calls are treated by the GSM/UMTS gateway in the DialThru mode while outgoing calls are routed according to the LCR table.
The figure below shows the gateway as a DialThru router for the Point-to-Multipoint extension. Calls are routed automatically into GSM, UMTS or ISDN based on the internal LCR rules.
