Support for NXDN (NX-REF and NXCORE) has been added in the latest version of BrandMeister DMR Master Server. Master server administrators can assist you in setting up a gateway.
Here are important considerations to know about the NXDN implementation.
NXDN protocol
Keep in mind that unlike DMR, the ID numbers on NXDN are limited to a 16-bit value. Everything above 65519 will not be recognized.
BrandMeister Server
BrandMeister does not do any ID translation between DMR<->NXDN :
* When you receive NXDN traffic on BrandMeister, the original NXDN IDs will be showing up as the source and the talkgroup.
* When you transmit on a BrandMeister talkgroup that is bridged with NXDN, only the last 16-bits of your DMR ID will be kept and used as a the source on the NXDN network.
There is also no translation between the two systems Talkgroup IDs. Only Talkgroup numbers between 91 and 65519 are supported.
BrandMeister currently only supports the ICOM implementation of NXDN.
BrandMeister has implemented private calling support for NXDN, but at this point neither NX-REF or NXCORE have implemented this feature on their end.
NXCORE
NXCORE only supports 1 concurrent call (half duplex). This means that if several people are transmitting on a talkgroup connected to an NXcore, only one transmission will go through, and all others will be discarded until the gateway path becomes available.
You will not be able to setup multiple NXCORE on the same server to the same BrandMeister master server (by using different port numbers for example). NXCORE recognizes a BrandMeister master server as a repeater; and NXCORE identify repeaters by IP only (not by ID, not by IP/PORT).