Support for NXDN reflectors and NXCore

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).

xlxd 2.2.1 interlink now supported on BrandMeister Master Servers

Update: XLX 2.2.2 now fully functional with BrandMeister DMR, including D-Star traffic originating the inter-connected XLX.

The new BrandMeister Master server version 20180116-121244 brings the ability for a master server to establish an interlink with xlxd 2.2.1 . For reflector administrators, one of the major benefits of xlxd 2.2.1 is the ability to handle both D-Star and DMR audio flows with the ability to leverage AMBE transcoding.

When an interlink is established between a BrandMeister TalkGroup and xlxd 2.2.1, it is important to know that xlxd will only perform  D-Star~~DMR AMBE transcoding when sending D-Star audio to the BrandMeister master server. Outbound audio from BrandMeister DMR to the XLX server intended for D-Star traffic is not being AMBE-transcoded by the XLX server.

Below is a technical explanation of the reason. If you are planning to request an interlink, please also take notice of the current xlxd issues.

Continue reading “xlxd 2.2.1 interlink now supported on BrandMeister Master Servers”

It’s BrandMeister 2nd Birthday !

Today, November 24th marks the second birthday of the BrandMeister DMR Network project!

Two years ago, BrandMeister revolutionized DMR HAM Radio by offering a uniform experience: any talkgroup accessible from any repeater or hotspot; the support for private calls; an audio web streaming server for all talkgroups, an easy to use web interface for repeater owners to do their own configuration, an interconnection with c-Bridges, D-Star reflectors, YSF reflectors, and the Wires-X network;  and a convenient wiki documentation.

Since then the core software and the back-end architecture have had several optimizations phases, and the implementation of the latest software technologies to ensure a fast network with high-audio-quality. New and unique feature have been added on a regular basis, such as repeater alerts,  repeater and hotspots passwords, Air Security,  a full APRS/GPS implementation for all common terminals, etc. Continue reading “It’s BrandMeister 2nd Birthday !”