You can use this connector to connect to a network which supports the Dplus protocol like REF or XRF.
The easiest way is to use the Quick setup to connect to these networks.
If you want to use a reflector, set the URCALL on your radio to CQCQCQ, and the local module to D in the openSPOT2. If you want to use a gateway, set the URCALL to the gateway's callsign and remote module. Remote module should be the last character of the URCALL. In this case, set the local module to a space character in the openSPOT2.
Note that if you are connecting to a repeater, you have to set the Reflector/gateway ID connector setting to the callsign of the repeater.
REF and XRF servers need a valid D-STAR registration. You can check your callsign's registration by clicking on the Check D-STAR registration button. Make sure you have registered your local module on the D-STAR gateway registration system. If you have a registration, you have probably registered the "space" local module, in this case set your openSPOT2's local module to a space (empty) character.
Try remote module E on any reflector for the REF/XRF echo service (may not enabled on some servers).
Switching reflectors/gateways using your radio
URCALL/your call method
You can switch reflectors using your radio by starting a short call to their names as the destination callsign (URCALL), like REF001 A, or XRF001 A. Set the desired remote module as the last character of the URCALL. You can switch to gateways the same way. You can also switch to DCS/XLX servers by this method. Switching to DCS/XLX servers this way changes the openSPOT2's active connector to the DCS/XLX connector.
Here are some example DTMF command sequences:
Switching to REF servers:
*001Cconnects to REF001 module C.
Switching to XRF servers:
B008Bconnects to XRF008 module B.
Switching to XLX servers:
C0502will change the active connector to the DCS/XLX connector and connects to XLX005 module B.
C0904will change the active connector to the DCS/XLX connector and connects to XLX009 module D.
Switching to DCS servers:
D0501will change the active connector to the DCS/XLX connector and connects to DCS005 module A.
D0103will change the active connector to the DCS/XLX connector and connects to DCS001 module C.
The openSPOT2 will automatically set the local module to a space character if you are switching to a gateway, and to local module D if you are switching to a reflector using your radio.
As the openSPOT2 is designed to be always connected, the unlink (U) command is not interpreted. If you really want to disconnect, you can switch to a config profile which has the Null connector activated.