Ping

ISS: Information Sending Station

IRS: Information Receiving Station

A ping frame, for "pinging" the other station, to see if a connection could be possible. Will be acknowledged by a ping ack frame.

ISS->IRS:Ping frame IRS->ISS:Ping ACK

Ping Frame

frametype IRS callsign CRC ISS callsign CRC ISS full callsign empty empty empty
1 Byte 2Bytes 2 Bytes 6 Bytes - - -
60 CRC16 CRC16 Callsign as str - - -

Ping ACK

frametype IRS callsign CRC ISS callsign CRC IRS gridsquare empty empty empty
1 Byte 2Bytes 2 Bytes 6 Bytes - - -
61 CRC16 CRC16 Gridsquare as str - - -