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YSF Protocol for MMDVM-HOTSPOTS
YCS Listener-UDP-Port: 42000
LOGIN YSFP (Poll)
| Name | Length | Values | Comment |
| Signature | 4 Byte | YSFP | |
| RPTR-Callsign | 10 Byte | OE1KBC | ASCII filled up with blank 0x20 |
| total 14 byte | | | |
LOGOUT YSFU (Unlink)
| Name | Length | Values | Comment |
| Signature | 4 Byte | YSFU | In ASCII |
| RPTR-Callsign | 10 Byte | OE1KBC | ASCII filled up with blank 0x20 |
| total 14 byte | | | |
OPTIONS YSFO (DG-ID-List to Reflector)
| Name | Length | Values | Comment |
| Signature | 4 Byte | YSFO | ASCII |
| RPTR-Callsign | 10 Byte | OE1KBC | ASCII filled up with blank 0x20 |
| OPTIONS | 36 Byte | OE1KBC | ASCII filled up with blank 0x20 |
| | | 10;20;77;80; | DG-ID separated by ; semicolon |
| total 50 byte | | | |
INFO YSFI (Info to Reflector)
| Name | Length | Values | Comment |
| Signature | 4 Byte | YSFI | ASCII |
| RPTR-Callsign | 10 Byte | OE1KBC | ASCII filled up with blank 0x20 |
| RX-Frequency | 9 Byte | 430600000 | ASCII 999999999 |
| TX-Frequency | 9 Byte | 438200000 | ASCII 999999999 |
| Locator | 6 Byte | JN88EG | ASCII |
| Name/Town | 20 Byte | Vienna | ASCII filled up with blank 0x20 |
| HOTSPOT-Type | 12 Byte | MMDVM | ASCII filled up with blank 0x20 |
| | | OPENSPOT3 | ASCII filled up with blank 0x20 |
| | | DV4mini | ASCII filled up with blank 0x20 |
| | | PiStar | ASCII filled up with blank 0x20 |
| YSFGateway-ID | 7 Byte | 0232155 | ASCII 9999999 |
| Filler | 3 Byte | | ASCII filled up with blank 0x20 |
| total 80 byte | | | |
PAYLOAD YSFD (Data)
| Name | Length | Values | Comment |
| Signature | 4 Byte | YSFD | ASCII |
| RPTR-Callsign | 10 Byte | OE1KBC | ASCII filled up with blank 0x20 |
| USER-Callsign | 10 Byte | OE8KBC | ASCII filled up with blank 0x20 |
| DEST-Callsign | 10 Byte | ALL__ | ASCII filled up with blank 0x20 |
| STATUS | 1 Byte | (0x00 / 0x01) + 0xFE | Status 0,1 + (Count « 1) |
| FS+FICH | 30 Byte | see table | |
| PAYLOAD 1 CHECK | 5 Byte | ?? | |
| PAYLAOD 1 AMBE | 13 Byte | AMBE+ | |
| PAYLOAD 2 CHECK | 5 Byte | ?? | |
| PAYLAOD 2 AMBE | 13 Byte | AMBE+ | |
| PAYLOAD 3 CHECK | 5 Byte | ?? | |
| PAYLAOD 3 AMBE | 13 Byte | AMBE+ | |
| PAYLOAD 4 CHECK | 5 Byte | ?? | |
| PAYLAOD 4 AMBE | 13 Byte | AMBE+ | |
| PAYLOAD 5 CHECK | 5 Byte | ?? | |
| PAYLAOD 5 AMBE | 13 Byte | AMBE+ | |
| total 155 byte | | | |
