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FCS Protocol for MMDVM & DV4mini HOTSPOTS
FCS Listener-UDP-Port: 62500
LOGIN PING (Poll)
| Name | Length | Values | Comment |
| Signature | 4 Byte | PING | |
| RPTR-Callsign | 6 Byte | OE1KBC | ASCII filled up with blank 0x20 |
| Reflector | 8 Byte | FCS00101 | ASCI Reflector FCS001 + DG-ID 01 |
| Filler | 7 Byte | 0x00 | filled up with 0x00 |
| total 25 byte | | | |
LOGOUT CLOSE (Unlink)
| Name | Length | Values | Comment |
| Signature | 4 Byte | CLOSE | In ASCII |
| Filler | 7 Byte | 0x20 | ASCII filled up with blank 0x20 |
| total 11 byte | | | |
OPTIONS FCSO (DG-ID-List to Reflector)
| Name | Length | Values | Comment |
| Signature | 4 Byte | FCSO | ASCII |
| Reflector | 8 Byte | FCS00101 | ASCI Reflector FCS001 + DG-ID 01 |
| OPTIONS | 38 Byte | 10;20;77;80; | DG-ID separated by ; semicolon filled up with 0x20 |
| total 50 byte | | | |
INFO FCSI (Info to YCS-compatible reflector)
| Name | Length | Values | Comment |
| Signature | 4 Byte | FCSI | ASCII |
| Reflector | 8 Byte | FCS00101 | ASCI Reflector FCS001 + DG-ID 01 |
| 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 |
| YSFGateway-ID | 7 Byte | 0232155 | ASCII 9999999 |
| Filler | 5 Byte | | ASCII filled up with blank 0x20 |
| total 80 byte | | | |
PAYLOAD (Data)
| Name | Length | Values | Comment |
| 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+ | |
| STATUS | 1 Byte | (0x00 / 0x01) + 0xFE | Status 0,1 + (Count « 1) |
| Reflector | 8 Byte | FCS00101 | ASCI Reflector FCS001 + DG-ID 01 |
| Filler | 1 Byte | | ASCII filled up with 0x00 |
| total 130 byte | | | |
