- OSI layer 2 (data link layer) protocol. Technically, it occupies layers 1-3.
- Same layer as BATMAN-Advanced.
- Used for packet radio by hams.
- Can transport network layer protocols, including IP.
- Not designed to support switching, though routers can probably be set up to handle it.
- Support in the Linux kernel.
- Commonly used with three different communication specs:
- Bell 103 tones @ 300bps
- Bell 202 tones @ 1200bps
- G3RUH DFSK @ 9600bps
- These speeds are hard limits.
- KISS encapsulates frames such that they can be send to a TNC for transmission. Derived from SLIP.
- KISS is a serial protocol. Thus, multiple serial channels are required for multiple transceivers.
- Other protocols fulfill the same function.
- Either half or full duplex modes.
- Three components
- Kernel module
- Configuration utilities
- Utility software
- Each AX.25 network device ("port") must be configured with a callsign/SSID.
- We would be using soundmodem on top of this.
Wikipedia: AX.25
About AX.25
Linux AX.25 Howto
