What do the ABCD buttons do?

[JB Edmonds]

jb N4NQY

[Weston Bustraan]

The ABCD buttons are really there for completeness. When used with an AllStarLink connection, the keypad sends a DTMF code to the remote node via an IAX message (it does not currently send an actual audio tone). The DTMF specification includes ABCD https://en.wikipedia.org/wiki/DTMF_signaling#Square,_star,_A,_B,_C,_and_D

Typically these signals are used to control certain functions of a repeater. However, while ABCD are available, I think most nodes stick to digits.

- Wes W8WJB

On Wed, Dec 31, 2025 at 4:59 PM JB Edmonds <edmon...@gmail.com> wrote:

jb N4NQY

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