4th column DTMF tones (A-D). Yes, not commonly used, but they are still part of the DTMF spec and I often need to use them. Making this optionally part of the keypad would be great.
Openby NA•Apr 11, 2021•2360 votes
Comments
No comments yet
Please allow ads on our site
Looks like you're using an ad blocker. We rely on advertising to help fund our project.
