When I use the read method to read the buttons, the caller will read the DTMF button even if there is no button

When I use the read method to read the buttons, the caller will read the DTMF button even if there is no button.And it’s still a letter

Read(collectKeypressed,${FILENAME},1,3,5);

Please provide logs as plain text, from the full log file, not as screen images.

chan_sip is no longer supported.

What is your dtmfmode setting?

What is your codec?

This looks like talk off, where inband DTMF is used and speech is incorrectly recognized as DTMF. A, B, C, and D are valid DTMF digits, even though not on standard keypads.

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