DTMF - 5 digits limit? how to overcome this limit?

Question

Hello Everyone,
I'm using Copilot Studio building an agent. Currently, it seems that Copilot Studio has a DTMF input limitation of only 5 digits. After selecting 5 digits on your dial pad, the string is sent to the bot, and there is no way to extend this limitation.

For example, if a caller wants to enter their phone number(14 digits, including the prefix) using the dialpad, after the first 5 digits, it is no longer possible to continue entering the value because the bot closes the connection after the 5th digit.

Has anyone tried to manage this issue?

Answer 1

Hello Artem,
Copilot Studio has a 5-digit DTMF limit per prompt. To handle longer inputs like 14-digit phone numbers:

Split into multiple prompts (e.g., ask for area code, then next digits).

Use # as a termination key so users can enter all digits then press #.

Use a custom bot or plugin (e.g., Bot Framework) to override the maxDigits setting.

Answer 2

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