DTMF Rate
The purpose of the DTMF rate is to reduce the decoding error by having a fixed time interval between the digits. You can select 5, 6, and 10 digits per second.
Range- 10、6、5
The purpose of the DTMF rate is to reduce the decoding error by having a fixed time interval between the digits. You can select 5, 6, and 10 digits per second.
Range