ESP32-WROOM reponse ERROR when use AT+TRANSINTVL

[dghost]

I want to use AT+TRANSINTVL to Set the Data Transmission Interval in Passthrough Mode.

However,when i send 'AT+TRANSINTVL?' or 'AT+TRANSINTVL=<interval>',ESP32-WROOM response ERROR.other Commands,such as AT+CIPSTART="UDP"... or AT+CIPSEND are ok.

I use ESP32-WROOM-32U.I want to know how to change Data transmission interval to 2ms and why 'AT+TRANSINTVL?' response ERROR.Default value (20ms) is too long.

[dghost]

The version is as follows
AT version:2.1.0.0(883f7f2 - Jul 24 2020 11:50:07)
SDK version:v4.0.1-193-ge7ac221
compile time(0ad6331):Jul 28 2020 02:47:21
Bin version:2.1.0(WROOM-32)

[aliarifat794]

The AT+TRANSINTVL command might not be supported by the specific firmware version installed on your ESP32-WROOM-32U.