Determines if the echo canceler reference and output can be switched.
Echo.EnableExternalPins = setting
Read/Write
String
NO
NO | YES
Echo.EnableExternalPins = NO
Setting this keyword to YES enables the echo canceler reference input and the echo canceler output to be switched. They appear on output stream 70 and reference stream 71.
Note: This keyword is not applicable for setting hardware echo cancellation values.