Which type of voice port supports immediate-start, wink-start, and delay-start followed by pulse or DTMFtones?
A. FXS
B. FXS-DID
C. FXO
D. E&M
Which type of voice port supports immediate-start, wink-start, and delay-start followed by pulse or DTMFtones?
A. FXS
B. FXS-DID
C. FXO
D. E&M