Which type of voice port supports immediate-start, wink-start, and delay-start followed by pulse or DTMF tones?
A.
FXS
B.
FXS-DID
C.
FXO
D.
E&M
Explanation:
Which type of voice port supports immediate-start, wink-start, and delay-start followed by pulse or DTMF tones?
Which type of voice port supports immediate-start, wink-start, and delay-start followed by pulse or DTMF tones?
A.
FXS
B.
FXS-DID
C.
FXO
D.
E&M
Explanation:
http://www.cisco.com/c/en/us/support/docs/voice/analog-signaling-e-m-did-fxs-fxo/14005-em-supervision.html
and
http://en.wikipedia.org/wiki/E_and_M_signaling
Wink Start – when the originator goes off hook, the other end transmits a short (140-290ms) off-hook signal and returns to on-hook. The originator detects the wink and then sends the dialed digits. The other end goes permanently off-hook (seized) when the call is answered.
Delay Start – the originator goes off hook, waits a pre-defined delay, and then checks for on-hook from the other end before sending the digits.
Immediate Start – The originator goes off hook, waits 150ms and then sends the dialed digits.