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?

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:



Leave a Reply 1

Your email address will not be published. Required fields are marked *


rpgghost

rpgghost

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.