Annex D03 Circuit Switching Signaling

Question 0

Analog In Band Signaling

Answer 0

Signals that use audio tone freqs within the human speech/hearing range

Examples are Dial Pushing and Dual Tone Multi Frequency (DTMF)

Question 1

Signaling

Answer 1

Info exchange governing the establishment and control of a telecom connection and the mgmt of the network

Question 2

Digital In Band Signaling

Answer 2

Signaling bits travel along the same channel as traffic

Also called “robbed bit” signaling because it will “rob” the least significant bits of the user traffic to convey line state info

Question 3

Analog Out of Band Signaling

Answer 3

Uses a portion of the channel bandwidth provided by the transmission medium

Question 4

Digital Out of Band Signaling

Answer 4

Signaling bits travel in a separate channel from the user generated traffic

PRI is the form of digital out of band signaling most prevelent in the USMC