Protocols - 1

Question 1

CAS

Answer 1

Channel Associated Signaling (Robbed Bit Signaling)

Signaling type where the 8th bit of every 6th sample (frame) is used for carrying the signaling data for that DS0.

Question 2

CCS

Answer 2

Common Channel Signaling

Signaling type where the last DS0 carries all the signaling traffic for the T1 line. 24th channel on T1 and 17th on E1.

Question 3

TDM

Answer 3

Time-Division Multiplexing

Used to multiplex digital voice conversations by dividing them into different time slots.

Question 4

Q.931

Answer 4

ISDN protocol used to carry the signaling traffic for CCS

Question 5

SS7

Answer 5

Signaling System 7

Used by service providers to send billing and call routing information between COs

Question 6

E.164

Answer 6

ITU numbering plan made up of Country Code - National Destination Code - Subscriber Number
NANP uses Country Code - Area Code - CO or Exchange Code - Station Code