Question

Compare in channel signalling and common channel signaling

Answer 1

Answer:

IN-CHANNEL  SIGNALLING :

•Trunks are held up during signalling

•Interference between Voice and Control Signals may occur

•Separate signaling equipment is required in each trunk hence expensive

•Can be misused by customers since it is easy to mimic voice signaling

•Signalling is relatively slow

•Speech circuit continuity is assured when signaling is received

•It is difficult to change signals or add new signals

COMMON CHANNEL SIGNALLING :

•Trunks are not required for signaling

•No interference since the voice and control channels are separate

•Only one set of signaling equipment is required for a large group of trunk circuits hence economical

•Control channel is in-accessible to users

•Signalling is much faster

•State of speech circuit not automatically assured

•There is flexibility to add new signals or change existing signals

Answer 2

Answer:

Explanation:

Differentiate between In-channel and common-chann elgnaling.