Which two are attributes of SCCP? (Choose two)
A.
It is Cisco proprietary.
B.
It is a supervisory signaling protocol.
C.
It is classified as client/server architecture.
D.
SCCP devices are considered intelligent endpoints.
Explanation:
SCCP is the only Cisco-proprietary VoIP protocol currently in use. The purpose of SCCP protocol is to provide a signaling protocol between the Cisco Unified Communications Manager and Cisco IP phones. Similar to MGCP, SCCP is a client/server protocol -> A & C are correct.Supervisory signals involves the detection of changes to the status of a circuit (on-hook, off-hook, ringing). Any event causes a message to be sent to a Cisco UCM -> We can say SCCP is more than a supervisory signaling protocol because it tells the phone exactly what to do. From the on-hook, off-hook, buttons pressed, lamp on/off, through the prompt, key settings, and even the dialtone -> B is not correct.
The beauty of SCCP is that it makes the endpoints very cheap comparing to the H.323 devices. The end stations (telephones) that use SCCP are
called Skinny clients, which consume less processing overhead and they do not contain call control intelligence -> D is not correct.
SCCP devices (in this case the Cisco IP Phones) become dump devices when using this protocol because they have to ask the Unified Communications Manager for every action they need to do -> D is not correct.
