What is the purpose of SIP in VoIP?

A) It carries voice and data.
B) It connects the VoIP phone to an analog phone.
C) It sets up the VoIP phone calls.
D) It works with a PBX.


C
Explanation: Session Initiation Protocol (SIP) is a VoIP signaling protocol used to set up, maintain, and tear down VoIP phone calls. SIP is spoken between the IP phone and the call agent to establish a call. The call agent then uses SIP to signal a local gateway to route the call, and that gateway uses SIP (across an IP WAN) to signal the remote gateway (on the right) about the incoming call.

Computer Science & Information Technology

You might also like to view...

Call-by-reference should be used

a. For all variables b. When the function needs to change the value of one or more arguments c. Never d. only in void functions

Computer Science & Information Technology

When GetUpperBound is used with a two-dimensional array, the ____ in the dimension argument represents the column dimension.

A. 0 B. 1 C. col D. horz

Computer Science & Information Technology

When deriving a class from a base class with public inheritance, public members of the base class become _______ members of the derived class, and protected members of the base class become ______ members of the derived class.

Fill in the blank(s) with the appropriate word(s).

Computer Science & Information Technology

Phil is designing a report in Access. He needs to change the design of some elements of the report, but also needs to use a filter to exclude some records in the report. He can use the ________ view to accomplish his tasks

Fill in the blank(s) with correct word

Computer Science & Information Technology