A VoIP system will require 23 concurrent voice channels and one signaling channel.
Which of the following types of WAN service would provide the BEST connectivity to the PSTN?
A.
PRI B.
BRI C.
E1/E3 D.
DSL.
A.
A VoIP system will require 23 concurrent voice channels and one signaling channel.
Which of the following types of WAN service would provide the BEST connectivity to the PSTN?
A.
PRI
B.
BRI
C.
E1/E3
D.
DSL.
A.
The answer is A. PRI (Primary Rate Interface).
PRI is a type of WAN service that is used to connect a Private Branch Exchange (PBX) to the Public Switched Telephone Network (PSTN). It is a dedicated digital circuit that provides 23 voice channels for transmitting voice data and one channel for signaling. This makes PRI an ideal choice for a VoIP system that requires 23 concurrent voice channels and one signaling channel.
BRI (Basic Rate Interface) is another type of WAN service that provides 2 voice channels and 1 signaling channel. It is commonly used for small offices or home offices and is not suitable for a VoIP system that requires 23 concurrent voice channels.
E1/E3 is a high-speed digital circuit used in Europe and Asia that provides multiple channels for transmitting data and voice. However, it is not specifically designed for VoIP and may not provide the best connectivity to the PSTN for a VoIP system.
DSL (Digital Subscriber Line) is a broadband technology that uses existing telephone lines to provide high-speed internet access. It is not designed for voice transmission and is not suitable for a VoIP system that requires 23 concurrent voice channels.
In summary, PRI is the best choice for a VoIP system that requires 23 concurrent voice channels and one signaling channel as it is specifically designed for this purpose and provides the necessary channels for voice and signaling.