Which of the following ports is commonly used by VoIP phones?

Which of the following ports is commonly used by VoIP phones?
A . 20
B . 143
C . 445
D . 5060

View Answer

Answer: D

Explanation:

TCP/UDP port 5060 is commonly used by VoIP phones. It is the default port for SIP (Session Initiation Protocol), which is a signaling protocol that establishes, modifies, and terminates multimedia sessions over IP networks. SIP is widely used for VoIP applications such as voice and video calls.

Reference: https://www.voip-info.org/session-initiation-protocol/