Which protocol is used to reduce the size of RTP/UDP/IP headers from 40 bytes to 2 bytes (mostly) to save bandwidth and provide better throughput?

Which cable is mostly used in traditional telephones?

Two steps involved in the process of conversion of digital signals into analog signals?

On which layer of the OSI model does TCP & UDP work?

Which protocol does VoIP use at the transport layer of the TCP/IP model?

Which can correct small amounts of packet loss in VoIP network?

Full form of DPNSS?

What is a soft phone?

Full form of DSL?

Which TCP port number is used by H.323 protocol for call setup?

Function of D (Data) channel in ISDN?