G.727 is a specialized version of the ITU-T G.726 protocol that is intended for packet-based systems using the Packetized Voice Protocol (PVP). G.727 uses 5, 4, 3 and 2-bit/sample embedded Adaptive Differential Pulse Code Modulation (ADPCM). (See also ADPCM).

See G.7xx for more information on how these standards are used in telephony networks.
See also ADPCM.

Enterprise VoIP Planet
The IT Manager's Guide to Voice over IP

ITU Recommendation G.727
5-, 4-, 3- and 2-bit/sample embedded adaptive differential pulse code modulation (ADPCM)

Six Steps to Getting Your Network Ready for Voice over IP
Using low bandwidth CODECs helps reduce bandwidth requirements however due to the overhead of IP, UDP and RTP protocols, such reduction is limited.

The International Telecommunication Union
The International Telecommunication Union is an international organization within which governments and the private sector coordinate global telecom networks and services. This home page offers numerous links to highlights and current topics, standardization, radiocommunication, telecommunication, and general secretariat sectors.

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