INTERNATIONAL  TELECOMMUNICATION  UNION

		     ITU-T RECOMMENDATION SUMMARY


Rec. No. : G.764

Title :	Voice packetization - packetized voice protocoles


Study Group : XV - Transmission Systems and Equipment



Version : New
Date of adoption : 1990
Notes :	


Recommendation G.764 defines a packet voice protocol for speech 
packetization in permanent virtual circuit applications. The principal 
application of the packetized voice protocol (PVP) is at the primary 
rate and in fractional primary rate applications.

The protocol defines formats and procedures for the transport of voice 
information and channel associated signalling over a wideband packet 
network.

Recommendation G.764 accommodates additional future types including 
optional internetworking capabilities with the digital cellular radio 
networking applications currently under development. The extension of 
Recommendation G.764 for baseband facsimile traffic is currently under 
study.

Recommendation G.764 does not address performance issues.

Recommendation G.764 does not address methods for coding speech 
samples, although particular recommended coding algorithms are 
specified in the protocol (e.g. the algorithms in 
Recommendation G.726). In particular, Recommendation G.764 allows 
dynamic bandwidth allocation and graceful congestion control when the 
speech samples are coded with embedded algorithms such as those 
specified in Recommendation G.727.



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