ITU F.721:1992
ITU F.721:1992 Videotelephony Teleservice For Isdn
Table of Contents
1Definition2Description
2.1Generaldescription
2.2Specificterminology
3Procedures
3.1Provision/withdrawal
3.2Normalprocedures
3.3Exceptionalprocedures
4Networkcapabilitiesforcharging
5Intercommunicationandinterworkingconsiderations
5.1Intercommunication/interworkingwithother
terminals
5.2InterworkingwithprivateISDNs
6Attributes/values
6.1Applicationoftheattributemethod
6.2Lowlayerattributes
6.3Accessattributes
6.4Highlayerattributes
6.5Generalattributes
7Supplementaryservicesprovided
8QualityofService
8.1Synchronismofspeechandlipmovement
(lipsynchronism)
8.2Soundquality
8.3Picturequality
8.4Theoveralldelay
9Intercommunication/interworkingpossibilities
10Operationalandcommercialaspects
ANNEXEA-Alphabeticallistofabbreviationusedinthis
Recommendation/Prev
780R/Parent750R/A790R