Table of Contents
1Scope
2Reference
3Termsanddefinitions
4Abbreviations
5DCMEframestructure
5.1General
6Trunkinterfacestructure
6.1Typeoftrunkinterface
6.2Numberoftrunkinterfaces,trunkchannels
6.3Typeoftrunkchannels
7Bearerinterfacestructure
7.1Cliques,destinationsandbearers
7.2Assignmentmessage
7.3BearerChannels(BC)
7.4ControlChannel(CC)
7.5BCnumberingandtheuseofthebearerframe
8Controlchannel
8.1General
8.2Numberofassignmentmessages
8.3Controlchannelcontent
8.4CCmessagetransmissionscheme
9Lowbit-ratecodecs
9.1Variablebitrateandoverloadchannelcreation
9.2CodectosupportSSNo.5tonesignals
9.3Framealignmentbetweenthedifferenttypesofcodecs
9.4Processingdelaycompensationbetweenthedifferent
typesofcodecs
9.5Synchronousresetbetweenencoderandcorresponding
decoder
10Channelcheckprocedure
11Facsimiledemodulation/remodulation
12Systemstatisticsmeasurement Abstract
Specifies the elements of DCME using 8 kbit/s CS-ACELP, Digital Speech Interpolation (DSI) and facsimile demodulation/remodulation in order to achieve interworking of such equipment. It specifies extensions and deviations for ITU-T G.763, ITU-T G.766 and ITU-T G.767 which specify a 32 kbit/s ADPCM DCME, and facsimile demodulation/remodulation and 16 kbit/s LD-CELP DCME respectively.
