�1���� Scope
�2����
Control model
������� 2.1���� Device codes
�3����
Commands
������� 3.1���� Terminal configuration, +STC
������� 3.2���� Close logical channel, +STH
������� 3.3���� Data configuration, +SDC
������� 3.4���� Audio transmit configuration, +SAC
������� 3.5���� Audio receive mode +SAM
������� 3.6���� Video transmit configuration +SVC (Class 18 only)
������� 3.7���� Video receive mode +SVM (Class 18 only)
������� 3.8���� Data indication reporting, +SDR
������� 3.9���� Audio indication reporting, +SARR
������ 3.10���� Video indication reporting, +SVRR (Class 18 only)
������ 3.11���� Capabilities indication reporting, +SCRR
�4����
Additional commands
������� 4.1���� Set audio code, +VAC
������� 4.2���� Receive gain selection, +VGR
������� 4.3���� Transmit gain selection, +VGT
������� 4.4���� Beep tone duration timer, +VTD
������� 4.5���� DTMF and tone generation, +VTS
������� 4.6���� Ring local phone, +VRL
������� 4.7���� Speakerphone ON/OFF, +VSP
������� 4.8���� Train acoustic echo-canceller, +VTA
������� 4.9���� Train hybrid echo-canceller, +VTH
������ 4.10���� Speakerphone configuration, +VDX
������ 4.11���� Phone hookswitch status, +VPH
������ 4.12���� Telephony port hook control, +VHC
�5����
Indications
������� 5.1���� Remote terminal capabilities indications
����������������� 5.1.1���� Remote terminal capability table entry
indications, +SRCV, +SRCA, +SRCD
����������������� 5.1.2���� Remote terminal simultaneous capability
indication, +SRSC
������� 5.2���� Data channel indication, +SDI
������� 5.3���� Audio receive channel indication, +SAR
������� 5.4���� Audio transmit channel indication, +SAT
������� 5.5���� Video receive channel indication, +SVR (Class 18 only)
������� 5.6���� Video transmit channel indication, +SVT (Class 18 only)
�6����
Additional indications
������� 6.1���� Audio code report, +VACR
������� 6.2���� Caller ID report, +VCIDR
������� 6.3���� DID report, +VDIDR
������� 6.4���� Simple telephony event report, +VTER
�7����
In-band indications and commands
������� 7.1���� In-band indications
������� 7.2���� In-band commands
������� 7.3���� Remote DCE in-band commands and indications