Closing The Multiplexer Protocol And Returning To At Mode; Figure 24: Multiplexer Control Channel And Logical Channel, No Parameter Negotiation - Siemens TC3 Series User Manual

TC3x Multiplexer User's Guide
Customer
Closed Down
Disconnected
Disconnected
DLCI = 0
Connected
DLCI = 0
Disconnected
DLCI = 1
Connected
DLCI = 1

Figure 24: Multiplexer control channel and logical channel, no parameter negotiation

8.4.2 Closing the multiplexer protocol and returning to AT mode

Send Request CLOSE DOWN as a command of the Multiplexer Control Channel
Þ The interface is returned to the AT command mode
TC3x_UG_01_V03.10 - Released
interface
µC
RequestStartUp
ConfirmStartUp
RequestSABM
DLCI = 0
ConfirmUA
DLCI = 0
RequestSABM
DLCI = 1
ConfirmUA
DLCI = 1
Serial
IndicationStartUp
ResponseStartUp
IndicationSABM
DLCI = 0
ResponseUA
DLCI = 0
IndicationSABM
DLCI = 1
ResponseUA
DLCI = 1
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TC3x µC
Closed Down
Disconnected
Disconnected
DLCI = 0
Connected
DLCI = 0
Disconnected
DLCI = 1
Connected
DLCI = 1
10.01.2002