Motorola G24 ユーザーズマニュアル
RS232 Multiplexer Feature
3-434
AT Commands Reference Manual
December 31, 2007
RS232 Multiplexer Feature
The MUX provides multiple logical communication channels between the DTE and G24 over
one physical RS232 connection. This service enables the DTE device to run multiple applications
(such as GPRS, CSD, SMS and voice calls) while communicating simultaneously with the G24.
one physical RS232 connection. This service enables the DTE device to run multiple applications
(such as GPRS, CSD, SMS and voice calls) while communicating simultaneously with the G24.
MUX Details
Protocol Versions
3G TS27.010 v.3.3.0 (2000-03)
System Overview
The MUX service in the G24 provides multiple virtual channels for the DTE that can
communicate simultaneously with the G24. This service allows the DTE to have channels for
command and network indications while other channels are used for data sessions. This service is
available when MUX software entities exist on both the DTE and the G24. These MUX entities
communicate with each other and provide data connection management, which includes
establishment, control, release and data transfer between matching channels in the DTE and G24.
communicate simultaneously with the G24. This service allows the DTE to have channels for
command and network indications while other channels are used for data sessions. This service is
available when MUX software entities exist on both the DTE and the G24. These MUX entities
communicate with each other and provide data connection management, which includes
establishment, control, release and data transfer between matching channels in the DTE and G24.
Note:
MUX over 232 is a software module. No PCB hardware changes are required at either the
G24 or DTE side.
G24 or DTE side.
Figure 3-17: G24 with and without MUX
G24
C ut A -A G24 with Multiplexer
S everal logical channels on One
R S232 physical channel
C ut A -A G 24 without Multiplexer
One logical channels on One R S232
physical channel