Rs232 Multiplexer Feature; Mux Details; Protocol Versions; System Overview - Motorola G24 Guide Developer's Manual

RS232 Multiplexer Feature

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.

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.
Note:
Figure 3-17: G24 with and without MUX
3-434
MUX over 232 is a software module. No PCB hardware changes are required at either the
G24 or DTE side.
C ut A -A G 24 without Multiplexer
One logical channels on One R S232
physical channel
AT Commands Reference Manual
G24
C ut A -A G24 with Multiplexer
Several logical channels on One
R S232 physical channel
December 31, 2007