Siemens 7 - Manual (Page 12)

Multiplexer Driver Developer’s Guide
2 Architecture
s
Mux_Drv_DevGuide_v07 Page 12 of 36 2006-9-27
Confidential / Released
2 Architecture
2.1 Hierarchy Chart in the System
Figure 1: Driver architecture
Sessions running simultaneously
Fax application
data transfers
channel 1
(COM10)
Read battery
status
channel 3
(COM 12)
SMS functions
channel 2
(COM 11)
Terminal
COM1
direct connection
File object for
virtual COM port
File object for
virtual COM port
File object for
virtual COM port
File object for
physical COM1
port
Device object
"winmux2k.sys"
Multiplexer Protocol GSM 07.10
Serial.sys
port COM1
Phys. serial port
Modem
Siemens GSM
engine with
Multiplexer Protocol
User
Kernel
Hardware
RS-232
connection
one control channel and
data channels