Integration Manual

GTM353W Integration Manual
Author:
R
. Claessens
Version:
4.0 Draft 2
Creation Date:
September 20, 2006
Page:
35 of 52
Option Confidential:
This document is Option Confidential - it may not be duplicated, neither distributed externally without prior and written permission of
Option NV.
4 HOST CONTROL INTERFACES
Figure 14 shows the NDIS interface via the TCP/IP stack as well as the COM interface via the
custom IOCTL interface. More details on the driver interface can be found in the following
chapter (Device Driver Interface)
ยท Figure 21: Host interface components
4.1 USB interface
The hardware USB interface is USB 2.0 compatible, USB 2.0 Full Speed (12Mbi/s) signalling
will be used.
4.2 COM interface
Three com ports are defined:
- application: This interface can be used for SMS and AT control commands and event
reporting
- modem: a second COM port provides the interface for the data channel and supports dial up
networking
-diagnostic: A third port is used for layer 1-3 stack tracing and debugging messages.
4.3 NDIS interface
The NDIS interface for the data channel provides an "auto start", "no click" way to get online
for a user. To the operating system, the card is represents itself as a network interface card,
hiding dial-up networking and AT commands.
One NDIS driver could also run the SMS and signal strength port. This data can be shipped to
an application via a custom IOCTL interface.