Specifications

WM_PRJ_Q2501_PTS_001 – 003
March 2004
© 2003 All rights reserved
Page: 23 / 93
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without prior written
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Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à des tiers sans son
autorisation préalable.
Modes Functions
Internal mode
GPS is controlled by the customer application using
specific AT commands through the GSM main serial link.
GPS information can be retrieved either by specific AT
commands on GSM main serial link or directly on the GPS
main serial link (NMEA frames).
The GSM main serial link is used for AT commands to
control both GSM/GPRS and GPS. The GSM auxiliary serial
link is not available because used internally for GSM – GPS
communication.
WISMO Q2501
(DCE)
Application
(DTE)
GSM/GPRS AT commands
GPS AT Commands
GSM Main Serial Link
GSM Auxiliary Serial Link
GPS Main Serial Link
Not available
(internal control of GPS function)
NMEA Frames
The choice between these modes is available by software. See Specific AT
commands for GPS management document [5] for details.
The WISMO Quik Q2501 module is a DCE (Data Communication Equipment).
The names of the WISMO Quik Q2501 module serial link signals are given view
from the application DTE (Data Terminal Equipment).
Example
: GSM_TXD2 means GSM Main Serial Link transmit line of the
application DTE what fits with the receive line (RX) of the WISMO Q2501
module.