Q2686 Wavecom, Q2686 Datasheet - Page 81
Manufacturer Part Number
Wavecom strongly recommends to work with an antenna manufacturer either
to develop an antenna adapted to the application or to adapt an existing
solution to the application.
Both the mechanical and electrical antenna adaptation is one of the key issues
in the design of the GSM terminal.
6.2 Mechanical Integration
Attention should be paid to:
6.3 Operating System Upgrade
The Q2686 Wireless CPU
easily be upgraded.
In order to follow regular changes in the GPRS standard and to offer a state-of-
designed around a Wireless CPU
Operating System upgrades on the Wireless CPU
protocol. Therefore, the application shall either allow a direct access to the
mechanism allowing the Wireless CPU
The Operating System file can be downloaded to the modem using the X-
modem protocol. The AT+WDWL command allows the download process to
be launched (see the description in the AT Command User Guide ).
The serial signals required to proceed with X-modem downloading are:
Rx, Tx, RTS, CTS and GND.
The Operating System file can also be downloaded to the modem using the
DOTA (download over the air) feature. This feature is available with the Open
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without
prior written agreement.
interface. For more details, please, refer to the Open AT
Antenna cable integration (bending, length, position, etc)
Leads of the Wireless CPU
serial link through an external connector or implement any
Operating System is stored in flash memory and can
to be soldered to the Ground plane
(or Wireless CPU
Operating System to be downloaded
via the standard X-modem
based product) allow easy
Q2686 Wireless CPU
March 6, 2007
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