Specifications

9www.westermo.com
GPRS
Internet
ISP
?
GPRS
Reliable Radio Transmission
The GDW-Tool has a very useful feature when it comes to
installation of the system with an antenna to make reliable
connections. This is a test that can be carried out without any
SIM-card tted into the modem.
Not only will you see the signal strength of several local cell
sites, but also the actual name of the network provider as well
as the ID-number of that specic radio connection. If the sig-
nal strengths are not sufcient then different types of antenna
can be used to achieve a reliable connection or a different
service provider can be used.
Connection Tool Help
GD-Tool
File
Connection
Main cell
S COMVIQ
Cell ID: d76c RxLev: 30BER: 5 [3,2%<BER<6,4%]
RxLev: 22
RxLev: 12
RxLev: 11
RxLev: 10
RxLev: 10
RxLev: 18
Cell ID: 680a
Cell ID: 57ac
Cell ID: fddb
Cell ID: a74a
Cell ID: d69b
Cell ID: d76a
16
28
S COMVIQ
S COMVIQ
S COMVIQ
S COMVIQ
S COMVIQ
S COMVIQ
Neighbour 1
Neighbour 2
Neighbour 3
Neighbour 4
Neighbour 5
Neighbour 6
If RxLev< RED signal indicator
If RxLev>
1 seconds
Update interval:GREEN signal indicator
Settings
Basic
Serial
Diagnostic
SMS GPRS
Signal
Connection
Status:
Port:
Baud rate:
Data bits:
Stop bits:
Modem:
SIM card:
Connected
1
115200
8
1
Paity: None
GDW-11
Ok
Connected...
The problem occurs when a unit, for example, a computer wants to communi-
cate with peripheral equipment and the computer
generates the connections. No one knows the
IP-address that the computer should connect to,
as these are assigned dynamically.
The same problem occurs when two devices need to communicate and none
of them are master. The modem cannot initiate IP-communication, as it does not
know which IP-address will be assigned.
This is however not a problem if all devices could be assigned a xed IP-address.
AUDIN - 8, avenue de la malle - 51370 Saint Brice Courcelles
Tel : [phone] - Fax : [phone] - Web : http: www.audin.fr - Email : [e-mail]