11
Changing the Quad Band
The SocketModem Cell and the SocketModem iCell both support quad band frequencies (850/1900/900/1800 MHz).
In reality, these products operate like dual, dual-band devices. In other words, they can be configured for 850/1900 or
900/1800 MHz. They do not auto-seek the local area frequency.
Build Options
These wireless modems can be ordered with the default set to 850/1900 MHz
or
900/1800 MHz.
•
850/1900 MHz
–
The wireless modem defaulting to 850/1900 MHz is the default build option.
•
900/1800 MHz
–
The wireless modem defaulting to 900/1800 MHz is identified with
-ED
in the product
ordering number which signifies European default.
Changing the GSM Band
If for any reason, such as moving the modem from one geographical area to another, you want to change the
band, you can accomplish this by using the
+WMBS
AT Command.
Steps for Changing the GSM Band
Use a terminal application such as HyperTerminal for entering the AT Command.
1.
To open HyperTerminal, click
Start
. Then select
Programs
>
Accessories >
Communications
. Then
click
HyperTerminal
.
2.
When the command window opens, type
AT+WMBS=<Band><Param>
.
Press
Enter
.
•
For
<Band>
, enter the option you desire:
4
= Dual-band mode 850/1900MHz
5
=
Dual-band mode 900/1800MHz
•
For
<Param>
, enter the option you desire:
0
= Modem must be reset in order to use the specified band(s). This is the default.
1
= Modem restarts immediately using the specified band(s).
Example: AT+WMBS=4,0.
Press
Enter
.
Содержание MTSMC-G2
Страница 1: ...SocketModem GSM MTSME G2 Hardware Guide for Developers...
Страница 7: ...Mechanical Drawings Basic Build 7...
Страница 8: ...Mechanical Drawings Voice Build 8...
Страница 9: ...Mechanical Drawings IP Build 9...
Страница 28: ...28 SocketModem Developer Board Block Diagram Comment DAR8 Block Diagram 2008 png...