US Robotics USR3500 Guide d'installation télécharger pdf (Page 31)

Rev 1.1 9/22/14 31

Getting Started

Communicating with the

USR3500

Table 12. AT+WWSM? Main Reponses

AT+WWSM? Response

Description

AT+WWSM: 0

GSM digital cellular system (GERAN)

AT+WWSM: 1

Universal Terrestrial Radio Access Network (UTRAN) only

AT+WWSM: 2, x

3GPP systems (both GERAN and UTRAN)

Where if x is:

0 = automatic

1 = GERAN preferred

2 = UTRAN preferred

6.5. Switching Bands

Use the AT+WMBS AT Command to change the band setting of the USR3500 and

switch between EU and US bands and vice versa. Refer to the following table for the list

of AT+WMBS parameters that can be used and their corresponding description.

Table 13. AT+WMBS Band Selection

AT+WMBS Command

Description

AT+WMBS=0,x

Switch to mono band mode 850MHz

AT+WMBS=1,x

Switch to mono band mode extended 900MHz

AT+WMBS=2,x

Switch to mono band mode 1800MHz

AT+WMBS=3,x

Switch to mono band mode 1900MHz

AT+WMBS=4,x

Switch to dual band mode 850/1900MHz

AT+WMBS=5,x

Switch to dual band mode extended 900/1800MHz

AT+WMBS=6,x

Switch to dual band mode extended 900/1900MHz

AT+WMBS=7,x

Switch to quad band mode 850/900E (extended)/1800/1900MHz

Where:

When x = 0, the USR3500 will have to be reset to start on the specified band(s);

When x = 1, the band switch is effective immediately. However, this mode is

forbidden while in Communication mode and during the USR3500’s initialization.

Use AT+WUBS to change the UMTS-FDD band setting of the USR3500.

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US Robotics USR3500 Guide d'installation Page 31

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