Installation guide

Rev 1.1 9/22/14 32
Getting Started
Communicating with the
USR3500
Table 14. AT+WUBS Band Selection
AT+WUBS Command
Description
AT+WUBS=y, x
Where:
y = Band frequency configuration (bit field) in HEX format.
x = Optional reset parameter (0 means the USR3500 will have to be reset
to start on the specified band(s), and 1 means the band switch is effective
immediately. Note that x=1 is forbidden while in Communication mode and
during the USR3500’s initialization.
Refer to the document AT Commands Interface Guide at
http://www.usr.com/support/3500.
Use AT+WWSM to change the cellular network setting of the USR3500. Refer to the
table below for the list of main responses returned.
Table 15. AT+WWSM Cellular Network Setting
AT+WWSM Command
Description
AT+WWSM=0
GSM Digital Cellular System (GERAN)
AT+WWSM=1
Universal Terrestrial Radio Access Network (UTRAN) only
AT+WWSM=2,0
3GPP systems (both GERAN and UTRAN); automatic network
AT+WWSM=2,1
3GPP systems (both GERAN and UTRAN); GERAN preferred
AT+WWSM=2,2
3GPP systems (both GERAN and UTRAN); UTRAN preferred