1. Introduction

The NB-IoT products support auto search NB-IoT bands for NB-IoT connection by default. User can specify it to point to specify band so to speed up the connection.

2. For BC95-G base products

Support Hardware: NBSN95,NB-IoT Bee-95

2.1 Set to use specify band

AT+CFUN=0 (Must deactivate network first,

AT+FBAND=0

AT+NBAND=X (X specifies the band want to use for connection, etc, AT+NBAND=5 or AT+NBAND=5,8)

AT+NRB

ATZ

Specify NB-IoT Band

2.2 Set to auto search all bands (default settings)

AT+NCONFIG=AUTOCONNECT,TRUE

3. For -NB and -NS seriese (BC660K-GL base)

See this link http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.2SpeedUpNetworkAttachtime