1#!/bin/sh 2# Sierra Wireless 3G/4G 250U 3 4# CDMA Version 5# at!rssi? # Show signal level -60 to -90 dbm is acceptable 6# at!pcinfo # Show if the modem is online 7# at!pcstate=1 # Turn radio on 8 9chat -t 100 -v '' 'ATZ' \ 10 'OK' 'AT!PCSTATE=1' \ 11 'OK' 'ATDT#777' \ 12 TIMEOUT 120 \ 13 'CONNECT' '\c' 14