4 To enable SIM900 module support you need to put the following
5 udev rule into appropriate file in /{etc,lib}/udev/rules.d:
7 KERNEL=="gsmtty3", ENV{OFONO_DRIVER}="sim900"
9 On the i-Tetra tracking device, the SIM900 is accessed
10 via N_GSM mux device. We use ofono as SMS message
11 service and incoming voice calls service, so we
12 use /dev/gsmtty1 provided by N_GSM mux.