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doc: SIM900 driver usage documentation 

Adding a short description for usage of SIM900 plugin
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Renat Zaripov 2012-01-12 16:32:21 +04:00 committed by Denis Kenzior
parent 4d388a684b
commit db9652bda8
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doc/sim900-modem.txt Normal file
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SIM900 modem usage
===================
To enable SIM900 module support you need to put the following
udev rule into appropriate file in /{etc,lib}/udev/rules.d:
KERNEL=="gsmtty3", ENV{OFONO_DRIVER}="sim900"
On the i-Tetra tracking device, the SIM900 is accessed
via N_GSM mux device. We use ofono as SMS message
service and incoming voice calls service, so we
use /dev/gsmtty1 provided by N_GSM mux.