From db9652bda83d2c0bce4a990d958630e1abb244c7 Mon Sep 17 00:00:00 2001
From: Renat Zaripov <r.r.zaripov@gmail.com>
Date: Thu, 12 Jan 2012 16:32:21 +0400
Subject: doc: SIM900 driver usage documentation

Adding a short description for usage of SIM900 plugin
---
 doc/sim900-modem.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 doc/sim900-modem.txt

(limited to 'doc')

diff --git a/doc/sim900-modem.txt b/doc/sim900-modem.txt
new file mode 100644
index 00000000..e9f051c3
--- /dev/null
+++ b/doc/sim900-modem.txt
@@ -0,0 +1,12 @@
+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.
-- 
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