gsmd2: add more notes about COPS

Signed-off-by: NeilBrown <neil@brown.name>

diff --git a/gsm/gsmd2.py b/gsm/gsmd2.py
index 281989bd2146106451a3858ef98b44005e25f230..c5197d4f6164f2c094d7cfaf13d1dcd25b7ec9d4 100644 (file)
--- a/gsm/gsmd2.py
+++ b/gsm/gsmd2.py
@@ -593,9 +593,16 @@ add_engine(flight())
 #  +CFUN=1  - turns on
 #  +COPS=0  - auto select
 #  +COPS=1,2,50502 - select specific (2 == numeric)
+#  +COPS=2  - deregister
 #  +COPS=3,1 - report format is long (1 == long)
 #  +COPS=4,2,50502 - select specific with auto-fallback
 #  http://www.shapeshifter.se/2008/04/30/list-of-at-commands/
+# response to +COPS? is e.g. 4,1,"xxxxx",2
+#  4 == auto-fllback
+#  1 == long text
+#  xxx = carrier name
+#  2 == access technology - utran?
+
 class register(Engine):
     def __init__(self):
         Engine.__init__(self)