I made an interesting observation here. Aircard creates three USB serial
ports when its driver gets loaded by the kernel.
/dev/ttyUSB1 does not work with any of the AT commands at all (returns
nothing)
/dev/ttyUSB2 seems to work fully and gives the following output:
AT
OK
AT+CGDCONT?
+CGDCONT: 1,"IP","ISP.CINGULAR","",0,0
+CGDCONT: 16,"IP","isp.cingular","",0,0
OK
AT+CGDCONT=?
+CGDCONT: (1-16),"IP",,,(0,1),(0,1)
+CGDCONT: (1-16),"PPP",,,(0,1),(0,1)
it is possible to directly dial without (re)setting the AP
ATD*99#
CONNECT
/dev/ttyUSB0 partially works:
(local echo needs to be activated)
AT
OK
AT+CGDCONT?
ERROR
AT+CGDCONT=?
ERROR
however, its possible to set the AP manually and dial
AT+CGDCONT=1,"IP","ISP.CINGULAR"
OK
ATD*99#
CONNECT
Network Manager seems to use /dev/ttyUSB0 by default which could be a
reasons things do not work.
--
NM 0.7 does not set APN for AT&T 3G connection
https://bugs.launchpad.net/bugs/282207
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