If we ask too quick for the PDP context status after a successful
connection attempt reported by the modem, we may find it still flagged
as inactive if the modem is still busy setting up the PPP session.
Do an explicit longer initial timeout before we run the first check,
and after that one setup the additional checks at a higher rate.
Reported-by: Colin Helliwell <colin.helliwell@ln-systems.com>
On modems with a single TTY for both control and data, we cannot use
the TTY to load connection status once we're in connected mode:
Connection through a plain serial AT port (ttyUSB2)
(ttyUSB2): --> 'ATD*99***2#<CR>'
(ttyUSB2): <-- '<CR><LF>CONNECT 100000000<CR><LF>'
(ttyUSB2): port now connected
Connected bearer '/org/freedesktop/ModemManager1/Bearer/0'
Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> connected)
Simple connect state (8/8): All done
checking if connected failed: Couldn't check current list of active PDP contexts: No AT port available to run command
checking if connected failed: Couldn't check current list of active PDP contexts: No AT port available to run command
checking if connected failed: Couldn't check current list of active PDP contexts: No AT port available to run command
...
So, disable connection monitoring right away if that situation is
detected:
Connection through a plain serial AT port (ttyUSB2)
(ttyUSB2): --> 'ATD*99***2#<CR>'
(ttyUSB2): <-- '<CR><LF>CONNECT 100000000<CR><LF>'
(ttyUSB2): port now connected
Connected bearer '/org/freedesktop/ModemManager1/Bearer/0'
Modem /org/freedesktop/ModemManager1/Modem/0: state changed (connecting -> connected)
Simple connect state (8/8): All done
Connection monitoring is unsupported by the device
...
https://bugs.freedesktop.org/show_bug.cgi?id=100376
Introduce "sms only" and "CSFB not preferred" home/roaming states to be reported
for the CS context, while already registered on LTE.
Based on 3GPP TS 27.007 v13.5.0.
Aleksander Morgado
Ben Chan