The Cinterion plugin tries 'AT^SIND="simstatus",2' in after_sim_unlock(). I
have two Cinterion modems, neither of which - according to their AT Command Set
spec - support the simstatus indicator on this command, and so instead return
"+CME ERROR: 21" (invalid index).
Nonetheless, the operation continues with all 15 of its retries. Should there
perhaps be a 'if (!response)' trap in simstatus_check_ready() so that it bombs
out?
I ask for comment, since I'm not sure (a) exactly what the retries are waiting
for; and, in particular (b) what the response would be while its waiting. (I
don't have a modem which does support the indicator).
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