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Commit 2031bd6a authored by Bob Ham's avatar Bob Ham
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base-call: Increase incoming call timeout to seven seconds

The standard says a RING or CRING should be emitted whenever the
network sends an incoming call notification, which is nation-specific:

  "Interpretation of indications from the network to determine what
  constitutes a "ring" is defined by national regulations.  This
  result code should be repeated each time the network repeats the
  incoming call indication."  -- ITU-T Rec. V.250, p. 42

On the giffgaff (O2) network in the UK, a SIMCom SIM7100E modem emits
RING indicators every six seconds.  The current timeout is only five
seconds resulting in a stream of timed-out ModemManager call objects
whenever there is an incoming call.  To fix this, we increase the
timeout to seven seconds.
parent 3c267cf6
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