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-rw-r--r--configs/samples/chan_dahdi.conf.sample14
1 files changed, 14 insertions, 0 deletions
diff --git a/configs/samples/chan_dahdi.conf.sample b/configs/samples/chan_dahdi.conf.sample
index 13691fcdf..e027e64fa 100644
--- a/configs/samples/chan_dahdi.conf.sample
+++ b/configs/samples/chan_dahdi.conf.sample
@@ -196,6 +196,20 @@ context=public
;
;resetinterval = 3600
;
+; Enable per span to force a RESTART on a channel that returns a cause
+; code of PRI_CAUSE_REQUESTED_CHAN_UNAVAIL(44). If the cause is because
+; of a stuck channel on the peer and the channel is always the next
+; channel we pick for an outgoing call then this might help.
+;
+; NOTE: Sending a RESTART in response to a cause 44 is not required
+; (nor prohibited) by the standards and is likely a primitive chan_dahdi
+; response to call collisions (glare) and buggy peers. However, there
+; are telco switches out there that ignore the RESTART and continue to
+; send calls to the channel in the restarting state.
+; Default yes in current release branches for backward compatibility.
+;
+;force_restart_unavailable_chans=yes
+;
; Assume inband audio may be present when a SETUP ACK message is received.
; Q.931 Section 5.1.3 says that in scenarios with overlap dialing, when a
; dialtone is sent from the network side, progress indicator 8 "Inband info