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-rw-r--r--configs/chan_dahdi.conf.sample12
1 files changed, 12 insertions, 0 deletions
diff --git a/configs/chan_dahdi.conf.sample b/configs/chan_dahdi.conf.sample
index 4ba56999b..b747a1e71 100644
--- a/configs/chan_dahdi.conf.sample
+++ b/configs/chan_dahdi.conf.sample
@@ -268,6 +268,18 @@ context=public
; The default is no.
;hold_disconnect_transfer=yes
+; BRI PTMP layer 1 presence.
+; You should normally not need to set this option.
+; You may need to set this option if your telco brings layer 1 down when
+; the line is idle.
+; required: Layer 1 presence required for outgoing calls. (default)
+; ignore: Ignore alarms from DAHDI about this span.
+; (Layer 1 and 2 will be brought back up for an outgoing call.)
+; NOTE: You will not be able to detect physical line problems
+; until an outgoing call is attempted and fails.
+;
+;layer1_presence=ignore
+
; BRI PTMP layer 2 persistence.
; You should normally not need to set this option.
; You may need to set this option if your telco brings layer 1 down when