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chan_dahdi: Configurable dialed digit timeouts

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Analog phones dial overlap dialing and it is chan_dahdi's job to read the
numbers.  It has three timeout constants that this commit converts to
channel-level configuration options:

* firstdigit_timeout: Default time (ms) to detect first digit

* interdigit_timeout: Default time (ms) to detect following digits

* matchdigit_timeout: Default time (ms) to wait in case of ambiguous
match.  This happens when the dialed digits match a number in the current
context but are also the prefix of another number.

Change-Id: Ib728fa900a4f6ae56d1ed810aba61b6593fb7213
This commit is contained in:
Tzafrir Cohen
2018-03-21 14:30:18 +02:00
committed by Richard Mudgett
parent e538fc8e86
commit 6301531416
7 changed files with 118 additions and 29 deletions
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15
configs/samples/chan_dahdi.conf.sample
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@@ -1137,6 +1137,21 @@ pickupgroup=1
;
;faxbuffers=>6,full
;
; When FXO signalling (FXS device, e.g. analog phone) is used, overlap dialing
; is typically used. Asterisk has several configurable (per-channel) timeouts
; to know how long to wait for the next digit. All the values are in
; milliseconds.
; * firstdigit_timeout: a longer timeout before any digit is dialed.
; By default: 16 seconds.
; * interdigit_timeout: timeout for next digits, if the current number dialed
; does not match a number in the current context. Default: 8 seconds.
; * matchdigit_timeout: timeout for next digits, if the current number dialed
; matches a number in the current context. Default: 3 seconds.
;
;firstdigit_timeout=16000
;interdigit_timeout=8000
;matchdigit_timeout=3000
;
; Configure the default number of DAHDI buffers and the transmit policy to use.
; This can be used to eliminate data drops when scheduling jitter prevents
; Asterisk from writing to a DAHDI channel regularly. Most users will probably