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sig_analog: Add Called Subscriber Held capability.

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This adds support for Called Subscriber Held for FXS
lines, which allows users to go on hook when receiving
a call and resume the call later from another phone on
the same line, without disconnecting the call. This is
a convenience mechanism that most real PSTN telephone
switches support.

ASTERISK-30372 #close

Resolves: #240

UserNote: Called Subscriber Held is now supported for analog
FXS channels, using the calledsubscriberheld option. This allows
a station  user to go on hook when receiving an incoming call
and resume from another phone on the same line by going on hook,
without disconnecting the call.

(cherry picked from commit cd0bfe193f)
This commit is contained in:
Naveen Albert
2023-08-09 22:04:23 +00:00
committed by Asterisk Development Team
parent 64f76bdc60
commit e2f0538dea
5 changed files with 60 additions and 0 deletions
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7
channels/chan_dahdi.h
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@@ -204,6 +204,13 @@ struct dahdi_pvt {
* \note Set from the "busydetect" value read in from chan_dahdi.conf
*/
unsigned int busydetect:1;
/*!
* \brief TRUE if Called Subscriber held is enabled.
* This allows a single incoming call to hold a DAHDI channel up,
* allowing a recipient to hang up an extension and pick up another
* phone on the same line without disconnecting the call.
*/
unsigned int calledsubscriberheld:1;
/*!
* \brief TRUE if call return is enabled.
* (*69, if your dialplan doesn't catch this first)