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Optional HOLD/RETRIEVE signaling for PTMP TE when the bridge goes on and off hold.

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Added the moh_signaling option to specify what to do when the channel's
bridged peer puts the ISDN channel on and off of hold.

Implemented as a FSM to control libpri ISDN signaling when the bridged
peer places the channel on and off of hold with the AST_CONTROL_HOLD and
AST_CONTROL_UNHOLD control frames.

JIRA SWP-2687
JIRA ABE-2691

Review:	https://reviewboard.asterisk.org/r/1063/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@300212 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2011-01-04 16:38:28 +00:00
parent 9be73e35de
commit 90177fe708
6 changed files with 1011 additions and 65 deletions
Download Patch File Download Diff File Expand all files Collapse all files

65
channels/sig_pri.h
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@@ -83,6 +83,67 @@ enum sig_pri_law {
SIG_PRI_ALAW
};
enum sig_pri_moh_signaling {
/*! Generate MOH to the remote party. */
SIG_PRI_MOH_SIGNALING_MOH,
/*! Send hold notification signaling to the remote party. */
SIG_PRI_MOH_SIGNALING_NOTIFY,
#if defined(HAVE_PRI_CALL_HOLD)
/*! Use HOLD/RETRIEVE signaling to release the B channel while on hold. */
SIG_PRI_MOH_SIGNALING_HOLD,
#endif /* defined(HAVE_PRI_CALL_HOLD) */
};
enum sig_pri_moh_state {
/*! Bridged peer has not put us on hold. */
SIG_PRI_MOH_STATE_IDLE,
/*! Bridged peer has put us on hold and we were to notify the remote party. */
SIG_PRI_MOH_STATE_NOTIFY,
/*! Bridged peer has put us on hold and we were to play MOH or HOLD/RETRIEVE fallback. */
SIG_PRI_MOH_STATE_MOH,
#if defined(HAVE_PRI_CALL_HOLD)
/*! Requesting to put channel on hold. */
SIG_PRI_MOH_STATE_HOLD_REQ,
/*! Trying to go on hold when bridged peer requested to unhold. */
SIG_PRI_MOH_STATE_PEND_UNHOLD,
/*! Channel is held. */
SIG_PRI_MOH_STATE_HOLD,
/*! Requesting to take channel out of hold. */
SIG_PRI_MOH_STATE_RETRIEVE_REQ,
/*! Trying to take channel out of hold when bridged peer requested to hold. */
SIG_PRI_MOH_STATE_PEND_HOLD,
/*! Failed to take the channel out of hold. No B channels were available? */
SIG_PRI_MOH_STATE_RETRIEVE_FAIL,
#endif /* defined(HAVE_PRI_CALL_HOLD) */
/*! Number of MOH states. Must be last in enum. */
SIG_PRI_MOH_STATE_NUM
};
enum sig_pri_moh_event {
/*! Reset the MOH state machine. (Because of hangup.) */
SIG_PRI_MOH_EVENT_RESET,
/*! Bridged peer placed this channel on hold. */
SIG_PRI_MOH_EVENT_HOLD,
/*! Bridged peer took this channel off hold. */
SIG_PRI_MOH_EVENT_UNHOLD,
#if defined(HAVE_PRI_CALL_HOLD)
/*! The hold request was successfully acknowledged. */
SIG_PRI_MOH_EVENT_HOLD_ACK,
/*! The hold request was rejected. */
SIG_PRI_MOH_EVENT_HOLD_REJ,
/*! The unhold request was successfully acknowledged. */
SIG_PRI_MOH_EVENT_RETRIEVE_ACK,
/*! The unhold request was rejected. */
SIG_PRI_MOH_EVENT_RETRIEVE_REJ,
/*! The remote party took this channel off hold. */
SIG_PRI_MOH_EVENT_REMOTE_RETRIEVE_ACK,
#endif /* defined(HAVE_PRI_CALL_HOLD) */
/*! Number of MOH events. Must be last in enum. */
SIG_PRI_MOH_EVENT_NUM
};
struct sig_pri_span;
struct sig_pri_callback {
@@ -201,6 +262,9 @@ struct sig_pri_chan {
/*! \brief Keypad digits that came in with the SETUP message. */
char keypad_digits[AST_MAX_EXTENSION];
#endif /* defined(HAVE_PRI_SETUP_KEYPAD) */
/*! Music class suggested with AST_CONTROL_HOLD. */
char moh_suggested[MAX_MUSICCLASS];
enum sig_pri_moh_state moh_state;
#if defined(HAVE_PRI_AOC_EVENTS)
struct pri_subcmd_aoc_e aoc_e;
@@ -330,6 +394,7 @@ struct sig_pri_span {
char localprefix[20]; /*!< area access code + area code ('0'+area code for european dialplans) */
char privateprefix[20]; /*!< for private dialplans */
char unknownprefix[20]; /*!< for unknown dialplans */
enum sig_pri_moh_signaling moh_signaling;
long resetinterval; /*!< Interval (in seconds) for resetting unused channels */
#if defined(HAVE_PRI_MWI)
/*! \brief Active MWI mailboxes */