mirror of https://github.com/asterisk/asterisk
Extract the SS7 specific code out of chan_dahdi like what was done to ISDN/PRI and analog signaling. The new SS7 structures were modeled on sig_pri. The changes to sig_pri are an enhancement and a bug fix made possible because SS7 was extracted. 1) The sig_pri TRANSFERCAPABILITY channel variable should have been set unconditionally in sig_pri_new_ast_channel(). 2) SS7/PRI transfer capability interaction in dahdi_new() fixed because of SS7 extraction. 3) Module ref count error in dahdi_new() if startpbx failed to start the PBX for some reason. Review: https://reviewboard.asterisk.org/r/661/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@268774 65c4cc65-6c06-0410-ace0-fbb531ad65f3certified/1.8.6
Richard Mudgett
15 years ago
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2010 Digium, Inc.
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*
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* Richard Mudgett <rmudgett@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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* \brief Interface header for SS7 signaling module.
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*
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* \author Matthew Fredrickson <creslin@digium.com>
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* \author Richard Mudgett <rmudgett@digium.com>
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*
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* See Also:
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* \arg \ref AstCREDITS
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*/
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#ifndef _ASTERISK_SIG_SS7_H
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#define _ASTERISK_SIG_SS7_H
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#include "asterisk/channel.h"
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#include <libss7.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* ------------------------------------------------------------------- */
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/*! SS7 debug message flags when SS7 debugging is turned on at the command line. */
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#define SIG_SS7_DEBUG \
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(SS7_DEBUG_MTP2 | SS7_DEBUG_MTP3 | SS7_DEBUG_ISUP)
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#if 0
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/*! SS7 debug message flags set on initial startup. */
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#define SIG_SS7_DEBUG_DEFAULT SIG_SS7_DEBUG
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#else
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/*! SS7 debug message flags set on initial startup. */
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#define SIG_SS7_DEBUG_DEFAULT 0
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#endif
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/* ------------------------------------------------------------------- */
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#define SIG_SS7_NUM_DCHANS 4 /*!< No more than 4 d-channels */
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#define SIG_SS7_MAX_CHANNELS 672 /*!< No more than a DS3 per trunk group */
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#define SIG_SS7 (0x1000000 | DAHDI_SIG_CLEAR)
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#define LINKSTATE_INALARM (1 << 0)
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#define LINKSTATE_STARTING (1 << 1)
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#define LINKSTATE_UP (1 << 2)
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#define LINKSTATE_DOWN (1 << 3)
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#define SS7_NAI_DYNAMIC -1
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#define LINKSET_FLAG_EXPLICITACM (1 << 0)
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enum sig_ss7_tone {
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SIG_SS7_TONE_RINGTONE = 0,
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SIG_SS7_TONE_STUTTER,
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SIG_SS7_TONE_CONGESTION,
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SIG_SS7_TONE_DIALTONE,
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SIG_SS7_TONE_DIALRECALL,
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SIG_SS7_TONE_INFO,
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SIG_SS7_TONE_BUSY,
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};
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enum sig_ss7_law {
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SIG_SS7_DEFLAW = 0,
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SIG_SS7_ULAW,
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SIG_SS7_ALAW
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};
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struct sig_ss7_linkset;
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struct sig_ss7_callback {
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/* Unlock the private in the signaling private structure. */
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void (* const unlock_private)(void *pvt);
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/* Lock the private in the signaling private structure. */
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void (* const lock_private)(void *pvt);
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int (* const set_echocanceller)(void *pvt, int enable);
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void (* const set_loopback)(void *pvt, int enable);
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struct ast_channel * (* const new_ast_channel)(void *pvt, int state, enum sig_ss7_law law, char *exten, const struct ast_channel *requestor);
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int (* const play_tone)(void *pvt, enum sig_ss7_tone tone);
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void (* const handle_link_exception)(struct sig_ss7_linkset *linkset, int which);
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void (* const set_alarm)(void *pvt, int in_alarm);
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void (* const set_dialing)(void *pvt, int is_dialing);
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void (* const set_digital)(void *pvt, int is_digital);
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void (* const set_inservice)(void *pvt, int is_inservice);
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void (* const set_locallyblocked)(void *pvt, int is_blocked);
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void (* const set_remotelyblocked)(void *pvt, int is_blocked);
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void (* const set_callerid)(void *pvt, const struct ast_party_caller *caller);
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void (* const set_dnid)(void *pvt, const char *dnid);
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void (* const queue_control)(void *pvt, int subclass);
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};
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struct sig_ss7_chan {
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struct sig_ss7_callback *calls;
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void *chan_pvt; /*!< Private structure of the user of this module. */
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struct sig_ss7_linkset *ss7;
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struct ast_channel *owner;
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/*! \brief Opaque libss7 call control structure */
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struct isup_call *ss7call;
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int channel; /*!< Channel Number */
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int cic; /*!< CIC associated with channel */
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unsigned int dpc; /*!< CIC's DPC */
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/* Options to be set by user */
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/*!
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* \brief Number of most significant digits/characters to strip from the dialed number.
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* \note Feature is deprecated. Use dialplan logic.
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*/
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int stripmsd;
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/*!
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* \brief TRUE if the outgoing caller ID is blocked/hidden.
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*/
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unsigned int hidecallerid:1;
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/*! \brief TRUE if caller ID is used on this channel. */
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unsigned int use_callerid:1;
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/*!
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* \brief TRUE if we will use the calling presentation setting
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* from the Asterisk channel for outgoing calls.
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*/
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unsigned int use_callingpres:1;
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unsigned int immediate:1; /*!< Answer before getting digits? */
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/*! \brief TRUE if the channel is locally blocked. Set by user and link. */
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unsigned int locallyblocked:1;
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/*! \brief TRUE if the channel is remotely blocked. Set by user and link. */
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unsigned int remotelyblocked:1;
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char context[AST_MAX_CONTEXT];
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char mohinterpret[MAX_MUSICCLASS];
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/* Options to be checked by user */
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int cid_ani2; /*!< Automatic Number Identification number (Alternate PRI caller ID number) */
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int cid_ton; /*!< Type Of Number (TON) */
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int callingpres; /*!< The value of calling presentation that we're going to use when placing a PRI call */
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char cid_num[AST_MAX_EXTENSION];
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char cid_subaddr[AST_MAX_EXTENSION];/*!< XXX SS7 may not support. */
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char cid_name[AST_MAX_EXTENSION];
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char cid_ani[AST_MAX_EXTENSION];
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char exten[AST_MAX_EXTENSION];
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/* Options to be checked by user that are stuffed into channel variables. */
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char charge_number[50];
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char gen_add_number[50];
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char gen_dig_number[50];
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char orig_called_num[50];
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char redirecting_num[50];
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char generic_name[50];
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unsigned char gen_add_num_plan;
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unsigned char gen_add_nai;
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unsigned char gen_add_pres_ind;
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unsigned char gen_add_type;
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unsigned char gen_dig_type;
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unsigned char gen_dig_scheme;
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char jip_number[50];
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#if 0
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unsigned char lspi_type;
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unsigned char lspi_scheme;
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unsigned char lspi_context;
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#endif
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char lspi_ident[50];
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unsigned int call_ref_ident;
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unsigned int call_ref_pc;
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unsigned char calling_party_cat;
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/*
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* Channel status bits.
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*/
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/*! TRUE if channel is associated with a link that is down. */
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unsigned int inalarm:1;
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/*! TRUE if this channel is being used for an outgoing call. */
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unsigned int outgoing:1;
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/*!
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* \brief TRUE if call is in a proceeding state.
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* The call has started working its way through the network.
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*/
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unsigned int proceeding:1;
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/*! \brief TRUE if the call has seen progress through the network. */
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unsigned int progress:1;
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/*! \brief TRUE if channel is alerting/ringing */
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unsigned int alerting:1;
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/*! \brief TRUE if the call has already gone/hungup */
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unsigned int alreadyhungup:1;
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/*! \brief XXX BOOLEAN Purpose??? */
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unsigned int rlt:1;
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/*! TRUE if this channel is in loopback. */
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unsigned int loopedback:1;
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};
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struct sig_ss7_linkset {
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pthread_t master; /*!< Thread of master */
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ast_mutex_t lock; /*!< libss7 access lock */
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struct sig_ss7_callback *calls;
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struct ss7 *ss7;
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struct sig_ss7_chan *pvts[SIG_SS7_MAX_CHANNELS];/*!< Member channel pvt structs */
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int fds[SIG_SS7_NUM_DCHANS];
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int numsigchans;
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int linkstate[SIG_SS7_NUM_DCHANS];
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int numchans;
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int span; /*!< span number put into user output messages */
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enum {
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LINKSET_STATE_DOWN = 0,
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LINKSET_STATE_UP
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} state;
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/* Options to be set by user */
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int flags; /*!< Linkset flags (LINKSET_FLAG_EXPLICITACM) */
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int type; /*!< SS7 type ITU/ANSI. Used for companding selection. */
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char called_nai; /*!< Called Nature of Address Indicator */
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char calling_nai; /*!< Calling Nature of Address Indicator */
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char internationalprefix[10]; /*!< country access code ('00' for european dialplans) */
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char nationalprefix[10]; /*!< area access code ('0' for european dialplans) */
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char subscriberprefix[20]; /*!< area access code + area code ('0'+area code for european dialplans) */
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char unknownprefix[20]; /*!< for unknown dialplans */
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};
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void sig_ss7_set_alarm(struct sig_ss7_chan *p, int in_alarm);
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void *ss7_linkset(void *data);
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void sig_ss7_link_alarm(struct sig_ss7_linkset *linkset, int which);
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void sig_ss7_link_noalarm(struct sig_ss7_linkset *linkset, int which);
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int sig_ss7_add_sigchan(struct sig_ss7_linkset *linkset, int which, int ss7type, int transport, int inalarm, int networkindicator, int pointcode, int adjpointcode);
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int sig_ss7_available(struct sig_ss7_chan *p);
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int sig_ss7_call(struct sig_ss7_chan *p, struct ast_channel *ast, char *rdest);
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int sig_ss7_hangup(struct sig_ss7_chan *p, struct ast_channel *ast);
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int sig_ss7_answer(struct sig_ss7_chan *p, struct ast_channel *ast);
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int sig_ss7_indicate(struct sig_ss7_chan *p, struct ast_channel *chan, int condition, const void *data, size_t datalen);
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struct ast_channel *sig_ss7_request(struct sig_ss7_chan *p, enum sig_ss7_law law, const struct ast_channel *requestor, int transfercapability);
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void sig_ss7_chan_delete(struct sig_ss7_chan *doomed);
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struct sig_ss7_chan *sig_ss7_chan_new(void *pvt_data, struct sig_ss7_callback *callback, struct sig_ss7_linkset *ss7);
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/* ------------------------------------------------------------------- */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ASTERISK_SIG_SS7_H */
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/* ------------------------------------------------------------------- */
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/* end sig_ss7.h */
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