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520 lines
18 KiB
520 lines
18 KiB
/*
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* libpri: An implementation of Primary Rate ISDN
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*
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* Written by Mark Spencer <markster@digium.com>
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*
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* Copyright (C) 2001, Digium, Inc.
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* All Rights Reserved.
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*/
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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 as published by the
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* Free Software Foundation. See the LICENSE file included with
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* this program for more details.
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*
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* In addition, when this program is distributed with Asterisk in
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* any form that would qualify as a 'combined work' or as a
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* 'derivative work' (but not mere aggregation), you can redistribute
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* and/or modify the combination under the terms of the license
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* provided with that copy of Asterisk, instead of the license
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* terms granted here.
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*/
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#ifndef _PRI_Q931_H
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#define _PRI_Q931_H
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typedef enum q931_mode {
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UNKNOWN_MODE,
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CIRCUIT_MODE,
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PACKET_MODE
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} q931_mode;
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typedef struct q931_h {
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unsigned char raw[0];
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u_int8_t pd; /* Protocol Discriminator */
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#if __BYTE_ORDER == __BIG_ENDIAN
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u_int8_t x0:4;
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u_int8_t crlen:4;/*!< Call reference length */
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#else
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u_int8_t crlen:4;/*!< Call reference length */
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u_int8_t x0:4;
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#endif
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u_int8_t contents[0];
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u_int8_t crv[3];/*!< Call reference value */
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} __attribute__ ((packed)) q931_h;
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/* Message type header */
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typedef struct q931_mh {
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#if __BYTE_ORDER == __BIG_ENDIAN
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u_int8_t f:1;
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u_int8_t msg:7;
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#else
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u_int8_t msg:7;
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u_int8_t f:1;
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#endif
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u_int8_t data[0];
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} __attribute__ ((packed)) q931_mh;
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/* Information element format */
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typedef struct q931_ie {
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u_int8_t ie;
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u_int8_t len;
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u_int8_t data[0];
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} __attribute__ ((packed)) q931_ie;
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#define Q931_RES_HAVEEVENT (1 << 0)
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#define Q931_RES_INERRROR (1 << 1)
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#define Q931_PROTOCOL_DISCRIMINATOR 0x08
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#define GR303_PROTOCOL_DISCRIMINATOR 0x4f
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/* AT&T Maintenance Protocol Discriminator */
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#define MAINTENANCE_PROTOCOL_DISCRIMINATOR_1 0x03
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/* National Maintenance Protocol Discriminator */
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#define MAINTENANCE_PROTOCOL_DISCRIMINATOR_2 0x43
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/* Q.931 / National ISDN Message Types */
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/*! Send this facility APDU on the next message to go out. */
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#define Q931_ANY_MESSAGE -1
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/* Call Establishment Messages */
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#define Q931_ALERTING 0x01
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#define Q931_CALL_PROCEEDING 0x02
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#define Q931_CONNECT 0x07
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#define Q931_CONNECT_ACKNOWLEDGE 0x0f
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#define Q931_PROGRESS 0x03
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#define Q931_SETUP 0x05
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#define Q931_SETUP_ACKNOWLEDGE 0x0d
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/* Call Disestablishment Messages */
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#define Q931_DISCONNECT 0x45
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#define Q931_RELEASE 0x4d
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#define Q931_RELEASE_COMPLETE 0x5a
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#define Q931_RESTART 0x46
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#define Q931_RESTART_ACKNOWLEDGE 0x4e
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/* Miscellaneous Messages */
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#define Q931_STATUS 0x7d
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#define Q931_STATUS_ENQUIRY 0x75
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#define Q931_USER_INFORMATION 0x20
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#define Q931_SEGMENT 0x60
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#define Q931_CONGESTION_CONTROL 0x79
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#define Q931_INFORMATION 0x7b
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#define Q931_FACILITY 0x62
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#define Q931_REGISTER 0x64 /* Q.932 */
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#define Q931_NOTIFY 0x6e
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/* Call Management Messages */
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#define Q931_HOLD 0x24
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#define Q931_HOLD_ACKNOWLEDGE 0x28
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#define Q931_HOLD_REJECT 0x30
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#define Q931_RETRIEVE 0x31
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#define Q931_RETRIEVE_ACKNOWLEDGE 0x33
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#define Q931_RETRIEVE_REJECT 0x37
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#define Q931_RESUME 0x26
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#define Q931_RESUME_ACKNOWLEDGE 0x2e
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#define Q931_RESUME_REJECT 0x22
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#define Q931_SUSPEND 0x25
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#define Q931_SUSPEND_ACKNOWLEDGE 0x2d
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#define Q931_SUSPEND_REJECT 0x21
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/* Maintenance messages (codeset 0 only) */
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#define ATT_SERVICE 0x0f
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#define ATT_SERVICE_ACKNOWLEDGE 0x07
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#define NATIONAL_SERVICE 0x07
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#define NATIONAL_SERVICE_ACKNOWLEDGE 0x0f
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#define SERVICE_CHANGE_STATUS_INSERVICE 0
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#define SERVICE_CHANGE_STATUS_LOOPBACK 1 /* not supported */
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#define SERVICE_CHANGE_STATUS_OUTOFSERVICE 2
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#define SERVICE_CHANGE_STATUS_REQCONTINUITYCHECK 3 /* not supported */
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#define SERVICE_CHANGE_STATUS_SHUTDOWN 4 /* not supported */
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/* Q.931 / National ISDN Information Elements */
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#define Q931_LOCKING_SHIFT 0x90
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#define Q931_NON_LOCKING_SHIFT 0x98
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#define Q931_BEARER_CAPABILITY 0x04
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#define Q931_CAUSE 0x08
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#define Q931_IE_CALL_STATE 0x14
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#define Q931_CHANNEL_IDENT 0x18
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#define Q931_PROGRESS_INDICATOR 0x1e
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#define Q931_NETWORK_SPEC_FAC 0x20
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#define Q931_CALLING_PARTY_CATEGORY (0x32 | Q931_CODESET(5))
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#define Q931_INFORMATION_RATE 0x40
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#define Q931_TRANSIT_DELAY 0x42
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#define Q931_TRANS_DELAY_SELECT 0x43
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#define Q931_BINARY_PARAMETERS 0x44
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#define Q931_WINDOW_SIZE 0x45
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#define Q931_PACKET_SIZE 0x46
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#define Q931_CLOSED_USER_GROUP 0x47
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#define Q931_REVERSE_CHARGE_INDIC 0x4a
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#define Q931_CALLING_PARTY_NUMBER 0x6c
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#define Q931_CALLING_PARTY_SUBADDR 0x6d
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#define Q931_CALLED_PARTY_NUMBER 0x70
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#define Q931_CALLED_PARTY_SUBADDR 0x71
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#define Q931_REDIRECTING_NUMBER 0x74
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#define Q931_REDIRECTING_SUBADDR 0x75
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#define Q931_TRANSIT_NET_SELECT 0x78
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#define Q931_RESTART_INDICATOR 0x79
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#define Q931_LOW_LAYER_COMPAT 0x7c
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#define Q931_HIGH_LAYER_COMPAT 0x7d
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#define Q931_CODESET(x) ((x) << 8)
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#define Q931_IE_CODESET(x) ((x) >> 8)
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#define Q931_IE_IE(x) ((x) & 0xff)
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#define Q931_FULL_IE(codeset, ie) (((codeset) << 8) | ((ie) & 0xff))
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#define Q931_DISPLAY 0x28
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#define Q931_IE_SEGMENTED_MSG 0x00
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#define Q931_IE_CHANGE_STATUS 0x01
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#define Q931_IE_ORIGINATING_LINE_INFO (0x01 | Q931_CODESET(6))
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#define Q931_IE_CONNECTED_ADDR 0x0c
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#define Q931_IE_CONNECTED_NUM 0x4c
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#define Q931_IE_CONNECTED_SUBADDR 0x4d
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#define Q931_IE_CALL_IDENTITY 0x10
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#define Q931_IE_FACILITY 0x1c
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#define Q931_IE_ENDPOINT_ID 0x26
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#define Q931_IE_NOTIFY_IND 0x27
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#define Q931_IE_TIME_DATE 0x29
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#define Q931_IE_KEYPAD_FACILITY 0x2c
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#define Q931_IE_CALL_STATUS 0x2d
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#define Q931_IE_UPDATE 0x31
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#define Q931_IE_INFO_REQUEST 0x32
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#define Q931_IE_SIGNAL 0x34
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#define Q931_IE_SWITCHHOOK 0x36
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#define Q931_IE_GENERIC_DIGITS (0x37 | Q931_CODESET(6))
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#define Q931_IE_FEATURE_ACTIVATE 0x38
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#define Q931_IE_FEATURE_IND 0x39
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#define Q931_IE_ORIGINAL_CALLED_NUMBER 0x73
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#define Q931_IE_REDIRECTION_NUMBER 0x76
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#define Q931_IE_REDIRECTION_SUBADDR 0x77
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#define Q931_IE_USER_USER_FACILITY 0x7A
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#define Q931_IE_USER_USER 0x7E
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#define Q931_IE_ESCAPE_FOR_EXT 0x7F
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/*! Q.931 call states */
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enum Q931_CALL_STATE {
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/*!
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* \details
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* null state (U0):
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* No call exists.
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* \details
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* null state (N0):
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* No call exists.
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*/
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Q931_CALL_STATE_NULL = 0,
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/*!
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* \details
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* call initiated (U1):
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* This state exists for an outgoing call, when the user requests
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* call establishment from the network.
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* \details
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* call initiated (N1):
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* This state exists for an outgoing call when the network has received
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* a call establishment request but has not yet responded.
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*/
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Q931_CALL_STATE_CALL_INITIATED = 1,
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/*!
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* \details
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* overlap sending (U2):
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* This state exists for an outgoing call when the user has
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* received acknowledgement of the call establishment request which
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* permits the user to send additional call information to the network
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* in overlap mode.
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* \details
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* overlap sending (N2):
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* This state exists for an outgoing call when the network has acknowledged
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* the call establishment request and is prepared to receive additional
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* call information (if any) in overlap mode.
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*/
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Q931_CALL_STATE_OVERLAP_SENDING = 2,
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/*!
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* \details
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* outgoing call proceeding (U3):
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* This state exists for an outgoing call when the user has
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* received acknowledgement that the network has received all
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* call information necessary to effect call establishment.
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* \details
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* outgoing call proceeding (N3):
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* This state exists for an outgoing call when the network has sent
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* acknowledgement that the network has received all call information
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* necessary to effect call establishment.
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*/
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Q931_CALL_STATE_OUTGOING_CALL_PROCEEDING = 3,
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/*!
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* \details
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* call delivered (U4):
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* This state exists for an outgoing call when the calling user has
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* received an indication that remote user alerting has been initiated.
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* \details
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* call delivered (N4):
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* This state exists for an outgoing call when the network has indicated
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* that remote user alerting has been initiated.
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*/
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Q931_CALL_STATE_CALL_DELIVERED = 4,
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/*!
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* \details
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* call present (U6):
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* This state exists for an incoming call when the user has received a
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* call establishment request but has not yet responded.
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* \details
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* call present (N6):
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* This state exists for an incoming call when the network has sent a
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* call establishment request but has not yet received a satisfactory
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* response.
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*/
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Q931_CALL_STATE_CALL_PRESENT = 6,
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/*!
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* \details
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* call received (U7):
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* This state exists for an incoming call when the user has indicated
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* alerting but has not yet answered.
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* \details
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* call received (N7):
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* This state exists for an incoming call when the network has received
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* an indication that the user is alerting but has not yet received an
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* answer.
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*/
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Q931_CALL_STATE_CALL_RECEIVED = 7,
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/*!
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* \details
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* connect request (U8):
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* This state exists for an incoming call when the user has answered
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* the call and is waiting to be awarded the call.
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* \details
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* connect request (N8):
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* This state exists for an incoming call when the network has received
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* an answer but the network has not yet awarded the call.
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*/
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Q931_CALL_STATE_CONNECT_REQUEST = 8,
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/*!
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* \details
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* incoming call proceeding (U9):
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* This state exists for an incoming call when the user has sent
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* acknowledgement that the user has received all call information
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* necessary to effect call establishment.
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* \details
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* incoming call proceeding (N9):
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* This state exists for an incoming call when the network has received
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* acknowledgement that the user has received all call information
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* necessary to effect call establishment.
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*/
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Q931_CALL_STATE_INCOMING_CALL_PROCEEDING = 9,
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/*!
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* \details
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* active (U10):
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* This state exists for an incoming call when the user has received
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* an acknowledgement from the network that the user has been awarded
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* the call. This state exists for an outgoing call when the user has
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* received an indication that the remote user has answered the call.
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* \details
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* active (N10):
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* This state exists for an incoming call when the network has awarded
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* the call to the called user. This state exists for an outgoing call
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* when the network has indicated that the remote user has answered
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* the call.
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*/
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Q931_CALL_STATE_ACTIVE = 10,
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/*!
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* \details
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* disconnect request (U11):
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* This state exists when the user has requested the network to clear
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* the end-to-end connection (if any) and is waiting for a response.
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* \details
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* disconnect request (N11):
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* This state exists when the network has received a request from the
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* user to clear the end-to-end connection (if any).
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*/
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Q931_CALL_STATE_DISCONNECT_REQUEST = 11,
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/*!
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* \details
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* disconnect indication (U12):
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* This state exists when the user has received an invitation to
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* disconnect because the network has disconnected the end-to-end
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* connection (if any).
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* \details
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* disconnect indication (N12):
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* This state exists when the network has disconnected the end-to-end
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* connection (if any) and has sent an invitation to disconnect the
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* user-network connection.
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*/
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Q931_CALL_STATE_DISCONNECT_INDICATION = 12,
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/*!
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* \details
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* suspend request (U15):
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* This state exists when the user has requested the network to suspend
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* the call and is waiting for a response.
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* \details
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* suspend request (N15):
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* This state exists when the network has received a request to suspend
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* the call but has not yet responded.
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*/
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Q931_CALL_STATE_SUSPEND_REQUEST = 15,
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/*!
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* \details
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* resume request (U17):
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* This state exists when the user has requested the network to resume
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* a previously suspended call and is waiting for a response.
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* \details
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* resume request (N17):
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* This state exists when the network has received a request to resume
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* a previously suspended call but has not yet responded.
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*/
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Q931_CALL_STATE_RESUME_REQUEST = 17,
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/*!
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* \details
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* release request (U19):
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* This state exists when the user has requested the network to release
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* and is waiting for a response.
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* \details
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* release request (N19):
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* This state exists when the network has requested the user to release
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* and is waiting for a response.
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*/
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Q931_CALL_STATE_RELEASE_REQUEST = 19,
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/*!
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* \details
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* call abort (N22):
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* This state exists for an incoming call for the point-to-multipoint
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* configuration when the call is being cleared before any user has been
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* awarded the call.
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*/
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Q931_CALL_STATE_CALL_ABORT = 22,
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/*!
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* \details
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* overlap receiving (U25):
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* This state exists for an incoming call when the user has acknowledged
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* the call establishment request from the network and is prepared to
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* receive additional call information (if any) in overlap mode.
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* \details
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* overlap receiving (N25):
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* This state exists for an incoming call when the network has received
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* acknowledgement of the call establishment request which permits the
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* network to send additional call information (if any) in the overlap
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* mode.
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*/
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Q931_CALL_STATE_OVERLAP_RECEIVING = 25,
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/*!
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* \details
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* call independent service (U31): (From Q.932)
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* This state exists when a call independent supplementary service
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* signalling connection is established.
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* \details
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* call independent service (N31): (From Q.932)
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* This state exists when a call independent supplementary service
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* signalling connection is established.
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*/
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Q931_CALL_STATE_CALL_INDEPENDENT_SERVICE = 31,
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Q931_CALL_STATE_RESTART_REQUEST = 61,
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Q931_CALL_STATE_RESTART = 62,
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/*!
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* \details
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* Call state has not been set.
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* Call state does not exist.
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* Call state not initialized.
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* Call state internal use only.
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*/
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Q931_CALL_STATE_NOT_SET = 0xFF,
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};
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/*! Q.931 call establishment state ranking for competing calls in PTMP NT mode. */
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enum Q931_RANKED_CALL_STATE {
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/*! Call is present but has no response yet. */
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Q931_RANKED_CALL_STATE_PRESENT,
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/*! Call is collecting digits. */
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Q931_RANKED_CALL_STATE_OVERLAP,
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/*! Call routing is happening. */
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Q931_RANKED_CALL_STATE_PROCEEDING,
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/*! Called party is being alerted of the call. */
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Q931_RANKED_CALL_STATE_ALERTING,
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/*! Call is connected. A winner has been declared. */
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Q931_RANKED_CALL_STATE_CONNECT,
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/*! Call is in some non-call establishment state (likely disconnecting). */
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Q931_RANKED_CALL_STATE_OTHER,
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/*! Master call is aborting. */
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Q931_RANKED_CALL_STATE_ABORT,
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};
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/* EuroISDN */
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#define Q931_SENDING_COMPLETE 0xa1
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extern int maintenance_service(struct pri *pri, int span, int channel, int changestatus);
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/* Q.SIG specific */
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#define QSIG_IE_TRANSIT_COUNT 0x31
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int q931_receive(struct q921_link *link, q931_h *h, int len);
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extern int q931_alerting(struct pri *pri, q931_call *call, int channel, int info);
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extern int q931_call_progress_with_cause(struct pri *pri, q931_call *call, int channel, int info, int cause);
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extern int q931_call_progress(struct pri *pri, q931_call *call, int channel, int info);
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extern int q931_notify(struct pri *pri, q931_call *call, int channel, int info);
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extern int q931_call_proceeding(struct pri *pri, q931_call *call, int channel, int info);
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extern int q931_setup_ack(struct pri *ctrl, q931_call *c, int channel, int nonisdn, int inband);
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extern int q931_information(struct pri *pri, q931_call *call, char digit);
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extern int q931_keypad_facility(struct pri *pri, q931_call *call, const char *digits);
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extern int q931_connect(struct pri *pri, q931_call *call, int channel, int nonisdn);
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int q931_connect_acknowledge(struct pri *ctrl, q931_call *call, int channel);
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extern int q931_release(struct pri *pri, q931_call *call, int cause);
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extern int q931_disconnect(struct pri *pri, q931_call *call, int cause);
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extern int q931_hangup(struct pri *pri, q931_call *call, int cause);
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extern int q931_restart(struct pri *pri, int channel);
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extern int q931_facility(struct pri *pri, q931_call *call);
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extern int q931_call_getcrv(struct pri *pri, q931_call *call, int *callmode);
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extern int q931_call_setcrv(struct pri *pri, q931_call *call, int crv, int callmode);
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struct q931_call *q931_new_call(struct pri *ctrl);
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extern int q931_setup(struct pri *pri, q931_call *c, struct pri_sr *req);
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int q931_register(struct pri *ctrl, q931_call *call);
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void q931_dump(struct pri *ctrl, int tei, q931_h *h, int len, int txrx);
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void q931_destroycall(struct pri *pri, q931_call *c);
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enum Q931_DL_EVENT {
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Q931_DL_EVENT_NONE,
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Q931_DL_EVENT_DL_ESTABLISH_IND,
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Q931_DL_EVENT_DL_ESTABLISH_CONFIRM,
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Q931_DL_EVENT_DL_RELEASE_IND,
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Q931_DL_EVENT_DL_RELEASE_CONFIRM,
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Q931_DL_EVENT_TEI_REMOVAL,
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};
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void q931_dl_event(struct q921_link *link, enum Q931_DL_EVENT event);
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int q931_send_hold(struct pri *ctrl, struct q931_call *call);
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int q931_send_hold_ack(struct pri *ctrl, struct q931_call *call);
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int q931_send_hold_rej(struct pri *ctrl, struct q931_call *call, int cause);
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int q931_send_retrieve(struct pri *ctrl, struct q931_call *call, int channel);
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int q931_send_retrieve_ack(struct pri *ctrl, struct q931_call *call, int channel);
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int q931_send_retrieve_rej(struct pri *ctrl, struct q931_call *call, int cause);
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#endif
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