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libpri/pri_q931.h
Dwayne M. Hubbard d9af5b25ce Add SERVICE message support for the 'national' switchtype 
This set of changes integrates SERVICE message support for the 
'national' switchtype.  The 'national' switchtype uses the 0x43
protocol discriminator.  The 'national' SERVICE/SERVICE ACKNOWLEDGE
and AT&T SERVICE/SERVICE ACKNOWLEDGE message values are opposite
of each other.  This is handled by first determining which
protocol discriminator is in use, then responding with the appropriate
SERVICE ACKNOWLEDGE value.  AT&T SERVICE messages use the
0x3 protocol discriminator.

(closes issue #15803)
Reported by: dhubbard

Review: https://reviewboard.asterisk.org/r/347/


git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@1072 2fbb986a-6c06-0410-b554-c9c1f0a7f128
2009-09-13 22:54:10 +00:00

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/*
* libpri: An implementation of Primary Rate ISDN
*
* Written by Mark Spencer <markster@digium.com>
*
* Copyright (C) 2001, Digium, Inc.
* All Rights Reserved.
*/
/*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2 as published by the
* Free Software Foundation. See the LICENSE file included with
* this program for more details.
*
* In addition, when this program is distributed with Asterisk in
* any form that would qualify as a 'combined work' or as a
* 'derivative work' (but not mere aggregation), you can redistribute
* and/or modify the combination under the terms of the license
* provided with that copy of Asterisk, instead of the license
* terms granted here.
*/
#ifndef _PRI_Q931_H
#define _PRI_Q931_H
typedef enum q931_mode {
UNKNOWN_MODE,
CIRCUIT_MODE,
PACKET_MODE
} q931_mode;
typedef struct q931_h {
unsigned char raw[0];
u_int8_t pd; /* Protocol Discriminator */
#if __BYTE_ORDER == __BIG_ENDIAN
u_int8_t x0:4;
u_int8_t crlen:4;/*!< Call reference length */
#else
u_int8_t crlen:4;/*!< Call reference length */
u_int8_t x0:4;
#endif
u_int8_t contents[0];
u_int8_t crv[3];/*!< Call reference value */
} __attribute__ ((packed)) q931_h;
/* Message type header */
typedef struct q931_mh {
#if __BYTE_ORDER == __BIG_ENDIAN
u_int8_t f:1;
u_int8_t msg:7;
#else
u_int8_t msg:7;
u_int8_t f:1;
#endif
u_int8_t data[0];
} __attribute__ ((packed)) q931_mh;
/* Information element format */
typedef struct q931_ie {
u_int8_t ie;
u_int8_t len;
u_int8_t data[0];
} __attribute__ ((packed)) q931_ie;
#define Q931_RES_HAVEEVENT (1 << 0)
#define Q931_RES_INERRROR (1 << 1)
#define Q931_PROTOCOL_DISCRIMINATOR 0x08
#define GR303_PROTOCOL_DISCRIMINATOR 0x4f
/* AT&T Maintenance Protocol Discriminator */
#define MAINTENANCE_PROTOCOL_DISCRIMINATOR_1 0x03
/* National Maintenance Protocol Discriminator */
#define MAINTENANCE_PROTOCOL_DISCRIMINATOR_2 0x43
/* Q.931 / National ISDN Message Types */
/* Call Establishment Messages */
#define Q931_ALERTING 0x01
#define Q931_CALL_PROCEEDING 0x02
#define Q931_CONNECT 0x07
#define Q931_CONNECT_ACKNOWLEDGE 0x0f
#define Q931_PROGRESS 0x03
#define Q931_SETUP 0x05
#define Q931_SETUP_ACKNOWLEDGE 0x0d
/* Call Disestablishment Messages */
#define Q931_DISCONNECT 0x45
#define Q931_RELEASE 0x4d
#define Q931_RELEASE_COMPLETE 0x5a
#define Q931_RESTART 0x46
#define Q931_RESTART_ACKNOWLEDGE 0x4e
/* Miscellaneous Messages */
#define Q931_STATUS 0x7d
#define Q931_STATUS_ENQUIRY 0x75
#define Q931_USER_INFORMATION 0x20
#define Q931_SEGMENT 0x60
#define Q931_CONGESTION_CONTROL 0x79
#define Q931_INFORMATION 0x7b
#define Q931_FACILITY 0x62
#define Q931_NOTIFY 0x6e
/* Call Management Messages */
#define Q931_HOLD 0x24
#define Q931_HOLD_ACKNOWLEDGE 0x28
#define Q931_HOLD_REJECT 0x30
#define Q931_RETRIEVE 0x31
#define Q931_RETRIEVE_ACKNOWLEDGE 0x33
#define Q931_RETRIEVE_REJECT 0x37
#define Q931_RESUME 0x26
#define Q931_RESUME_ACKNOWLEDGE 0x2e
#define Q931_RESUME_REJECT 0x22
#define Q931_SUSPEND 0x25
#define Q931_SUSPEND_ACKNOWLEDGE 0x2d
#define Q931_SUSPEND_REJECT 0x21
/* Maintenance messages (codeset 0 only) */
#define ATT_SERVICE 0x0f
#define ATT_SERVICE_ACKNOWLEDGE 0x07
#define NATIONAL_SERVICE 0x07
#define NATIONAL_SERVICE_ACKNOWLEDGE 0x0f
#define SERVICE_CHANGE_STATUS_INSERVICE 0
#define SERVICE_CHANGE_STATUS_LOOPBACK 1 /* not supported */
#define SERVICE_CHANGE_STATUS_OUTOFSERVICE 2
#define SERVICE_CHANGE_STATUS_REQCONTINUITYCHECK 3 /* not supported */
#define SERVICE_CHANGE_STATUS_SHUTDOWN 4 /* not supported */
/* Special codeset 0 IE */
#define NATIONAL_CHANGE_STATUS 0x1
/* Q.931 / National ISDN Information Elements */
#define Q931_LOCKING_SHIFT 0x90
#define Q931_NON_LOCKING_SHIFT 0x98
#define Q931_BEARER_CAPABILITY 0x04
#define Q931_CAUSE 0x08
#define Q931_IE_CALL_STATE 0x14
#define Q931_CHANNEL_IDENT 0x18
#define Q931_PROGRESS_INDICATOR 0x1e
#define Q931_NETWORK_SPEC_FAC 0x20
#define Q931_INFORMATION_RATE 0x40
#define Q931_TRANSIT_DELAY 0x42
#define Q931_TRANS_DELAY_SELECT 0x43
#define Q931_BINARY_PARAMETERS 0x44
#define Q931_WINDOW_SIZE 0x45
#define Q931_PACKET_SIZE 0x46
#define Q931_CLOSED_USER_GROUP 0x47
#define Q931_REVERSE_CHARGE_INDIC 0x4a
#define Q931_CALLING_PARTY_NUMBER 0x6c
#define Q931_CALLING_PARTY_SUBADDR 0x6d
#define Q931_CALLED_PARTY_NUMBER 0x70
#define Q931_CALLED_PARTY_SUBADDR 0x71
#define Q931_REDIRECTING_NUMBER 0x74
#define Q931_REDIRECTING_SUBADDR 0x75
#define Q931_TRANSIT_NET_SELECT 0x78
#define Q931_RESTART_INDICATOR 0x79
#define Q931_LOW_LAYER_COMPAT 0x7c
#define Q931_HIGH_LAYER_COMPAT 0x7d
#define Q931_CODESET(x) ((x) << 8)
#define Q931_IE_CODESET(x) ((x) >> 8)
#define Q931_IE_IE(x) ((x) & 0xff)
#define Q931_FULL_IE(codeset, ie) (((codeset) << 8) | ((ie) & 0xff))
#define Q931_DISPLAY 0x28
#define Q931_IE_SEGMENTED_MSG 0x00
#define Q931_IE_CHANGE_STATUS 0x01
#define Q931_IE_ORIGINATING_LINE_INFO (0x01 | Q931_CODESET(6))
#define Q931_IE_CONNECTED_ADDR 0x0C
#define Q931_IE_CONNECTED_NUM 0x4C
#define Q931_IE_CALL_IDENTITY 0x10
#define Q931_IE_FACILITY 0x1c
#define Q931_IE_ENDPOINT_ID 0x26
#define Q931_IE_NOTIFY_IND 0x27
#define Q931_IE_TIME_DATE 0x29
#define Q931_IE_KEYPAD_FACILITY 0x2c
#define Q931_IE_CALL_STATUS 0x2d
#define Q931_IE_UPDATE 0x31
#define Q931_IE_INFO_REQUEST 0x32
#define Q931_IE_SIGNAL 0x34
#define Q931_IE_SWITCHHOOK 0x36
#define Q931_IE_GENERIC_DIGITS (0x37 | Q931_CODESET(6))
#define Q931_IE_FEATURE_ACTIVATE 0x38
#define Q931_IE_FEATURE_IND 0x39
#define Q931_IE_ORIGINAL_CALLED_NUMBER 0x73
#define Q931_IE_REDIRECTION_NUMBER 0x76
#define Q931_IE_REDIRECTION_SUBADDR 0x77
#define Q931_IE_USER_USER_FACILITY 0x7A
#define Q931_IE_USER_USER 0x7E
#define Q931_IE_ESCAPE_FOR_EXT 0x7F
/*! Q.931 call states */
enum Q931_CALL_STATE {
/*!
* \details
* null state (U0):
* No call exists.
* \details
* null state (N0):
* No call exists.
*/
Q931_CALL_STATE_NULL = 0,
/*!
* \details
* call initiated (U1):
* This state exists for an outgoing call, when the user requests
* call establishment from the network.
* \details
* call initiated (N1):
* This state exists for an outgoing call when the network has received
* a call establishment request but has not yet responded.
*/
Q931_CALL_STATE_CALL_INITIATED = 1,
/*!
* \details
* overlap sending (U2):
* This state exists for an outgoing call when the user has
* received acknowledgement of the call establishment request which
* permits the user to send additional call information to the network
* in overlap mode.
* \details
* overlap sending (N2):
* This state exists for an outgoing call when the network has acknowledged
* the call establishment request and is prepared to receive additional
* call information (if any) in overlap mode.
*/
Q931_CALL_STATE_OVERLAP_SENDING = 2,
/*!
* \details
* outgoing call proceeding (U3):
* This state exists for an outgoing call when the user has
* received acknowledgement that the network has received all
* call information necessary to effect call establishment.
* \details
* outgoing call proceeding (N3):
* This state exists for an outgoing call when the network has sent
* acknowledgement that the network has received all call information
* necessary to effect call establishment.
*/
Q931_CALL_STATE_OUTGOING_CALL_PROCEEDING = 3,
/*!
* \details
* call delivered (U4):
* This state exists for an outgoing call when the calling user has
* received an indication that remote user alerting has been initiated.
* \details
* call delivered (N4):
* This state exists for an outgoing call when the network has indicated
* that remote user alerting has been initiated.
*/
Q931_CALL_STATE_CALL_DELIVERED = 4,
/*!
* \details
* call present (U6):
* This state exists for an incoming call when the user has received a
* call establishment request but has not yet responded.
* \details
* call present (N6):
* This state exists for an incoming call when the network has sent a
* call establishment request but has not yet received a satisfactory
* response.
*/
Q931_CALL_STATE_CALL_PRESENT = 6,
/*!
* \details
* call received (U7):
* This state exists for an incoming call when the user has indicated
* alerting but has not yet answered.
* \details
* call received (N7):
* This state exists for an incoming call when the network has received
* an indication that the user is alerting but has not yet received an
* answer.
*/
Q931_CALL_STATE_CALL_RECEIVED = 7,
/*!
* \details
* connect request (U8):
* This state exists for an incoming call when the user has answered
* the call and is waiting to be awarded the call.
* \details
* connect request (N8):
* This state exists for an incoming call when the network has received
* an answer but the network has not yet awarded the call.
*/
Q931_CALL_STATE_CONNECT_REQUEST = 8,
/*!
* \details
* incoming call proceeding (U9):
* This state exists for an incoming call when the user has sent
* acknowledgement that the user has received all call information
* necessary to effect call establishment.
* \details
* incoming call proceeding (N9):
* This state exists for an incoming call when the network has received
* acknowledgement that the user has received all call information
* necessary to effect call establishment.
*/
Q931_CALL_STATE_INCOMING_CALL_PROCEEDING = 9,
/*!
* \details
* active (U10):
* This state exists for an incoming call when the user has received
* an acknowledgement from the network that the user has been awarded
* the call. This state exists for an outgoing call when the user has
* received an indication that the remote user has answered the call.
* \details
* active (N10):
* This state exists for an incoming call when the network has awarded
* the call to the called user. This state exists for an outgoing call
* when the network has indicated that the remote user has answered
* the call.
*/
Q931_CALL_STATE_ACTIVE = 10,
/*!
* \details
* disconnect request (U11):
* This state exists when the user has requested the network to clear
* the end-to-end connection (if any) and is waiting for a response.
* \details
* disconnect request (N11):
* This state exists when the network has received a request from the
* user to clear the end-to-end connection (if any).
*/
Q931_CALL_STATE_DISCONNECT_REQUEST = 11,
/*!
* \details
* disconnect indication (U12):
* This state exists when the user has received an invitation to
* disconnect because the network has disconnected the end-to-end
* connection (if any).
* \details
* disconnect indication (N12):
* This state exists when the network has disconnected the end-to-end
* connection (if any) and has sent an invitation to disconnect the
* user-network connection.
*/
Q931_CALL_STATE_DISCONNECT_INDICATION = 12,
/*!
* \details
* suspend request (U15):
* This state exists when the user has requested the network to suspend
* the call and is waiting for a response.
* \details
* suspend request (N15):
* This state exists when the network has received a request to suspend
* the call but has not yet responded.
*/
Q931_CALL_STATE_SUSPEND_REQUEST = 15,
/*!
* \details
* resume request (U17):
* This state exists when the user has requested the network to resume
* a previously suspended call and is waiting for a response.
* \details
* resume request (N17):
* This state exists when the network has received a request to resume
* a previously suspended call but has not yet responded.
*/
Q931_CALL_STATE_RESUME_REQUEST = 17,
/*!
* \details
* release request (U19):
* This state exists when the user has requested the network to release
* and is waiting for a response.
* \details
* release request (N19):
* This state exists when the network has requested the user to release
* and is waiting for a response.
*/
Q931_CALL_STATE_RELEASE_REQUEST = 19,
/*!
* \details
* call abort (N22):
* This state exists for an incoming call for the point-to-multipoint
* configuration when the call is being cleared before any user has been
* awarded the call.
*/
Q931_CALL_STATE_CALL_ABORT = 22,
/*!
* \details
* overlap receiving (U25):
* This state exists for an incoming call when the user has acknowledged
* the call establishment request from the network and is prepared to
* receive additional call information (if any) in overlap mode.
* \details
* overlap receiving (N25):
* This state exists for an incoming call when the network has received
* acknowledgement of the call establishment request which permits the
* network to send additional call information (if any) in the overlap
* mode.
*/
Q931_CALL_STATE_OVERLAP_RECEIVING = 25,
/*!
* \details
* call independent service (U31): (From Q.932)
* This state exists when a call independent supplementary service
* signalling connection is established.
* \details
* call independent service (N31): (From Q.932)
* This state exists when a call independent supplementary service
* signalling connection is established.
*/
Q931_CALL_STATE_CALL_INDEPENDENT_SERVICE = 31,
Q931_CALL_STATE_RESTART_REQUEST = 61,
Q931_CALL_STATE_RESTART = 62,
};
/* EuroISDN */
#define Q931_SENDING_COMPLETE 0xa1
extern int maintenance_service(struct pri *pri, int span, int channel, int changestatus);
extern int maintenance_service_ack(struct pri *pri, q931_call *call);
/* Q.SIG specific */
#define QSIG_IE_TRANSIT_COUNT 0x31
extern int q931_receive(struct pri *pri, q931_h *h, int len);
extern int q931_alerting(struct pri *pri, q931_call *call, int channel, int info);
extern int q931_call_progress_with_cause(struct pri *pri, q931_call *call, int channel, int info, int cause);
extern int q931_call_progress(struct pri *pri, q931_call *call, int channel, int info);
extern int q931_notify(struct pri *pri, q931_call *call, int channel, int info);
extern int q931_call_proceeding(struct pri *pri, q931_call *call, int channel, int info);
extern int q931_setup_ack(struct pri *pri, q931_call *call, int channel, int nonisdn);
extern int q931_information(struct pri *pri, q931_call *call, char digit);
extern int q931_keypad_facility(struct pri *pri, q931_call *call, const char *digits);
extern int q931_connect(struct pri *pri, q931_call *call, int channel, int nonisdn);
extern int q931_release(struct pri *pri, q931_call *call, int cause);
extern int q931_disconnect(struct pri *pri, q931_call *call, int cause);
extern int q931_hangup(struct pri *pri, q931_call *call, int cause);
extern int q931_restart(struct pri *pri, int channel);
extern int q931_facility(struct pri *pri, q931_call *call);
extern int q931_call_getcrv(struct pri *pri, q931_call *call, int *callmode);
extern int q931_call_setcrv(struct pri *pri, q931_call *call, int crv, int callmode);
extern q931_call *q931_new_call(struct pri *pri);
extern int q931_setup(struct pri *pri, q931_call *c, struct pri_sr *req);
extern void q931_dump(struct pri *pri, q931_h *h, int len, int txrx);
extern void __q931_destroycall(struct pri *pri, q931_call *c);
extern void q931_dl_indication(struct pri *pri, int event);
#endif
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