freeswitch/libs/iax/src/iax.h

87 lines
2.8 KiB
C

/*
* libIAX
*
* Implementation of Inter-IAXerisk eXchange
*
* Copyright (C) 1999, Mark Spencer
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU Lesser (Library) General Public License
*/
#ifndef _IAX_H
#define _IAX_H
/* Max version of IAX protocol we support */
#define IAX_PROTO_VERSION 1
#define IAX_MAX_CALLS 32768
#define IAX_FLAG_FULL 0x8000
#define IAX_FLAG_SC_LOG 0x80
#define IAX_MAX_SHIFT 0x1F
/* Maximum size of an IAX frame (max size of UDP frame) */
#define IAX_MAX_BUF_SIZE 65536
/* Subclass for IAX_FRAME_IAX */
#define IAX_COMMAND_NEW 1
#define IAX_COMMAND_PING 2
#define IAX_COMMAND_PONG 3
#define IAX_COMMAND_ACK 4
#define IAX_COMMAND_HANGUP 5
#define IAX_COMMAND_REJECT 6
#define IAX_COMMAND_ACCEPT 7
#define IAX_COMMAND_AUTHREQ 8
#define IAX_COMMAND_AUTHREP 9
#define IAX_COMMAND_INVAL 10
#define IAX_COMMAND_LAGRQ 11
#define IAX_COMMAND_LAGRP 12
#define IAX_COMMAND_REGREQ 13 /* Registration request */
#define IAX_COMMAND_REGAUTH 14 /* Registration authentication required */
#define IAX_COMMAND_REGACK 15 /* Registration accepted */
#define IAX_COMMAND_REGREJ 16 /* Registration rejected */
#define IAX_COMMAND_REGREL 17 /* Force release of registration */
#define IAX_COMMAND_VNAK 18 /* If we receive voice before valid first voice frame, send this */
#define IAX_COMMAND_DPREQ 19 /* Request status of a dialplan entry */
#define IAX_COMMAND_DPREP 20 /* Request status of a dialplan entry */
#define IAX_COMMAND_DIAL 21 /* Request a dial on channel brought up TBD */
#define IAX_COMMAND_TXREQ 22 /* Transfer Request */
#define IAX_COMMAND_TXCNT 23 /* Transfer Connect */
#define IAX_COMMAND_TXACC 24 /* Transfer Accepted */
#define IAX_COMMAND_TXREADY 25 /* Transfer ready */
#define IAX_COMMAND_TXREL 26 /* Transfer release */
#define IAX_COMMAND_TXREJ 27 /* Transfer reject */
#define IAX_COMMAND_QUELCH 28 /* Stop audio/video transmission */
#define IAX_COMMAND_UNQUELCH 29 /* Resume audio/video transmission */
#define IAX_DEFAULT_REG_EXPIRE 60
#define IAX_DEFAULT_PORTNO 5036
/* Full frames are always delivered reliably */
struct iax_full_hdr {
short callno; /* Source call number -- high bit must be 1 */
short dcallno; /* Destination call number */
unsigned int ts; /* 32-bit timestamp in milliseconds */
unsigned short seqno; /* Packet number */
char type; /* Frame type */
unsigned char csub; /* Compressed subclass */
char data[];
};
/* Mini header is used only for voice frames -- delivered unreliably */
struct iax_mini_hdr {
short callno; /* Source call number -- high bit must be 0 */
unsigned short ts; /* 16-bit Timestamp (high 16 bits from last IAX_full_hdr) */
/* Frametype implicitly VOICE_FRAME */
/* subclass implicit from last IAX_full_hdr */
char data[];
};
#endif