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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Implementation of Inter-Asterisk eXchange
*
* Copyright (C) 2003, Digium
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
/* Max version of IAX protocol we support */
#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_COMMAND_POKE 30 /* Like ping, but does not require an open connection */
#define IAX_COMMAND_PAGE 31 /* Paging description */
#define IAX_COMMAND_MWI 32 /* Stand-alone message waiting indicator */
#define IAX_COMMAND_UNSUPPORT 33 /* Unsupported message received */
#define IAX_COMMAND_TRANSFER 34 /* Request remote transfer */
#define IAX_COMMAND_PROVISION 35 /* Provision device */
#define IAX_COMMAND_FWDOWNL 36 /* Download firmware */
#define IAX_COMMAND_FWDATA 37 /* Firmware Data */
#define IAX_DEFAULT_REG_EXPIRE 60 /* By default require re-registration once per minute */
#define IAX_LINGER_TIMEOUT 10 /* How long to wait before closing bridged call */
/* IAX Information elements */
#define IAX_IE_CALLED_NUMBER 1 /* Number/extension being called - string */
#define IAX_IE_CALLING_NUMBER 2 /* Calling number - string */
#define IAX_IE_CALLING_ANI 3 /* Calling number ANI for billing - string */
#define IAX_IE_CALLING_NAME 4 /* Name of caller - string */
#define IAX_IE_CALLED_CONTEXT 5 /* Context for number - string */
#define IAX_IE_USERNAME 6 /* Username (peer or user) for authentication - string */
#define IAX_IE_PASSWORD 7 /* Password for authentication - string */
#define IAX_IE_CAPABILITY 8 /* Actual codec capability - unsigned int */
#define IAX_IE_FORMAT 9 /* Desired codec format - unsigned int */
#define IAX_IE_LANGUAGE 10 /* Desired language - string */
#define IAX_IE_VERSION 11 /* Protocol version - short */
#define IAX_IE_ADSICPE 12 /* CPE ADSI capability - short */
#define IAX_IE_DNID 13 /* Originally dialed DNID - string */
#define IAX_IE_AUTHMETHODS 14 /* Authentication method(s) - short */
#define IAX_IE_CHALLENGE 15 /* Challenge data for MD5/RSA - string */
#define IAX_IE_MD5_RESULT 16 /* MD5 challenge result - string */
#define IAX_IE_RSA_RESULT 17 /* RSA challenge result - string */
#define IAX_IE_APPARENT_ADDR 18 /* Apparent address of peer - struct sockaddr_in */
#define IAX_IE_REFRESH 19 /* When to refresh registration - short */
#define IAX_IE_DPSTATUS 20 /* Dialplan status - short */
#define IAX_IE_CALLNO 21 /* Call number of peer - short */
#define IAX_IE_CAUSE 22 /* Cause - string */
#define IAX_IE_IAX_UNKNOWN 23 /* Unknown IAX command - byte */
#define IAX_IE_MSGCOUNT 24 /* How many messages waiting - short */
#define IAX_IE_AUTOANSWER 25 /* Request auto-answering -- none */
#define IAX_IE_MUSICONHOLD 26 /* Request musiconhold with QUELCH -- none or string */
#define IAX_IE_TRANSFERID 27 /* Transfer Request Identifier -- int */
#define IAX_IE_RDNIS 28 /* Referring DNIS -- string */
#define IAX_IE_PROVISIONING 29 /* Provisioning info */
#define IAX_IE_AESPROVISIONING 30 /* AES Provisioning info */
#define IAX_IE_DATETIME 31 /* Date/Time */
#define IAX_IE_DEVICETYPE 32 /* Device Type -- string */
#define IAX_IE_SERVICEIDENT 33 /* Service Identifier -- string */
#define IAX_IE_FIRMWAREVER 34 /* Firmware revision -- u16 */
#define IAX_IE_FWBLOCKDESC 35 /* Firmware block description -- u32 */
#define IAX_IE_FWBLOCKDATA 36 /* Firmware block of data -- raw */
#define IAX_IE_PROVVER 37 /* Provisioning Version (u32) */
#define IAX_IE_CALLINGPRES 38 /* Calling presentation (u8) */
#define IAX_IE_CALLINGTON 39 /* Calling type of number (u8) */
#define IAX_IE_CALLINGTNS 40 /* Calling transit network select (u16) */
#define IAX_IE_SAMPLINGRATE 41 /* Supported sampling rates (u16) */
#define IAX_IE_CAUSECODE 42 /* Hangup cause (u8) */
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#define IAX_IE_ENCRYPTION 43 /* Encryption format (u16) */
#define IAX_IE_ENCKEY 44 /* Encryption key (raw) */
#define IAX_IE_CODEC_PREFS 45 /* Codec Negotiation */
#define IAX_IE_RR_JITTER 46 /* Received jitter (as in RFC1889) u32 */
#define IAX_IE_RR_LOSS 47 /* Received loss (high byte loss pct, low 24 bits loss count, as in rfc1889 */
#define IAX_IE_RR_PKTS 48 /* Received frames (total frames received) u32 */
#define IAX_IE_RR_DELAY 49 /* Max playout delay for received frames (in ms) u16 */
#define IAX_IE_RR_DROPPED 50 /* Dropped frames (presumably by jitterbuf) u32 */
#define IAX_IE_RR_OOO 51 /* Frames received Out of Order u32 */
#define IAX_AUTH_PLAINTEXT (1 << 0)
#define IAX_AUTH_MD5 (1 << 1)
#define IAX_AUTH_RSA (1 << 2)
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#define IAX_ENCRYPT_AES128 (1 << 0)
#define IAX_META_TRUNK 1 /* Trunk meta-message */
#define IAX_META_VIDEO 2 /* Video frame */
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#define IAX_META_TRUNK_SUPERMINI 0 /* This trunk frame contains classic supermini frames */
#define IAX_META_TRUNK_MINI 1 /* This trunk frame contains trunked mini frames */
#define IAX_RATE_8KHZ (1 << 0) /* 8khz sampling (default if absent) */
#define IAX_RATE_11KHZ (1 << 1) /* 11.025khz sampling */
#define IAX_RATE_16KHZ (1 << 2) /* 16khz sampling */
#define IAX_RATE_22KHZ (1 << 3) /* 22.05khz sampling */
#define IAX_RATE_44KHZ (1 << 4) /* 44.1khz sampling */
#define IAX_RATE_48KHZ (1 << 5) /* 48khz sampling */
#define IAX_DPSTATUS_EXISTS (1 << 0)
#define IAX_DPSTATUS_CANEXIST (1 << 1)
#define IAX_DPSTATUS_NONEXISTENT (1 << 2)
#define IAX_DPSTATUS_IGNOREPAT (1 << 14)
#define IAX_DPSTATUS_MATCHMORE (1 << 15)
/* Full frames are always delivered reliably */
struct ast_iax2_full_hdr {
unsigned short scallno; /* Source call number -- high bit must be 1 */
unsigned short dcallno; /* Destination call number -- high bit is 1 if retransmission */
unsigned int ts; /* 32-bit timestamp in milliseconds (from 1st transmission) */
unsigned char oseqno; /* Packet number (outgoing) */
unsigned char iseqno; /* Packet number (next incoming expected) */
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unsigned char type; /* Frame type */
unsigned char csub; /* Compressed subclass */
unsigned char iedata[0];
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/* Full frames are always delivered reliably */
struct ast_iax2_full_enc_hdr {
unsigned short scallno; /* Source call number -- high bit must be 1 */
unsigned short dcallno; /* Destination call number -- high bit is 1 if retransmission */
unsigned char encdata[0];
} __attribute__ ((__packed__));
/* Mini header is used only for voice frames -- delivered unreliably */
struct ast_iax2_mini_hdr {
unsigned short callno; /* Source call number -- high bit must be 0, rest must be non-zero */
unsigned short ts; /* 16-bit Timestamp (high 16 bits from last ast_iax2_full_hdr) */
/* Frametype implicitly VOICE_FRAME */
/* subclass implicit from last ast_iax2_full_hdr */
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/* Mini header is used only for voice frames -- delivered unreliably */
struct ast_iax2_mini_enc_hdr {
unsigned short callno; /* Source call number -- high bit must be 0, rest must be non-zero */
unsigned char encdata[0];
} __attribute__ ((__packed__));
struct ast_iax2_meta_hdr {
unsigned short zeros; /* Zeros field -- must be zero */
unsigned char metacmd; /* Meta command */
unsigned char cmddata; /* Command Data */
unsigned char data[0];
} __attribute__ ((__packed__));
struct ast_iax2_video_hdr {
unsigned short zeros; /* Zeros field -- must be zero */
unsigned short callno; /* Video call number */
unsigned short ts; /* Timestamp and mark if present */
unsigned char data[0];
} __attribute__ ((__packed__));
struct ast_iax2_meta_trunk_hdr {
unsigned int ts; /* 32-bit timestamp for all messages */
unsigned char data[0];
struct ast_iax2_meta_trunk_entry {
unsigned short callno; /* Call number */
unsigned short len; /* Length of data for this callno */
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/* When trunktimestamps are used, we use this format instead */
struct ast_iax2_meta_trunk_mini {
unsigned short len;
struct ast_iax2_mini_hdr mini; /* this is an actual miniframe */
} __attribute__ ((__packed__));
#define IAX_FIRMWARE_MAGIC 0x69617879
struct ast_iax2_firmware_header {
unsigned int magic; /* Magic number */
unsigned short version; /* Software version */
unsigned char devname[16]; /* Device */
unsigned int datalen; /* Data length of file beyond header */
unsigned char chksum[16]; /* Checksum of all data */
unsigned char data[0];
} __attribute__ ((__packed__));