/* * Asterisk -- A telephony toolkit for Linux. * * Implementation of Inter-Asterisk eXchange * * Copyright (C) 2003, Digium * * Mark Spencer * * This program is free software, distributed under the terms of * the GNU General Public License */ #ifndef _IAX2_H #define _IAX2_H /* Max version of IAX protocol we support */ #define IAX_PROTO_VERSION 2 #define IAX_MAX_CALLS 32768 #define IAX_FLAG_FULL 0x8000 #define IAX_FLAG_RETRANS 0x8000 #define IAX_FLAG_SC_LOG 0x80 #define IAX_MAX_SHIFT 0x1F #define IAX_WINDOW 64 /* Subclass for AST_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_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 */ #define IAX_DEFAULT_PORTNO 4569 /* 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) */ #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) #define IAX_ENCRYPT_AES128 (1 << 0) #define IAX_META_TRUNK 1 /* Trunk meta-message */ #define IAX_META_VIDEO 2 /* Video frame */ #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) */ unsigned char type; /* Frame type */ unsigned char csub; /* Compressed subclass */ unsigned char iedata[0]; } __attribute__ ((__packed__)); /* 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 */ unsigned char data[0]; } __attribute__ ((__packed__)); /* 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]; } __attribute__ ((__packed__)); struct ast_iax2_meta_trunk_entry { unsigned short callno; /* Call number */ unsigned short len; /* Length of data for this callno */ } __attribute__ ((__packed__)); /* 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__)); #endif