spandsp
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00001 /* 00002 * SpanDSP - a series of DSP components for telephony 00003 * 00004 * t30_dis_dtc_dcs_bits.h - ITU T.30 fax control bits definitions 00005 * 00006 * Written by Steve Underwood <steveu@coppice.org> 00007 * 00008 * Copyright (C) 2009 Steve Underwood 00009 * 00010 * All rights reserved. 00011 * 00012 * This program is free software; you can redistribute it and/or modify 00013 * it under the terms of the GNU Lesser General Public License version 2.1, 00014 * as published by the Free Software Foundation. 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Lesser General Public License for more details. 00020 * 00021 * You should have received a copy of the GNU Lesser General Public 00022 * License along with this program; if not, write to the Free Software 00023 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00024 */ 00025 00026 /*! \file */ 00027 00028 #if !defined(_SPANDSP_PRIVATE_T30_DIS_DTC_DCS_BITS_H_) 00029 #define _SPANDSP_PRIVATE_T30_DIS_DTC_DCS_BITS_H_ 00030 00031 /* Indicates that the terminal has the Simple mode capability defined in ITU-T Rec. T.37. 00032 Internet address signals CIA, TSA or CSA can be sent and received. The recipient terminal 00033 may process or ignore this signal. */ 00034 #define T30_DIS_BIT_T37 1 00035 #define T30_DCS_BIT_T37 1 00036 00037 /* Indicates that the terminal has the capability to communicate using ITU-T Rec. T.38. 00038 Internet address signals CIA, TSA or CSA can be sent and received. The recipient terminal 00039 may process or ignore this signal. */ 00040 #define T30_DIS_BIT_T38 3 00041 #define T30_DCS_BIT_T38 3 00042 00043 /* Bit 4 set to "1" indicates 3rd Generation Mobile Network Access to the GSTN Connection. 00044 Bit 4 set to "0" conveys no information about the type of connection. */ 00045 #define T30_DIS_BIT_3G_MOBILE 4 00046 #define T30_DCS_BIT_3G_MOBILE 4 00047 00048 /* When ISDN mode is used, in DIS/DTC bit 6 shall be set to "0". */ 00049 #define T30_DIS_BIT_V8_CAPABILITY 6 00050 00051 /* When ISDN mode is used, in DIS/DTC bit 7 shall be set to "0". */ 00052 #define T30_DIS_BIT_64_OCTET_ECM_FRAMES_PREFERRED 7 00053 00054 /* Bit 9 indicates that there is a facsimile document ready to be polled from the answering 00055 terrminal. It is not an indication of a capability. */ 00056 #define T30_DIS_BIT_READY_TO_TRANSMIT_FAX_DOCUMENT 9 00057 00058 /* In DIS/DTC bit 10 indicates that the answering terminal has receiving capabilities. 00059 In DCS it is a command to the receiving terminal to set itself in the receive mode. */ 00060 #define T30_DIS_BIT_READY_TO_RECEIVE_FAX_DOCUMENT 10 00061 #define T30_DCS_BIT_RECEIVE_FAX_DOCUMENT 10 00062 00063 /* Bits 11, 12, 13, 14 - modem type */ 00064 00065 #define T30_DIS_BIT_200_200_CAPABLE 15 00066 #define T30_DCS_BIT_200_200 15 00067 00068 #define T30_DIS_BIT_2D_CAPABLE 16 00069 #define T30_DCS_BIT_2D_CODING 16 00070 00071 /* Standard facsimile terminals conforming to ITU-T Rec. T.4 must have the following capability: 00072 Paper length = 297 mm. */ 00073 00074 /* Bits 17, 18 - recording width */ 00075 00076 /* Bits 19, 20 - paper length */ 00077 00078 /* Bits 21, 22, 23 - min scan line time */ 00079 00080 /* When ISDN mode is used, in DIS/DTC bits 21 to 23 shall be set to "1". */ 00081 00082 #define T30_DIS_BIT_UNCOMPRESSED_CAPABLE 26 00083 #define T30_DCS_BIT_UNCOMPRESSED_MODE 26 00084 00085 /* When ISDN mode is used, in DIS/DTC bit 27 shall be set to "1". */ 00086 #define T30_DIS_BIT_ECM_CAPABLE 27 00087 #define T30_DCS_BIT_ECM 27 00088 00089 /* The value of bit 28 in the DCS command is only valid when ECM is selected. */ 00090 #define T30_DCS_BIT_64_OCTET_ECM_FRAMES 28 00091 00092 /* The value of bit 31 in the DCS command is only valid when ECM is selected. */ 00093 #define T30_DIS_BIT_T6_CAPABLE 31 00094 #define T30_DCS_BIT_T6_MODE 31 00095 00096 #define T30_DIS_BIT_FNV_CAPABLE 33 00097 #define T30_DCS_BIT_FNV_CAPABLE 33 00098 00099 #define T30_DIS_BIT_MULTIPLE_SELECTIVE_POLLING_CAPABLE 34 00100 00101 #define T30_DIS_BIT_POLLED_SUBADDRESSING_CAPABLE 35 00102 00103 #define T30_DIS_BIT_T43_CAPABLE 36 00104 #define T30_DCS_BIT_T43_CODING 36 00105 00106 #define T30_DIS_BIT_PLANE_INTERLEAVE_CAPABLE 37 00107 #define T30_DCS_BIT_PLANE_INTERLEAVE 37 00108 00109 #define T30_DIS_BIT_G726_CAPABLE 38 00110 #define T30_DCS_BIT_G726 38 00111 00112 #define T30_DIS_BIT_200_400_CAPABLE 41 00113 #define T30_DCS_BIT_200_400 41 00114 00115 #define T30_DIS_BIT_300_300_CAPABLE 42 00116 #define T30_DCS_BIT_300_300 42 00117 00118 #define T30_DIS_BIT_400_400_CAPABLE 43 00119 #define T30_DCS_BIT_400_400 43 00120 00121 /* Bits 44 and 45 are used only in conjunction with bits 15 and 43. Bit 44 in DCS, when used, 00122 shall correctly indicate the resolution of the transmitted document, which means that bit 44 in DCS may 00123 not always match the indication of bits 44 and 45 in DIS/DTC. Cross selection will cause the distortion 00124 and reduction of reproducible area. 00125 If a receiver indicates in DIS that it prefers to receive metric-based information, but the transmitter has 00126 only the equivalent inch-based information (or vice versa), then communication shall still take place. 00127 Bits 44 and 45 do not require the provision of any additional features on the terminal to 00128 indicate to the sending or receiving user whether the information was transmitted or received on a metric-metric, 00129 inch-inch, metric-inch, inch-metric basis. */ 00130 00131 #define T30_DIS_BIT_INCH_RESOLUTION_PREFERRED 44 00132 #define T30_DCS_BIT_INCH_RESOLUTION 44 00133 00134 #define T30_DIS_BIT_METRIC_RESOLUTION_PREFERRED 45 00135 00136 #define T30_DIS_BIT_MIN_SCAN_TIME_HALVES 46 00137 00138 #define T30_DIS_BIT_SELECTIVE_POLLING_CAPABLE 47 00139 00140 #define T30_DIS_BIT_SUBADDRESSING_CAPABLE 49 00141 #define T30_DCS_BIT_SUBADDRESS_TRANSMISSION 49 00142 00143 #define T30_DIS_BIT_PASSWORD 50 00144 #define T30_DCS_BIT_SENDER_ID_TRANSMISSION 50 00145 00146 /* Bit 51 indicates that there is a data file ready to be polled from the answering terminal. It is 00147 not an indication of a capability. This bit is used in conjunction with bits 53, 54, 55 and 57. */ 00148 #define T30_DIS_BIT_READY_TO_TRANSMIT_DATA_FILE 51 00149 00150 /* The binary file transfer protocol is described in ITU-T Rec. T.434. */ 00151 #define T30_DIS_BIT_BFT_CAPABLE 53 00152 #define T30_DCS_BIT_BFT 53 00153 00154 #define T30_DIS_BIT_DTM_CAPABLE 54 00155 #define T30_DCS_BIT_DTM 54 00156 00157 #define T30_DIS_BIT_EDI_CAPABLE 55 00158 #define T30_DCS_BIT_EDI 55 00159 00160 #define T30_DIS_BIT_BTM_CAPABLE 57 00161 #define T30_DCS_BIT_BTM 57 00162 00163 /* Bit 59 indicates that there is a character-coded or mixed-mode document ready to be polled 00164 from the answering terminal. It is not an indication of a capability. This bit is used in 00165 conjunction with bits 60, 62 and 65. */ 00166 #define T30_DIS_BIT_READY_TO_TRANSMIT_MIXED_MODE_DOCUMENT 59 00167 00168 #define T30_DIS_BIT_CHARACTER_MODE 60 00169 #define T30_DCS_BIT_CHARACTER_MODE 60 00170 00171 #define T30_DIS_BIT_MIXED_MODE 62 00172 #define T30_DCS_BIT_MIXED_MODE 62 00173 00174 #define T30_DIS_BIT_PROCESSABLE_MODE_26 65 00175 00176 #define T30_DIS_BIT_DIGITAL_NETWORK_CAPABLE 66 00177 #define T30_DCS_BIT_DIGITAL_NETWORK_CAPABLE 66 00178 00179 #define T30_DIS_BIT_DUPLEX_CAPABLE 67 00180 #define T30_DCS_BIT_DUPLEX_CAPABLE 67 00181 00182 #define T30_DIS_BIT_T81_CAPABLE 68 00183 #define T30_DCS_BIT_FULL_COLOUR_MODEX 68 00184 00185 #define T30_DIS_BIT_FULL_COLOUR_CAPABLE 69 00186 #define T30_DCS_BIT_FULL_COLOUR_MODE 69 00187 00188 /* In a DIS/DTC frame, setting bit 71 to "0" indicates that the called terminal can only accept 00189 image data which has been digitized to 8 bits/pel/component for JPEG mode. This is also true for T.43 00190 mode if bit 36 is also set to "1". Setting bit 71 to "1" indicates that the called terminal can also accept 00191 image data that are digitized to 12 bits/pel/component for JPEG mode. This is also true for T.43 mode if 00192 bit 36 is also set to "1". In a DCS frame, setting bit 71 to "0" indicates that the calling terminal's image 00193 data are digitized to 8 bits/pel/component for JPEG mode. This is also true for T.43 mode if bit 36 is also 00194 set to "1". Setting bit 71 to "1" indicates that the calling terminal transmits image data which has been 00195 digitized to 12 bits/pel/component for JPEG mode. This is also true for T.43 mode if bit 36 is also set 00196 to "1". */ 00197 #define T30_DIS_BIT_12BIT_CAPABLE 71 00198 #define T30_DCS_BIT_12BIT_COMPONENT 71 00199 00200 #define T30_DIS_BIT_NO_SUBSAMPLING 73 00201 #define T30_DCS_BIT_NO_SUBSAMPLING 73 00202 00203 #define T30_DIS_BIT_CUSTOM_ILLUMINANT 74 00204 #define T30_DCS_BIT_CUSTOM_ILLUMINANT 74 00205 00206 #define T30_DIS_BIT_CUSTOM_GAMUT_RANGE 75 00207 #define T30_DCS_BIT_CUSTOM_GAMUT_RANGE 75 00208 00209 #define T30_DIS_BIT_NORTH_AMERICAN_LETTER_CAPABLE 76 00210 #define T30_DCS_BIT_NORTH_AMERICAN_LETTER 76 00211 00212 #define T30_DIS_BIT_NORTH_AMERICAN_LEGAL_CAPABLE 77 00213 #define T30_DCS_BIT_NORTH_AMERICAN_LEGAL 77 00214 00215 #define T30_DIS_BIT_T85_CAPABLE 78 00216 #define T30_DCS_BIT_T85_MODE 78 00217 00218 #define T30_DIS_BIT_T85_L0_CAPABLE 79 00219 #define T30_DCS_BIT_T85_L0_MODE 79 00220 00221 /* In a DIS/DTC frame, setting bit 97 to "0" indicates that the called terminal does not have the 00222 capability to accept 300 pels/25.4 mm x 300 lines/25.4 mm or 400 pels/25.4 mm x 400 lines/25.4 mm 00223 resolutions for colour/gray-scale images or T.44 Mixed Raster Content (MRC) mask layer. 00224 00225 Setting bit 97 to "1" indicates that the called terminal does have the capability to accept 00226 300 pels/25.4 mm x 300 lines/25.4 mm or 400 pels/25.4 mm x 400 lines/25.4 mm resolutions for 00227 colour/gray-scale images and MRC mask layer. Bit 97 is valid only when bits 68 and 42 or 43 00228 (300 pels/25.4 mm x 300 lines/25.4 mm or 400 pels/25.4 mm x 400 lines/25.4 mm) are set to "1". 00229 00230 In a DCS frame, setting bit 97 to "0" indicates that the calling terminal does not use 00231 300 pels/25.4 mm x 300 lines/25.4 mm or 400 pels/25.4 mm x 400 lines/25.4 mm resolutions 00232 for colour/gray-scale images and mask layer. 00233 00234 Setting bit 97 to "1" indicates that the calling terminal uses 300 pels/25.4 mm x 300 lines/25.4 mm 00235 or 400 pels/25.4 mm x 400 lines/25.4 mm resolutions for colour/gray-scale images and MRC mask layer. 00236 Bit 97 is valid only when bits 68 and 42 or 43 (300 pels/25.4 mm x 300 lines/25.4 mm and 00237 400 pels/25.4 mm x 400 lines/25.4 mm) are set to "1". 00238 00239 In a DIS/DTC frame, combinations of bit 42, bit 43 and bit 97 indicate that the called terminal 00240 has higher resolution capabilities as follows: 00241 00242 Resolution capabilities (pels/25.4 mm) 00243 DIS/DTC Monochrome Colour/gray-scale 00244 42 43 97 300 x 300 400 x 400 300 x 300 400 x 400 00245 0 0 0 no no no no 00246 1 0 0 yes no no no 00247 0 1 0 no yes no no 00248 1 1 0 yes yes no no 00249 0 0 1 (invalid) 00250 1 0 1 yes no yes no 00251 0 1 1 no yes no yes 00252 1 1 1 yes yes yes yes 00253 "yes" means that the called terminal has the corresponding capability. 00254 "no" means that the called terminal does not have the corresponding capability. */ 00255 #define T30_DIS_BIT_COLOUR_GREY_300_300_400_400_CAPABLE 97 00256 #define T30_DCS_BIT_COLOUR_GREY_300_300_400_400 97 00257 00258 /* In a DIS/DTC frame, setting bit 98 to "0" indicates that the called terminal does not have the 00259 capability to accept 100 pels/25.4 mm x 100 lines/25.4 mm spatial resolution for colour or gray-scale 00260 images. Setting bit 98 to "1" indicates that the called terminal does have the capability to accept 00261 100 pels/25.4 mm x 100 lines/25.4 mm spatial resolution for colour or gray-scale images. Bit 98 is valid 00262 only when bit 68 is set to "1". In a DCS frame, setting bit 98 to "0" indicates that the calling terminal does 00263 not use 100 pels/25.4 mm x 100 lines/25.4 mm spatial resolution for colour or gray-scale images. Setting 00264 bit 98 to "1" indicates that the calling terminal uses 100 pels/25.4 mm x 100 lines/25.4 mm spatial 00265 resolution for colour or gray-scale images. */ 00266 #define T30_DIS_BIT_COLOUR_GREY_100_100_CAPABLE 98 00267 #define T30_DCS_BIT_COLOUR_GREY_100_100 98 00268 00269 /* To provide an error recovery mechanism, when PWD/SEP/SUB/SID/PSA/IRA/ISP frames are sent with DCS or DTC, 00270 bits 49, 102 and 50 in DCS or bits 47, 101, 50 and 35 in DTC shall be set to "1" with the following 00271 meaning: 00272 Bit DIS DTC DCS 00273 35 Polled SubAddress capability Polled SubAddress transmission Not allowed – set to "0" 00274 47 Selective polling capability Selective polling transmission Not allowed – set to "0" 00275 49 Subaddressing capability Not allowed (Set to "0") Subaddressing transmission 00276 50 Password Password transmission Sender Identification transmission 00277 101 Internet Selective Polling Address capability Internet Selective Polling Address transmission Not allowed – set to "0" 00278 102 Internet Routing Address capability Not allowed (Set to "0") Internet Routing Address transmission 00279 00280 Terminals conforming to the 1993 version of T.30 may set the above bits to "0" even though PWD/SEP/SUB 00281 frames are transmitted. */ 00282 #define T30_DIS_BIT_INTERNET_SELECTIVE_POLLING_ADDRESS 101 00283 00284 #define T30_DIS_BIT_INTERNET_ROUTING_ADDRESS 102 00285 #define T30_DCS_BIT_INTERNET_ROUTING_ADDRESS_TRANSMISSION 102 00286 00287 #define T30_DIS_BIT_600_600_CAPABLE 105 00288 #define T30_DCS_BIT_600_600 105 00289 00290 #define T30_DIS_BIT_1200_1200_CAPABLE 106 00291 #define T30_DCS_BIT_1200_1200 106 00292 00293 #define T30_DIS_BIT_300_600_CAPABLE 107 00294 #define T30_DCS_BIT_300_600 107 00295 00296 #define T30_DIS_BIT_400_800_CAPABLE 108 00297 #define T30_DCS_BIT_400_800 108 00298 00299 #define T30_DIS_BIT_600_1200_CAPABLE 109 00300 #define T30_DCS_BIT_600_1200 109 00301 00302 #define T30_DIS_BIT_COLOUR_GREY_600_600_CAPABLE 110 00303 #define T30_DCS_BIT_COLOUR_GREY_600_600 110 00304 00305 #define T30_DIS_BIT_COLOUR_GREY_1200_1200_CAPABLE 111 00306 #define T30_DCS_BIT_COLOUR_GREY_1200_1200 111 00307 00308 #define T30_DIS_BIT_ALTERNATE_DOUBLE_SIDED_CAPABLE 113 00309 #define T30_DCS_BIT_ALTERNATE_DOUBLE_SIDED_CAPABLE 113 00310 00311 #define T30_DIS_BIT_CONTINUOUS_DOUBLE_SIDED_CAPABLE 114 00312 #define T30_DCS_BIT_CONTINUOUS_DOUBLE_SIDED_CAPABLE 114 00313 00314 #define T30_DIS_BIT_BLACK_AND_WHITE_MRC 115 00315 00316 #define T30_DIS_BIT_T45_CAPABLE 116 00317 #define T30_DCS_BIT_T45_MODE 116 00318 00319 /* This bit defines the available colour space, when bit 92, 93 or 94 is set to "1". 00320 Available colour space for all combinations of bits 92, 93, 94 and 119 are shown in the following table. 00321 It should be noted that terminals which conform to the 2003 and earlier versions of this Recommendation 00322 will send LAB with "1" in bit 92, 93 or 94 even if bit 119 is set to "1". 00323 00324 Available colour space for DIS/DTC bits 92, 93, 94 and 119 00325 00326 92 93 94 119 Mode of T.44 Available colour space 00327 0 0 0 x Not available - 00328 1 0 0 0 Mode 1 LAB only 00329 1 0 0 1 Mode 1 YCC only 00330 x 1 x 0 Mode 2 or higher LAB only 00331 x x 1 0 Mode 2 or higher LAB only 00332 x 1 x 1 Mode 2 or higher LAB and YCC 00333 x x 1 1 Mode 2 or higher LAB and YCC 00334 00335 Colour space for DCS bits 92, 93, 94 and 119 00336 00337 92 93 94 119 Mode of T.44 Colour space 00338 0 0 0 x* Not available - 00339 1 0 0 0 Mode 1 LAB 00340 1 0 0 1 Mode 1 YCC 00341 x 1 x 0 Mode 2 or higher LAB 00342 x x 1 0 Mode 2 or higher LAB 00343 x 1 x 1 Mode 2 or higher YCC or mixing of YCC and LAB 00344 x x 1 1 Mode 2 or higher YCC or mixing of YCC and LAB */ 00345 #define T30_DIS_BIT_T44_COLOUR_SPACE 119 00346 #define T30_DCS_BIT_T44_COLOUR_SPACE 119 00347 00348 /* Can only be set in the communication through the T.38 gateway, to cope with delay of network. 00349 T.x timer (12+-1s) should be used after emitting RNR or TNR. However, after receiving 00350 PPS signal in ECM mode, T.5 timer should be used. */ 00351 #define T30_DIS_BIT_T38_FLOW_CONTROL_CAPABLE 121 00352 #define T30_DCS_BIT_T38_FLOW_CONTROL_CAPABLE 121 00353 00354 /* For resolutions greater than 200 lines/25.4 mm, 4.2.1.1/T.4 specifies the use of specific K 00355 factors for each standardized vertical resolution. To ensure backward compatibility with earlier 00356 versions of ITU-T Rec. T.4, bit 122 indicates when such K factors are being used. */ 00357 #define T30_DIS_BIT_K_GREATER_THAN_4 122 00358 00359 /* This bit should be set to "1" if the fax device is an Internet-Aware Fax Device as defined in 00360 ITU-T Rec. T.38 and if it is not affected by the data signal rate indicated by the DIS and DTC 00361 signals when communicating with another Internet-Aware Fax Device operating in T.38 mode. This 00362 bit shall not be used in GSTN mode. */ 00363 #define T30_DIS_BIT_T38_FAX_CAPABLE 123 00364 /* This bit should be set to "1" if the fax device elects to operate in an Internet-Aware Fax mode 00365 as defined in ITU-T Rec. T.38 in response to a device which has set the related DIS bit to "1". 00366 When this bit is set to "1", the data signal rate of the modem (bits 11-14) should be set to "0". */ 00367 #define T30_DCS_BIT_T38_FAX_MODE 123 00368 00369 /* When either bit of 31, 36, 38, 51, 53, 54, 55, 57, 59, 60, 62, 65, 68, 78, 79, 115, 116 and 127 is 00370 set to "1", ECM must be used. If the value of bit field 92 to 94 is non-zero, then ECM must be used. 00371 00372 Annex K describes the optional continuous-tone colour and gray scale images mode 00373 (sYCC-JPEG mode) protocol. When bit 127 in DIS/DTC frame is set to "1", the called terminal has the 00374 capability to accept sYCC-JPEG mode. This is defined with complete independent in the colour space 00375 CIELAB. In addition, when bit 127 in DCS frame is set to "1", ECM must be used and bits 15, 17, 18, 00376 19, 20, 41, 42, 43, 45, 46, 68, 69, 71, 73, 74, 75, 76, 77, 97, 98, 105, 106, 107, 108, 00377 109, 110 and 111 in DCS frame are "Don't care", and should be set to "0". In the case of 00378 transmission of multiple images, a post message signal PPS-MPS between pages, PPS-NULL between 00379 partial pages and PPS-EOP following the last page should be sent from the calling terminal to the 00380 called terminal. */ 00381 #define T30_DIS_BIT_SYCC_T81_CAPABLE 127 00382 #define T30_DCS_BIT_SYCC_T81_MODE 127 00383 00384 #endif 00385 /*- End of file ------------------------------------------------------------*/