&RPPDQGVIRU5&'5&'DQG5&/'5&/'0RGHPV5HIHUHQFH0DQXDO3UHOLPLQDU\
Command Reference Manualx 1199List of TablesTable 3-1. Result Codes...
Command Reference Manual3-80 1199 Table 3-15. Result Code Definitions (Cont’d)Code Message Meaning33 FAX A fax modem connection is established in a fa
Command Reference Manual1199 3-81 Table 3-15. Result Code Definitions (Cont’d)Code Message Meaning136 +MCR: V21 The modem has connected to the line wi
Command Reference Manual3-82 1199 Table 3-15. Result Code Definitions (Cont’d)Code Message Meaning183 CONNECT 33333 The modem has connected to the lin
Command Reference Manual1199 4-14. FAX CLASS 1 AND FAX CLASS 1.0 COMMANDS4.1 FAX I/O PROCESSINGThe fax I/O interface supports asynchronous serial and
Command Reference Manual4-2 11994.1.4 Fax OriginationOrigination of fax calls is made using the ATD command. Upon completion of the dial function, a c
Command Reference Manual1199 4-3If the modem detects a frame abort sequence (seven consecutive ones with no zero insertion) while it is waiting for a
Command Reference Manual4-4 11994.2 COMMANDS AND PARAMETERS4.2.1 Mode Entry Commands4.2.1.1 +FCLASS=1 - Select Facsimile Class 1 Mode+FCLASS=1 selects
Command Reference Manual1199 4-54.2.2.3 +FTS - Transmit SilenceThis command causes the modem to terminate a transmission and wait for <time> 10-
Command Reference Manual4-6 11994.2.2.5 +FTM - Transmit FacsimileThis command causes the modem to transmit data using the modulation defined below. Wh
Command Reference Manual1199 4-74.2.2.6 +FRM - Receive FacsimileThis command causes the modem to enter the receiver mode using the modulation defined
Command Reference Manual1199 1-11. INTRODUCTION1.1 OVERVIEWThis manual describes the host command and responses for the following Rockwell modem famil
Command Reference Manual4-8 11994.2.2.7 +FTH - Transmit Data with HDLC FramingThis command causes the modem to transmit data using HDLC protocol and t
Command Reference Manual1199 4-94.2.2.8 +FRH - Receive Data with HDLC FramingThis command causes the modem to receive frames using HDLC protocol and t
Command Reference Manual4-10 11994.2.3 Service Class 1 Parameters4.2.3.1 +FAR - Adaptive Reception Control If Adaptive Reception is enabled, the modem
Command Reference Manual1199 4-114.2.3.3 +FDD - Double Escape Character ReplacementThis parameter conditions the use of the •DLE•••SUB• pair to encode
Command Reference Manual4-12 11994.2.3.4 +FIT - DTE Inactivity TimeoutThis command specifies a DTE inactivity timeout value that allows the modem to b
Command Reference Manual1199 4-134.2.3.5 +FPR - Fixed DTE RateThis numeric extended-format parameter specifies the data rate at which the modem will a
Command Reference Manual4-14 11994.2.3.8 +FMR? - Request Revision IdentificationThis command causes the modem to transmit one or more lines of informa
Command Reference Manual1199 4-15 Table 4-4. Fax Class 1 Calling Sequence (Transmitting a Single Page)DTE Commands Modem Responses Local Modem Action
Command Reference Manual4-16 1199 Table 4-5. Fax Class 1 Answering Sequence (Receiving a Single Page)DTE Commands Modem Responses Local Modem Action R
Command Reference Manual1199 5-15. FAX CLASS 2 COMMANDSThe Fax Class 2 commands are summarized in Table 5-1.5.1 COMMAND SYNTAX AND GUIDELINES5.1.1 Mod
Command Reference Manual1-2 11991.1.3 Call Progress and Blacklisting ParametersThe modem MCU firmware may be provided either in reconfigurable form or
Command Reference Manual5-2 1199General Rules1. +Fnnn commands must be entered completely, otherwise an ERROR response is sent.2. All response message
Command Reference Manual1199 5-33. Fax Class 2 commands can be separated by the “:” character. The “;” character can be omitted if desired. Non-dataco
Command Reference Manual5-4 11995.1.5 Identification of T.30 OptionsGroup 3 devices negotiate session parameters in DIS, DCS, and DTC frames. These pa
Command Reference Manual1199 5-55.3.1 ATD - Originate a CallSyntax: ATD...<CR>The DCE can support a DTE command to originate a call using the A
Command Reference Manual5-6 11995.3.3 +FDT - Data TransmissionSyntax: +FDT <CR>The +FDT command prefixes Phase C data transmission. When the D
Command Reference Manual1199 5-7 Table 5-2. T.30 Session Subparameter CodesLabel Function Value DescriptionVR Vertical Resolution 0 Normal, 98 lpi1 Fi
Command Reference Manual5-8 11995.3.4 +FET - Transmit Page PunctuationSyntax: +FET=<ppm>[,<pc>,<bc>,<fc>]DCE response:+FPTS:&l
Command Reference Manual1199 5-95.3.5 +FDR - Begin or Continue Phase C Receive DataSyntax: +FDR <CR>Default value: 3 seconds in some placesThe +
Command Reference Manual5-10 11995.3.5.2 Continue Document ReceptionThe DTE may issue a +FDR command in Phase D, which releases the post page message,
Command Reference Manual1199 5-115.3.7 +FCIG - Set Polling IDThis command allows setting the Local Polling ID string used in a CIG frame. The syntax o
Command Reference Manual1199 2-12. SYNTAX AND PROCEDURESThe command and response syntax and procedures generally conform to referenced recommendations
Command Reference Manual5-12 1199 Table 5-5. Hang Up Status CodesCode Cause Description0-9 Call Placement and Termination0 Normal and proper end of co
Command Reference Manual1199 5-135.4 SERVICE CLASS 2 DCE RESPONSESThe DCE sends information responses to the DTE as a facsimile session proceeds. They
Command Reference Manual5-14 11995.4.7 +FPTS: - Receive Page Transfer StatusSyntax: +FPTS:<ppr>, <lc> [,<blc>, <cblc>]The +FPT
Command Reference Manual1199 5-155.4.11 +FCIG: - Report the Polled Station IDSyntax: +FCIG: “< ID string>” Polled Station IDThis response
Command Reference Manual5-16 11995.5 SERVICE CLASS 2 PARAMETERSAll Service Class 2 parameters can be read, written, and tested for range of legal valu
Command Reference Manual1199 5-175.5.3 +FDCS - Current Session Results ParametersRead syntax: +FDCS?DCE response: +FDCS=VR,BR,WD,LN,DF,EC,BF,STor +FDC
Command Reference Manual5-18 11995.5.4 +FLID= - Local ID StringWrite syntax: +FLID="<local ID string>"Valid value: 20-character ASCII
Command Reference Manual1199 5-19The +FPHCTO command determines how long the DCE will wait for a command after reaching the end of data whentransmitti
Command Reference Manual5-20 11995.5.12 +FBUF? - Buffer SizeRead syntax: +FBUF?DCE response syntax: <bs>, <xoft>, <xont>, <bc>
Command Reference Manual1199 5-21 Table 5-6. Send Two Pages, 1-D, No ErrorsDTE Command DCE Response Local DTE Action Remote Station ActionAT+CLASS=2 O
Command Reference Manual2-2 11992.2.4 Repeating a Command LineIf the prefix "A/" or "a/" is received, the modem immediately execut
Command Reference Manual5-22 1199 Table 5-7. Receive Two Pages, 1-D Data, No ErrorsDTE Command DCE Response Local DTE Action Remote Station ActionAT+F
Command Reference Manual1199 6-16. VOICE COMMANDS6.1 Voice Commands OverviewVoice commands are identified in Table 6-1. Table 6-1. Voice CommandsComma
Command Reference Manual6-2 11996.1.1 <DLE> Shielded Event Codes Sent to the DTETable 6-2 lists the supported <DLE> shielded codes sent to
Command Reference Manual1199 6-36.1.2 <DLE> Shielded Codes Sent to the Modem (DCE)Table 6-3 lists the supported <DLE> shielded codes sent
Command Reference Manual6-4 11996.2 Voice Commands6.2.1 Configuration Commands6.2.1.1 +FCLASS=8 - Select Voice Mode+FCLASS=8 selects the Voice Mode. T
Command Reference Manual1199 6-56.2.2 Voice Commands6.2.2.1 +VIP - Voice Initialize All ParametersThis command causes the modem to initialize all voic
Command Reference Manual6-6 11996.2.2.3 +VTS - Send Voice Tone(s)This command causes the modem to send DTMF digit or hookflash tones with the duration
Command Reference Manual1199 6-7Example 1. This example illustrates tone generation without using any null elements. The command example is followed b
Command Reference Manual6-8 11996.2.2.4 +VTX - Start Modem Transmit (Playback)This command causes the modem to start the voice transmission process.Sy
Command Reference Manual1199 6-96.2.2.7 +VIT - Voice Inactivity Timer (DTE/Modem)This command sets the modem’s initial value for the DTE/modem inactiv
Command Reference Manual1199 2-32.4 Extended Syntax Commands2.4.1 Command Naming RulesBoth actions and parameters have names, which are used in the re
Command Reference Manual6-10 11996.2.2.8 +VLS - Analog Source/Destination SelectionThis command causes the modem to select one or more source/destinat
Command Reference Manual1199 6-11 Table 6-5. +VLS Command OptionsLabel Primitives Description +VTX +VRX +VSP=10 None DCE on-hook. Local phone connecte
Command Reference Manual6-12 1199 Table 6-6. Events Detectable in the Voice Mode per V.253Event Number Event Description Event Reporting0 Caller Id Re
Command Reference Manual1199 6-136.2.2.9 +VRA - Ringback Goes Away TimerThis command sets the length of time the modem will wait between ringbacks dur
Command Reference Manual6-14 11996.2.2.11 +VSD - Silence Detection (Quiet and Silence)This command causes the modem to set the silence detection sensi
Command Reference Manual1199 6-156.2.2.12 +VSM - Compression Method Selection This command causes the modem to set the voice compression method, the s
Command Reference Manual6-16 11996.2.2.13 +VTD - Beep Tone Duration TimerThis command causes the modem to set the default DTMF/tone generation duratio
Command Reference Manual1199 6-176.2.2.14 +VDR - Distinctive RingThis command causes the modem to enable or disable reporting of the ring cadence info
Command Reference Manual6-18 11996.2.2.15 +VDT - Control Tone Cadence ReportingThis command allows the modem to enable or disable reporting of the con
Command Reference Manual1199 6-196.2.2.16 +VPR - Select DTE/Modem Interface Rate (Turn Off Autobaud) This command selects the DTE/modem interface rate
Command Reference Manual2-4 11992.4.2.3 Compound ValuesActions may have more than one subparameter associated with them, and parameters may have more
Command Reference Manual6-20 11996.2.3 Speakerphone Commands6.2.3.1 +VSP - Speakerphone ON/OFFThis command turns the speakerphone ON or OFFSyntax+VSP=
Command Reference Manual1199 6-216.2.3.3 +VGM - Microphone GainThis command causes the modem to set the microphone gain of the speakerphone function.S
Command Reference Manual6-22 1199This page is intentionally blank.
Command Reference Manual1199 7-17. INDEX##UD – Last Call Status Report... 3-51%%7 - Plug and Play Serial N
Command Reference Manual7-2 1199+FK - Session Termination ... 5-10+FLID= - Local ID String ...
Command Reference Manual1199 7-3S2 - Escape Character... 3-62S20 - Reserved...
Command Reference Manual1199 7-4This page is intentionally blank.
INSIDE BACK COVER NOTES
Command Reference Manual1199 2-5respond with an ERROR result code, if the continued correct operation of the interface between the modem and DTE will
Command Reference Manual2-6 11992.5 Issuing CommandsAll characters in a command line must be issued at the same data rate, and with the same parity an
Command Reference Manual1199 2-72.7.1 ResponsesThere are two types of responses that may be issued by the modem: information text and result codes.Inf
Command Reference Manualii 1199NOTICEInformation furnished by Rockwell International Corporation is believed to be accurate and reliable. However,no r
Command Reference Manual2-8 1199A single space character separates the colon character from the <value>; no space appears between the result cod
Command Reference Manual1199 3-13. DATA COMMAND SET3.1 COMMAND GUIDELINESThe commands used to control and report modem operation in data modem mode ar
Command Reference Manual3-2 11993.2.1.2 +FCLASS - Select Active Service ClassThis command selects the active service class (mode).Syntax+FCLASS=<mo
Command Reference Manual1199 3-33.2.1.4 \N - Operating ModeThis command controls the preferred error correcting mode to be negotiated in a subsequent
Command Reference Manual3-4 11993.2.1.5 -SMS= - Select ModeSelects Data mode, AudioSpan (analog simultaneous voice and data), or DSVD (digital simulta
Command Reference Manual1199 3-53.2.1.6 I - IdentificationThis command causes the modem to reports the requested result according to the command param
Command Reference Manual3-6 11993.2.1.7 +GMI - Request Manufacturer IdentificationThis command causes the modem to report the modem product manufactur
Command Reference Manual1199 3-73.2.1.11 +GCI - Country of InstallationThis extended syntax command selects and indicates the country of installation
Command Reference Manual3-8 11993.2.1.12 &F - Restore Factory Configuration (Profile)The modem loads the factory default configuration (profile).
Command Reference Manual1199 3-93.2.1.15 &W - Store Current ConfigurationSaves the current (active) configuration (profile), including S-Parameter
Command Reference Manual1199 iiiTable of Contents1. INTRODUCTION...
Command Reference Manual3-10 11993.2.1.18 %8 - Plug and Play Vendor ID and Product NumberSets and stores Vendor ID and product number for serial Plug
Command Reference Manual1199 3-118. The following messages may occur during the uploading process:Message DescriptionDevice not supported Displayed if
Command Reference Manual3-12 11993.2.2.2 Q - Quiet Results Codes ControlThe command enables or disables the sending of result codes to the DTE. The pa
Command Reference Manual1199 3-133.2.2.5 X - Extended Result CodesThis command selects the subset of the result code messages used by the modem to inf
Command Reference Manual3-14 1199 Table 3-1. Result CodesShort Form Long Form n Value in ATXn Command Notes01234+F4+FCERROR xxxxx0 OK xxxxx1 CONNECT x
Command Reference Manual1199 3-15 Table 3-1. Result Codes (Cont'd)Short Form Long Form n Value in ATXn Command Notes0123463 CONNECT 26400 1 x x x
Command Reference Manual3-16 1199 Table 3-1. Result Codes (Cont'd)Short Form Long Form n Value in ATXn Command Notes01234170 CONNECT 42000 xxxxxN
Command Reference Manual1199 3-173.2.2.6 &C - RLSD (DCD) OptionThe modem controls the RLSD output in accordance with the parameter supplied. The p
Command Reference Manual3-18 11993.2.2.8 &K - Flow ControlThis command defines the DTE/DCE (terminal/modem) flow control mechanism. The parameter
Command Reference Manual1199 3-193.2.2.10 &Q - Sync/Async ModeThis command is an extension of the &M command and is used to control the connec
Command Reference Manualiv 11993. DATA COMMAND SET...
Command Reference Manual3-20 11993.2.2.12 &S - DSR OverrideThis command selects how the modem will control DSR. The parameter value, if valid, is
Command Reference Manual1199 3-213.2.2.14 +IPR - Fixed DTE RateThis numeric extended-format parameter specifies the data rate at which the modem will
Command Reference Manual3-22 11993.2.2.15 +IFC - DTE-Modem Local Flow ControlThis extended-format compound parameter controls the operation of local f
Command Reference Manual1199 3-23Reporting Supported Range of Parameter ValuesCommand: +ILRR=?Response: +ILRR: (<value> range)Example: +ILRR: (0
Command Reference Manual3-24 1199Defined Values<string> Character string corresponding to the selected option(s).0-9 DTMF digits 0 to 9.* The &a
Command Reference Manual1199 3-253.2.3.2 T - Set Tone Dial DefaultThis command forces DTMF dialing until the next P dial modifier or P command is rece
Command Reference Manual3-26 11993.2.3.6 O - Return to On-Line Data ModeThis command determines how the modem will enter the on-line data mode. If in
Command Reference Manual1199 3-273.2.3.9 &G - Select Guard ToneThis command causes the modem to generate the guard tone selected by this command (
Command Reference Manual3-28 11993.2.3.11 &V - Display Current Configuration and Stored ProfilesThis command rReports the current (active) configu
Command Reference Manual1199 3-293.2.3.12 &V1 - Display Last Connection StatisticsDisplays the last connection statistics in the following format
Command Reference Manual1199 v3.2.3.17 *D - Display Delayed Numbers ...
Command Reference Manual3-30 11993.2.3.13 \V - Single Line Connect Message EnableThis command enables or disables the single line connect message form
Command Reference Manual1199 3-313.2.3.15 %Q - Report Line Signal QualityReports the line signal quality (DAA dependent). Returns the higher order byt
Command Reference Manual3-32 11993.2.3.18 –STE= - Set Telephony ExtensionThis command enables/disables Line-In-Use and Extension Pickup/Remote Hangup
Command Reference Manual1199 3-333.2.4 Modulation Control Commands3.2.4.1 +MS - Modulation SelectionThis extended-format compound parameter controls t
Command Reference Manual3-34 1199Reporting Current or Selected ValuesCommand: +MS?Response: +MS: <carrier>,<automode>,<min_tx_rate>,
Command Reference Manual1199 3-35+MCR: Report SyntaxResponse: +MCR: <carrier><carrier> Alphanumeric code corresponding to the reported car
Command Reference Manual3-36 11993.2.4.4 %U - Select µ-Law or A-Law Codec TypeThis command selects µ-Law or A-Law codec type for V.90 and K56flex modu
Command Reference Manual1199 3-373.2.5 Error Control Commands3.2.5.1 +ES - Error Control and Synchronous Mode SelectionThis extended-format command sp
Command Reference Manual3-38 1199Examples+ES=6 Enable V.80 Synchronous Access Mode originator+ES=,,8 Enable V.80 Synchronous Access Mode answerer+ES=6
Command Reference Manual1199 3-39Reporting Supported Range of Parameter ValuesCommand: +EB=?Response: +EB: (<break_selection> range),(<timed&
Command Reference Manualvi 11993.3.3.19 S22 - Speaker/Results Bit Mapped Options Status ...
Command Reference Manual3-40 1199Reporting Supported Range of Parameter ValuesCommand: +ER=?Response: +ER: (<value> range)Example: +ER: (0,1)+ER
Command Reference Manual1199 3-413.2.5.7 \B - Transmit Break to RemoteIn non-error correction mode, the modem will transmit a break signal to the remo
Command Reference Manual3-42 11993.2.5.8 \K - Break ControlControls the response of the modem to a break received from the DTE or the remote modem or
Command Reference Manual1199 3-433.2.5.9 -K - MNP Extended ServicesEnables or disables conversion of a V.42 LAPM connection to an MNP 10 connection. T
Command Reference Manual3-44 1199Reporting Supported Range of Parameter ValuesCommand: +DS=?Response: +DS: (<direction> range),(< compr_neg &
Command Reference Manual1199 3-453.2.6.3 %C - Enable/Disable Data CompressionEnables or disables data compression negotiation. The modem can only perf
Command Reference Manual3-46 11993.2.7 V.8/V.8bis Commands3.2.7.1 +A8E - V.8 and V.8bis Operation ControlsThis command is defined for two conditions:
Command Reference Manual1199 3-47Reporting Supported Range of Parameter ValuesCommand: +A8E=?Response: +A8E: (<v8o> range),(<v8a> range),
Command Reference Manual3-48 11993.2.8 Synchronous Access Mode CommandsThree commands support Synchronous Access Mode:+ES Enables and disables Synchr
Command Reference Manual1199 3-49Reporting Selected OptionsThe modem reports the selected options in response to the following command:+ESA?The respon
Command Reference Manual1199 vii4.2.2.8 +FRH - Receive Data with HDLC Framing...
Command Reference Manual3-50 11993.2.8.3 +ITF - Transmit Flow Control ThresholdsThe +ITF command determines the flow control thresholds used by the mo
Command Reference Manual1199 3-513.2.9 Diagnostic Commands3.2.9.1 #UD – Last Call Status Report#UD is an action command requesting reporting of logged
Command Reference Manual3-52 1199Command SyntaxIn response to this command, the modem will report one or more lines of information text as defined bel
Command Reference Manual1199 3-53 Table 3-3. AT#UD Last Call Status Report FormatKey Value(s) Definition0 2 digits Diagnostic Command Specification re
Command Reference Manual3-54 1199 Table 3-4. Call Setup Result CodesCode Definition0 No previous call (modem log has been cleared since any previous c
Command Reference Manual1199 3-55 Table 3-8. gstnModulationSchemeActive from 3.7.2/V.58Value Description0 V.17 (G3 Fax call)1V.212V.223 V.22bis4 V.23
Command Reference Manual3-56 1199 Table 3-11. callCleared codes from 3.6.4/V.58-1994Value Description Notes0 CauseUnidentified Call setup issues1 No P
Command Reference Manual1199 3-57Example Modem Response and UsageExample #UD commend response are shown in Table 3-12. Table 3-12. Completed Data Call
Command Reference Manual3-58 11993.2.10 Compatibility Commands3.2.10.1 &L - Leased Line OperationThis command requests leased line or dial-up oper
Command Reference Manual1199 3-593.2.10.4 :E - Compromise Equalizer Enable Command This command is included for compatibility only and has no effect o
Command Reference Manualviii 11995.4 SERVICE CLASS 2 DCE RESPONSES...
Command Reference Manual3-60 11993.3 S-PARAMETERSThe S-Parameters are summarized in Table 3-13 along with their default values; registers denoted with
Command Reference Manual1199 3-61 Table 3-13. S-Parameter SummaryRegister Function Range Units Saved Default**S0 Rings to Auto-Answer 0-255 rings * 0S
Command Reference Manual3-62 11993.3.3 S-PARAMETER DEFINITIONS3.3.3.1 S0 - Number of Rings to Auto-AnswerS0 sets the number of the rings required befo
Command Reference Manual1199 3-633.3.3.7 S6 - Wait Time before Blind Dialing or for Dial ToneS6 operation is country dependent.1. Sets the length of t
Command Reference Manual3-64 11993.3.3.12 S11 - DTMF Tone Duration S11 operation is country dependent.1. For US models, S11 sets the duration of tones
Command Reference Manual1199 3-653.3.3.15 S16 - Test Mode Bit Mapped Options StatusS16 indicates the test in progress status.Default: 0Bit 0 Local ana
Command Reference Manual3-66 11993.3.3.19 S22 - Speaker/Results Bit Mapped Options StatusS22 indicates the status of command options.Default: 117 (75h
Command Reference Manual1199 3-673.3.3.23 S26 - RTS to CTS Delay S26 sets the time delay, in hundredths of a second, before the modem turns CTS ON aft
Command Reference Manual3-68 11993.3.3.26 S29 - Flash Dial Modifier TimeS29 sets the length of time, in units of 10 ms, that the modem will go on-hook
Command Reference Manual1199 3-693.3.3.30 S38 - Delay Before Forced Hang UpS38 specifies the delay between the modem's receipt of the H command t
Command Reference Manual1199 ix6.2.2.16 +VPR - Select DTE/Modem Interface Rate (Turn Off Autobaud)... 6-196.
Command Reference Manual3-70 11993.3.3.33 S41 - General Bit Mapped Options StatusS41 indicates the status of command options.Default: 13 (C3h) (000011
Command Reference Manual1199 3-713.3.3.36 S86 - Call Failure Reason CodeWhen the modem issues a NO CARRIER result code, a value is written to S86 Regi
Command Reference Manual3-72 11993.3.3.37 S91 - PSTN Transmit Attenuation LevelIn non-PCM modes (V.90 or K56flex are PCM modes), S91 sets the transmit
Command Reference Manual1199 3-733.3.3.40 S210 – V.34 Symbol RatesThe bits in this parameter control V.34 symbols rates and enables/disables V.34 asym
Command Reference Manual3-74 11993.4 CELLULAR COMMANDSCellular direct connect, supported by portable application modems, allows a direct interface to
Command Reference Manual1199 3-753.4.2.3 ^T6 - Indicate Status of Cellular PhoneThe status of the cellular phone connected to the modem is reported in
Command Reference Manual3-76 1199If MNP10-EC is enabled manually (using AT-SEC=1) no particular modulation will be chosen, therefore if the user wishe
Command Reference Manual1199 3-77 Table 3-14. Remote Modem Configuration and Resulting Transmit LevelsRemote ModemConfigurationBase Site Configuration
Command Reference Manual3-78 11993.5 RESULT CODESThe modem responds to commands from the DTE and to activity on the line by signaling to the DTE in th
Command Reference Manual1199 3-79 Table 3-15. Result Code DefinitionsCode Message Meaning+F4 +FCERROR High speed fax data (V.27, V.29, V.33, or V.17)
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