Table Of Contents
AT Command Set and Register Summary for Cisco MICA Six-Port Modules
DEBUGTHISMODEM (Debug This Modem)
Sn (Point to a New Configuration Register)
Sn? (Read Configuration Register)
%R (Verbose Display of the Modem Configuration)
\D{command} {modem} (DSP Debug Options)
\S (Verbose Display of Current Modem Statistics)
Point to a New Reference Register
Change the Value of a Register
Display the Value of the Reference Register
Change the Value of the Reference Register
S0 (Automatic Answer in Seconds)
S3 (Carriage Return Character)
S7 (Wait for Circuit to Establish)
S8 (Pause Time for Comma Dial Modifier)
S10 (Delay for Hang-up After Carrier Loss)
S12 (Number of Async Data Bits)
S15 (V.42 Detect Phase Operation)
S16 (Error Correction Autodetect Timeout)
S17 (Error Correction Negotiation Timeout)
S18 (Error Correction Fallback Character)
S19 (Error Correction Retransmission Limit)
S20 (Error Correction Max Frame Length)
S22 (ARA Error Correction Options)
S23 (V.42 LAP-M Error Correction)
S26 (DSP Processor MVIP TDM Slice)
Digital and Analog Modulations
S32 (Signal Quality Threshold)
S33 (Speed Change Squelch Timer)
S37 (Wait for Carrier After Dial)
S38 (Delay for Hang-up After Carrier Loss)
S40 (Consecutive Retrain Disconnect Threshold)
S41 (V.34 Maximum Symbol Rate)
S42 (V.34 Minimum Symbol Rate)
S44 (V.34 Preemphasis Filter Selection)
S46 (Call Progress Tone Detection)
S47 (Hayes +++ Escape Detection)
S50 (Maximum PCM Connect Rate)
S51 (Minimum PCM Connect Rate)
S52 (Digital Pad Compensation)
S56 (Set Maximum V.34+ Transmit Rate)
S58 (V.110 Flow Control and Clock Bits)
S59 (V.90 Transmit Level Setting)
S65 (V.44 Maximum TX Codewords)
S66 (V.44 Maximum RX Codewords)
S67 (V.44 Maximum TX String Length)
S68 (V.44 Maximum RX String Length)
S69 (V.44 Maximum TX History Size)
S70 (V.44 Maximum RX History Size)
S71 (V.90 Uplink Max Symbol Rate)
S72 (V.90 Uplink Min Symbol Rate)
S73 (LinkInfo#32 Information Selector)
Obtaining Technical Assistance
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AT Command Set and Register Summary for Cisco MICA Six-Port Modules
April 6, 2002
This document describes modem AT commands and S registers for Cisco MICA six-port modules.
AT commands are modem commands that are prefixed with the characters AT. Cisco MICA stands for modem ISDN channel aggregation, the Cisco high-density modem technology.
For information about managing modems on Cisco access servers using Cisco IOS commands, refer to the software configuration guide for the access server in which the modems are installed.
Note
The defaults and limits on parameters described in this document are valid for the United States. They may not be appropriate for use in other countries.
If you have questions or need help, refer to the section "Obtaining Documentation" on page 61 .
This document contains the following sections:
•
Entering AT Commands
To send AT commands to the modem, you must first put the modem in AT command mode. Entering AT command mode involves a reverse Telnet procedure. The table below shows how to enter AT command mode from Cisco IOS EXEC mode using reverse Telnet.
Note
Use these guidelines when you send AT commands to a modem:
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•
•
•
•
•
•
•
•
•
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–
–
–
The escape code can be enabled and disabled; for instructions, see "S2 (Escape Code Character)," on page 25, and "S47 (Hayes +++ Escape Detection)" on page 46 .
Alphabetic Command Set
This section describes modem commands that begin with an alphabetic character (A to Z).
A/ (Repeat Last Command)
Re-executes the last command one time. If there is no previous command, the modem displays OK. Do not enter the AT prefix before A/. Usually, you need not enter Return after A/.
Note
A (Answer)
Forces the modem off-hook in answer mode, regardless of the value of register S11. The modem must be in the command state when you use the Answer command. If the modem is not in the command state, it responds to this command with a result code of ERROR.
AT (Attention)
Informs the modem that commands are being sent to it. The modem displays OK. AT must precede all other commands except A/ and +++.
D {dial string} (Dial)
Dials a telephone number, establishing a connection. Always make the Dial command the last (or the only) command on the command line. The dial string can contain up to 49 characters; valid characters are the digits 0 to 9, and for tone dialing, the letters A, B, C, and D, and the characters # and *. If your access server is running Cisco IOS Release 12.1(4)T or greater, you can also use these dial modifiers in your dial string: the letters W (wait for dial tone) and X (switch to DTMF signaling) and the comma character, (delay by the number of seconds specified in register S8). If you are running a release earlier than 12.1(4)T, the W, X, and comma modifiers are accepted but ignored.
The modem ignores invalid characters. If you enter dial strings longer than 49 characters, the result code ERROR appears. The following example shows the command used to dial the telephone number 1 (617) 555-1234:
D 1 (617) 555-1234The modem ignores the spaces, parentheses, and hyphen in the example's dial string: they are not dialed and they do not count against the 49-character limit.
To cancel the Dial command, press any key, or clear the call from the router or access server.
The modem must be in the command state when you use the Dial command. If the modem is in the escape state, it responds to this command with a result code of ERROR.
For compatibility, the modem accepts these dial modifiers but does not act on them:
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•
•
•
•
DEBUGTHISMODEM (Debug This Modem)
Enables debugging features, which include the following:
DI {dial string} (ISDN Dial)
Places an ISDN call, establishing a connection. In order to use the DI command, you must set register S29 to a compatible call type. The call type for ISDN is V.110 (S29 = 8). See "S29 (Modulation Standard)," on page 36.
The ISDN Dial command must be the last command on the command line. The dial string can contain up to 49 characters; valid characters are the digits 0 to 9, and for tone dialing, the letters A, B, C, and D and # and *. If your access server is running Cisco IOS Release 12.1(4)T or greater, you can also use these dial modifiers in your dial string: the letters W (wait for dial tone) and X (switch to DTMF signaling) and the comma character, (delay by the number of seconds specified in register S8). If you are running a release earlier than 12.1(4)T, the W, X, and comma modifiers are accepted but ignored.
The modem (and/or the host) ignores invalid characters. If you enter a dial string longer than 49 characters, the modem returns the result code ERROR. The following example shows the command used to dial the telephone number 1 (617) 555-1234
DI 1 (617) 555-1234The modem ignores the spaces, parentheses, and hyphen in the example's dial string: they are not dialed and they do not count against the 49-character limit.
To cancel the ISDN Dial command, press any key, or clear the call from the router or access server.
The modem must be in the command state when you use the ISDN Dial command. If the modem is in the escape state, it responds to this command with a result code of ERROR.
For compatibility, the modem accepts these dial modifiers but does not act on them:
•
•
•
•
•
En (Command Echo)
Configures the modem to echo commands to the workstation. lists command echo options.
Default
E1
Table 1 Command Echo Options
E0
Disables echoing of commands to the workstation
E1
Enables echoing of commands to the workstation
H (Hang Up)
Disconnects this modem from the remote system and hangs up the telephone line.
In (Inquiry)
Displays modem information and results of checksum tests on firmware. The following table lists inquiry command options.
Table 2 Inquiry Command Options
Ln (Monitor Speaker Loudness)
This command is provided for compatibility; it has no effect. (The modem responds OK but takes no action.) However, the value of n must be in the range 0 to 3; if you enter a different value, the modem displays an ERROR result code.
Mn (Monitor Speaker Mode)
This command is provided for compatibility; it has no effect. (The modem responds OK but takes no action.) However, the value of n must be in the range 0 to 2; if another value is used, the modem returns an ERROR result code.
O (Online from Escape Mode)
Changes the modem to the online state (connected, or steady state) from escape mode. The modem displays a connect message.
P (Pulse Dial)
This command is provided for compatibility; it has no effect. (The modem responds OK but takes no action.)
Qn (Quiet)
Configures the modem to send (or not send) result and status codes, such as OK, ERROR, and BUSY, to your workstation. The following table lists quiet mode command options.
Note
Default
Q0
Table 3 Quiet Mode Command Options
Q0
Enables output of result codes
Q1
Disables output of result codes
Q2
Enables output of result codes only when the modem is originating calls
Sn (Point to a New Configuration Register)
Sets the modem register pointer to S register n (where n is a decimal number). Register n becomes the current register and is addressed by subsequent register commands. If you enter a value for n that is outside the range of S register numbers, the command fails (returns ERROR). For descriptions of the S registers and a summary of commands you can use to manipulate S registers, see "Modem S Register Summary" on page 23 . See also "%R (Verbose Display of the Modem Configuration)" on page 12 .
Range
0 to 75. (The range is determined by the numbers of the S registers, which can change from one Cisco MICA Portware release to the next as new S registers are added.)
Default
S0
Sn? (Read Configuration Register)
Displays the contents of S register n (where n is a decimal number). For descriptions of the S registers, see "Modem S Register Summary" on page 23 . See also "%R (Verbose Display of the Modem Configuration)" on page 12 .
Range
0 to 75
Default
S0
Sn=y (Set Configuration Register to a Decimal Value)
Sn=>y (Set Configuration Register to a Hexadecimal Value)Sets the contents of S register n (where n is a decimal number) to the value y. Some invalid values for y cause the command to fail (returning ERROR), even though other invalid values are accepted. For descriptions of the S registers, see "Modem S Register Summary" on page 23 .
Range
n: 0 to 75
y: depends on n, the register selectedT (Tone Dial)
This command is provided for compatibility; it has no effect. (The modem responds OK but takes no action.)
Vn (Result Code Format)
Selects the format (short or long) of the result codes sent to your workstation. describes the result codes. The following table lists options for the result code format command.
Note
Table 4 Result Codes
0
OK
Command accepted, ready for next command.
1
CONNECT
A connection has been established. The long result code may be followed on the same line by speed and protocol information, depending on the setting of the X command. See "Xn (Extended Result Codes)" in the next section.
2
RING
Ring signal indicated.
3
NO CARRIER
Indicates one of the following:
Carrier signal was not detected.
Carrier signal was lost for the period specified in register S10.
The other modem indicated disconnection (with error correction only).
An unrecoverable error occurred (with error correction only).
4
ERROR
Indicates one of the following:
Invalid command or checksum.
Command line exceeds 128 characters.
Dial string exceeds 49 characters.
5
—
Not used.
6
NO DIALTONE
Dial tone was not detected, or in channelized T1 there was no trunk to seize.
7
BUSY
Busy (line engaged) signal or number unobtainable signal detected.)
8
NO ANSWER
There was no answer-back tone. (Either the call was not answered, or a human being answered.)
9
(ABORTED)
An operator pressed any key to abort a D (Dial) or A (Answer) command.
Default
V1
Table 5 Options for Result Code Format Command
Xn (Extended Result Codes)
Selects the extended result code format sent to the workstation. lists options for the extended result codes command.
Before dialling, the modem waits for the time delay specified in register S6. (See "S6 (Wait Before Dialing)" on page 26 for information on register S6.)
See also the previous section, "Vn (Result Code Format)." You can use the Vn command to select short or long form result codes.
Default
X4
Table 6 Options for Extended Result Codes Command
X0
Sends the CONNECT result code when a connection is established.
X1
X2
X3
X4Sends a verbose connect message1 when a connection is established.
1 The connect message for X1 through X4 includes the rate in bits per second of the connection, the protocol used, and the compression type. For example, a connect message might read "CONNECT 33600 /V.42/V.42bis". (X0 sends only the result code, CONNECT.)
Z (Reset)
Hangs up the telephone line, clears the modem, and restores the factory default settings.
Percent Command Set
This section describes the modem command that begins with a percent (%) character.
%R (Verbose Display of the Modem Configuration)
Reads and displays the modem configuration, showing the contents of modem S registers first as a list of values in hexadecimal and decimal format (the Configuration Summary), and then as a more detailed table with register settings in decimal (in the Value column) and descriptions of the registers. Press Q to stop the display. This is a sample of the output resulting from the %R command:
AT%RCisco MICA Hex Modem Module ConfigurationCONFIGURATION SUMMARYREG = HEX/DEC REG = HEX/DEC REG = HEX/DEC REG = HEX/DECS00 = 0002/2 S02 = 002B/43 S03 = 000D/13 S04 = 000A/10S05 = 0008/8 S06 = 0002/2 S07 = 003C/60 S08 = 0002/2S09 = 012D/301 S10 = 000E/14 S11 = 0000/0 S12 = 0008/8S13 = 0000/0 S14 = 0001/1 S15 = 0001/1 S16 = 0032/50S17 = 0064/100 S18 = 000D/13 S19 = 000C/12 S20 = 0100/256S21 = 000F/15 S22 = 0000/0 S23 = 0001/1 S24 = 0001/1S25 = 0000/0 S26 = 0000/0 S27 = 0000/0 S28 = 0000/0S29 = 000C/12 S30 = 8340/33600 S31 = 012C/300 S32 = 0002/2S33 = 01F4/500 S34 = 07D0/2000 S35 = 0032/50 S36 = 0014/20S37 = 003C/60 S38 = 000E/14 S39 = 0007/7 S40 = 0004/4S41 = 0005/5 S42 = 0000/0 S43 = 0002/2 S44 = 000B/11S45 = 0000/0 S46 = 0000/0 S47 = 0002/2 S48 = 0001/1S49 = 0000/0 S50 = EA60/60000 S51 = 6D60/28000 S52 = 0001/1S53 = 0003/3 S54 = 00C8/200 S55 = 0000/0 S56 = 8340/33600S57 = 2580/9600 S58 = 0000/0 S59 = 0006/6 S60 = 000F/15S61 = 0000/0 S62 = 0000/0 S63 = 0003/3 S64 = 0000/0S65 = 0800/2048 S66 = 0800/2048 S67 = 00FF/255 S68 = 00FF/255S69 = 3A98/15000 S70 = 3A98/15000S71 = 0005/5 S72 = 0003/3 S73 = 0000/0Reg Value Description--- ----- -----------S0 [ 2] Automatic AnswerS2 [ 43] Escape Code CharacterS3 [ 13] Carriage Return CharacterS4 [ 10] Line Feed CharacterS5 [ 8] Backspace CharacterS6 [ 2] Pause Before Blind Dialing (seconds)S7 [ 60] Connect Complete Timeout (seconds)S8 [ 2] Comma Dial Modifier Time (seconds)S9 [ 317] Bit-Mapped Register0 = Command echo0 = E0 - No echo1 = E1 - Echo1,2 = Result codes0 = Q0 - Output result code1 = Q1 - No result codes2 = Q2 - No result codes in Answer mode3 = Result type0 = V0 - Short form1 = V1 - Long form4,5 = Data Terminal Ready0 = &D0 - Ignore DTR1 = &D1 - Modem enters command state2 = &D2 - Modem goes on hook3 = &D3 - Modem is reset6,7,8 = CONNECT Result Code & Call ProgressText Busy NoDT0 = X0 - N N N1 = X1 - Y N N2 = X2 - Y N Y3 = X3 - Y Y N4 = X4 - Y Y YS10 [ 14] Automatic Disconnect DelayS11 [ 0] Link Initiate Action0 = Answer 1 = OriginateS12 [ 8] Number of async data bits- NO PROTOCOL ASYNC MODE ONLY -7 = 7 data bits8 = 8 data bitsS13 [ 0] Parity Configuration- NO PROTOCOL ASYNC MODE ONLY -0 = No parity1 = Even parity2 = Odd parity3 = Mark parity4 = Space parityS14 [ 1] Stop Bit Configuration- NO PROTOCOL ASYNC MODE ONLY -1 = 1 stop bit 2 = 2 stop bitsS15 [ 1] V.42 detect phase0 = Disabled 1 = EnabledS16 [ 50] EC Autodetect Time-out (100 msec)S17 [ 100] EC Negotiate Time-out (100 msec)S18 [ 13] EC Fallback CharacterS19 [ 12] EC Retransmission LimitS20 [ 256] EC max packet length (64..1024)max window = 8192/<length>S21 [ 15] Data Compression (bit mapped)0 = Disabled1 = V.42bis2 = MNP54 = V.44 Tx8 = V.44 RxNote:Combinations are supported. Thepriority from highest to lowest is:LAPM- V.44, V.42bis, none.MNP- V.42bis, MNP5, none.S22 [ 0] ARA Error Correction0 = Disabled1 = Answer any ARA, don't originate2 = Originate ARA1.0, answer any3 = Originate ARA2.0, answer anyS23 [ 1] V.42 (LAPM) Error Correction0 = Disabled 1 = EnabledS24 [ 1] MNP (2-4) Error Correction0 = Disabled 1 = EnabledS25 [ 0] Fallback Link Protocol0 = Async data mode1 = Sync data mode2 = HangupS26 [ 0] MVIP TimesliceS27 [ 0] Calling Tone0 = Disabled 1 = EnabledS28 [ 0] Guard Tone0 = Disabled 1 = EnabledS29 [ 12] Modulation Standards0 = V.34+ Automode, with terbo1 = V.34+ Automode, no terbo2 = V.32 terbo Automode3 = V.32bis Automode4 = V.22bis Automode5 = K56FLEX 1.1 Automode6 = V.90 Automode7 = SS78 = V.110 Automode9 = Piafs Automode12 = V.92 AutomodeS30 [33600] Maximum Connect Rate(75 to 33600 bps, >=Min)S31 [ 300] Minimum Connect Rate(75 to 33600 bps, <=Max)S32 [ 2] Signal Quality Threshold0 = No action on bit errors1 = Bers >= 1:1002 = Bers >= 1:10003 = Bers >= 1:100004 = Bers >= 1:1000005 = Bers >= 1:1000000S33 [ 500] Speed change squelch time (1 msec)S34 [ 2000] Fall-forward timer (10 msec)S35 [ 50] Fallback timer (10 msec)S36 [ 20] Terminate timeout (1 sec)S37 [ 60] S7:Delay til data mode (1 sec)S38 [ 14] S10:Lost carrier hangup timer (100 msec)S39 [ 7] Transmit Level Setting0:-6dBm 4:-10dBm 8:-14dBm 12:-18dBm1:-7dBm 5:-11dBm 9:-15dBm 13:-19dBm2:-8dBm 6:-12dBm 10:-16dBm 14:-20dBm3:-9dBm 7:-13dBm 11:-17dBm 15:-21dBmS40 [ 4] Consecutive retrain disconnect thresholdS41 [ 5] V.34 Maximum Symbol RateS42 [ 0] V.34 Minimum Symbol RateS43 [ 2] V.34 Carrier FrequencyS44 [ 11] V.34 Preemphasis Filter SelectionS45 [ 0] Signaling type for use on T1/R2 trunks0 = Null Signaling 4 = Hi Band R2 Signaling1 = MF Signaling 5 = Modified R1 Signaling2 = DTMF Signaling 6 = SS7/COT Signaling3 = Low Band R2 SignalingS46 [ 0] Call progress detection (bit mapped)0 = Disabled 2 = Ringback1 = Dialtone 4 = BusyS47 [ 2] Hayes escape detector0 = Disabled 1 = Enabled2 = Enabled only in Originate modeS48 [ 1] AT command processor0 = Disabled 1 = EnabledS49 [ 0] Call Setup delay (100 msec)S50 [60000] PCM Maximum Connect Rate(28000 to 60000 bps, >=Min)S51 [28000] PCM Minimum Connect Rate(28000 to 60000 bps, <=Max)S52 [ 1] PCM Digital Pad compensation0 = Disabled 1 = EnabledS53 [ 3] V.8bis capability (bit mapped)0 = All V.8bis Options Disabled - (disables K56flex)1 = Enable/Disable V.8bis negotiation2 = Enable/Disable V.90 negotiation in V.8bis3 = Enable V.90 negotiation in V.8bis - (enables K56flex)S54 [ 200] General Purpose (bit mapped)0 = All general options DISABLED1 = Automatic Host Debug Messages ENABLED2 = Aggressive Client Capping ENABLED4 = Force four point training8 = Enable power control16 = Enable error correction quality checking32 = Cap Rx rate to 26400 when detecting PC-Tel64 = Enable UART functionality128 = Boost SQ threshold by 0.5256 = Disable DSP reset functionality512 = Enable V110 blind connect1024 = Enable additional S detector bandedge check2048-32768 = Reserved for Future UseS55 [ 0] SS7/COT ControlRTcc.cttt.tttt.tttt RT:0=1780,1=2010 Hzccc:0=R-T,1=T-R,2=R,3=T,4=R&T t:10msS56 [33600] Maximum V.34 TX bit rate(4800 to 33600 bps, >=Min)S57 [ 9600] V.110 User Rate(600 to 38400 bps, >=Min)S58 [ 0] V.110 Flow/Clock bits0 = OriginateSet by Q.931 = AnswerS59 [ 6] V90 Transmit Level Setting0:-6dBm 4:-10dBm 8:-14dBm 12:-18dBm1:-7dBm 5:-11dBm 9:-15dBm 13:-19dBm2:-8dBm 6:-12dBm 10:-16dBm 14:-20dBm3:-9dBm 7:-13dBm 11:-17dBm 15:-21dBmS60 [ 15] Sticky Flags0 = All negotiable features disabled1 = UnsTermMsg2 = Mica Capabilities Mask4 = Activate in-band PPP mode switches8 = Redwood. Link information maintained in shared memorybetween Portware and BoardwareS61 [ 0] Reserved for future useS62 [ 0] MOH Exchange0:MOH Disabled 1:10 Seconds 2:20 Seconds 3:30 Seconds4:40 Seconds 5:1 Minute 6:2 Minutes 7:3 Minutes8:4 Minutes 9:6 Minutes 10:8 Minutes 11:12 Minutes12:16 Minutes 13:UnlimitedS63 [ 3] QC ExchangeBit 0:Quick Connect Enable/DisableBits 1-2 (ANSpcm level) :00:-9dBm01:-12dBm10:-15dBm11:-18dBmS64 [ 0] Link Standards0 = Disable Automode1 = V.902 = K56FLEX 1.13 = V.344 = V.32bis5 = V.326 = V.22bis7 = V.228 = V.219 = V.2310 = BELL21211 = BELL103S65 [ 2048] V.44 Max Tx Codewords(256 to 2048)S66 [ 2048] V.44 Max Rx Codewords(256 to 2048)S67 [ 255] V.44 Max Tx String Length(32 to 255)S68 [ 255] V.44 Max Rx String Length(32 to 255)S69 [15000] V.44 Max Tx History Size(512 to 15000)S70 [15000] V.44 Max Rx History Size(512 to 15000)S71 [ 5] V.90 Uplink Maximum Symbol RateS72 [ 3] V.90 Uplink Minimum Symbol RateS73 [ 0] Link Info #32 Select0 = Combination of 1,2 and 31 = DIL status/client modem ID (V.90 only)2 = TxQ underrun3 = CP-DSP DMA over/underruns4 = Raw bad frame countOKAmpersand Command Set
This section describes modem commands that begin with an ampersand (&) character.
&Cn (Serial Port DCD Control)
This command is provided for compatibility; it has no effect. (The modem responds OK but takes no action.) Note, however, that n must be 0 or 1. The modem range-checks the value of n, so if you enter something other than 0 or 1, the modem returns an error.
Note
&Dn (DTR Control)
Specifies the modem action when the host's (DTE's) data terminal ready (DTR) transitions off (as when the user's session ends). DTR processing is virtualized on Cisco MICA modems because there is no physical EIA interface. Table 7 lists DTR control command options.
Note
Default
&D3
Table 7 DTR Control Command Options
&F (Restore Factory Defaults)
Hangs up the telephone line, clears the modem, and restores the factory default configuration, with several exceptions—the following values are preserved:
•
•
•
This command can also be entered as &F0.
&Tn (Diagnostic Test Mode)
Tests the modem hardware. The following table lists modem test options.
Default
&T5
Table 8 Modem Test Options
+F Command Set
Fax Class 2 and Class 2.0 modem commands begin with the characters +F. Fax commands are not used by humans; they are accessed by software only.
The following table lists the Fax commands supported by Cisco Portware. For more information on Class 2 commands, see the Electronic Industries Association publication Standards Proposal No. 2388, August 20, 1990, Asynchronous Facsimile DCE Control Standard. For more information on Class 2.0 commands, see the Electronic Industries Association publication EIA/TIA-592, Asynchronous Facsimile DCE Control Standard.
Table 9 Fax (+F) Commands Supported by Portware
In addition to the commands listed above, these Class 2 commands are defined in TIA/EIA SP-2388 and are supported in Cisco MICA Portware: ATA, ATDnumber, ATE0, ATS0=n, and ATV1.
The Class 2.0 command ATDnumber is defined in TIA/EIA-592 and is supported in Cisco MICA Portware.
Backslash Command Set
This section describes modem commands that begin with a backslash (\) character.
\B (Transmit a Break)
Sends a break (in async mode, a 300-millisecond break) that is nondestructive (does not cause data to be lost) and expedited (does not wait behind data that was entered before it). The break can be transmitted in LAP-M mode, MNP mode, and async mode.
For compatibility, Cisco MICA modems accept a numeric argument immediately following the \B command, but the argument is ignored.
Default
\B
\D{command} {modem} (DSP Debug Options)
Sends the specified debug command to another modem on the same module as this modem. Replace command with a number from 0 to 4:
Replace modem with the number identifying the modem to which you want to issue the command. For example, enter AT\D2 1 to send a retrain command to modem number 1. If you omit the modem argument, Cisco MICA sends the command to the current modem.
In order to use this protected command, you must first execute the DEBUGTHISMODEM command.
Default
\D0
\Qn (Flow Control)
In fax mode, enables and disables flow control for the modem. The following table lists flow control command options.
Note
Default
\Q0
Table 10 Flow Control Command Options (Fax Mode Only)
\S (Verbose Display of Current Modem Statistics)
Displays a detailed list of the modem's current link statistics, including the elapsed connect time, counts of bytes in and out, and IP and EC packets sent and received. Press any key to display the next screen. Press Q to cancel the display. If a number is too large to be displayed, its left-most digit appears as a hash mark (#).
This is an example of the output resulting from the \S command:
AT\SCisco MICA Hex Modem Link StatisticsHost interface protocol (IP) RAWData compression protocol V.44 BothLine interface protocol (EC) V.42 (LAP-M)Line modulation standard V.34+Line transfer rates 28800 bps TX and 28800 bps RXThe modem has been connected 0 days, 0:00:45Last disconnect reason 0x0000Current line quality 5Bytes sent to host 514 Bytes rcvd from host 12Bytes rcvd from line 11 Bytes sent to line 4Bytes estimated lost 0 Bytes resent to line 0IP packets rcvd from line 0 IP packets sent to line 0IP packets rcvd errored 0 IP packets aborted 0EC frames rcvd from line 4 EC frames sent to line 4EC avg RX frame length 0 EC current TX frame length 256EC NAKs rcvd from line 0 EC NAKs sent to line 0EC frames known lost 0 EC frames retransmitted 0EC retransmission cycles 0 EC timer recoveries 0EC neg RX frame length 256 EC neg TX frame length 256EC neg RX window 30 EC neg TX window 30DC negotiated RX Codewords 2048 DC negotiated TX Codewords 2048DC negotiated RX String Length 255 DC negotiated TX String Length 255DC negotiated RX History Size 15000 DC negotiated TX History Size 15000DC Decoder State (RX) COMPRESSED DC Encoder State (TX) COMPRESSEDDC RX Dictionary Reset Count 1 DC TX Dictionary Reset Count 1DC RX Compression Ratio *100 98 DC TX Compression Ratio *100 188.Tx. / .Rx.Carrier Frequency (Hz) 1959 / 1959Symbol rate (baud/sec) 3429 / 3429Trellis code 16 / 16Non-linear encoding Off / OffPrecoding Off / OffConstellation shaping Off / OffPreemphasis index 0 / 0Power level (dBm) -15 / -14Power level reduction (dBm) 2 / 2Strike a key when ready (Q to QUIT)SNR (dB) 40Far-end echo (dBm) -68Round-trip delay (ms) 3Frequency offset (Hz) 0.0Phase roll freq (Hz) 4.0Phase jitter freq (Hz) 0.0Phase jitter level (deg) 0RBS Pattern 0x00Digital Pad (dB) 0.0Digital Pad Compensation OffSS7/COT Status (iWwOBbT) 0x0000Line Probe Results:................................*................................*................................*................................*................................*................................*................................*................................*................................*
Guest
