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Reference

Guide

R A C K

Product Code:
PRO16RK: Boca PRO16 Rack Chassis
PRO16RM: Boca PRO16 Rack Modem
PRO16RC: Boca PRO16 Rack Controller
PRO16RP: Boca PRO16 Rack Power Supply

pro16ref.pm6

6/14/96, 2:35 PM

1

Summary of Contents for Pro16 Series

Page 1: ...Reference Guide R A C K Product Code PRO16RK Boca PRO16 Rack Chassis PRO16RM Boca PRO16 Rack Modem PRO16RC Boca PRO16 Rack Controller PRO16RP Boca PRO16 Rack Power Supply...

Page 2: ...2 BOCA PRO16 Reference Guide...

Page 3: ...mand 20 The Help Command 20 Response Codes 21 Testing 21 The Test Timer 21 Terminating a Test T0 21 Local Analog Loopback Test T1 21 Local Digital Loopback Test T3 22 Grant RDL from Remote Modem T4 23...

Page 4: ...ecurity File 41 Uploading the Security File 41 Encryption 42 SuperSecure Advanced Security Mode 43 Entering Key for Each User 44 Accessing a System Using SuperSecure 45 Connection 45 Disconnection 45...

Page 5: ...art Leased Line Mode 58 Calling Answering Using L1 59 Auto Leased Line Operation L2 or L3 59 Hanging Up 59 Improving the Reliability of Leased Line Connections 60 Dumb Mode Operation 61 Selecting Dumb...

Page 6: ...peeds 77 Modem Cable 77 Synchronous Character Encoding 77 Asynchronous Notes 78 BSC Notes 78 HDLC Notes 78 Command Descriptions 79 Alphabetical Command listing 79 Full Command Descriptions 82 V 25bis...

Page 7: ...Answer Modem 209 Using your Modem with BBS Software 210 Using Connected to UNIX Computer 211 Using in Leased Line Mode 212 Synchronous Mode 213 Appendices 214 Appendix A 214 Modem Response Codes 214 V...

Page 8: ...ng Started qA complete description about how to get started using your equip ment including basic details and more advanced topics Testing qDetails each of the many tests you can carry out to determin...

Page 9: ...s you to S Registers and how to use them qContains a description of the available S Registers Troubleshooting qProvides basic guidelines for solving problems Sample Setups qProvides sample setups show...

Page 10: ...R key is labelled RETURN You press RETURN or ENTER as appropriate for your keyboard The same is true for keyboards showing a symbol rather than RETURN or ENTER RETURN ENTER In some cases where the E s...

Page 11: ...e modem when operating in originate mode waits no longer than 30 seconds for a carrier to be detected from a remote modem DEFAULTS are settings which are preset in the factory Default settings are ind...

Page 12: ...t basic form of the D command is ATD NUMBER where the number is the telephone number you are dialing Having set your communications software for 2400 bps operation Type ATD01234 E Your modem will begi...

Page 13: ...aling can start Usually this is done by your communications software If the DTR signal is lowered at any stage of communications after the D2 command has been issued the modem will hang up and return...

Page 14: ...nces with some older telephone exchanges dial tone detection may not be possible with your modem Your modem will only recognize dial tones between 200 Hz and 600 Hz If your telephone line supports ton...

Page 15: ...ew Zealand Refer to your Installation Guide for details Hanging Up The H command is used to hang up the modem After you have finished communicating with another computer you must hang up your modem Si...

Page 16: ...ber If synchronous mode 2 is being used the semi colon dial modifier should not be included Answering Calls As well as dialing other modems your modem can answer calls made to it by other modems Async...

Page 17: ...an incoming call The communications standard used by the modem in its attempt to connect with a calling modem is determined by the B command If the phone does ring and verbal response codes are select...

Page 18: ...dem s firmware identity message will appear on your com puter screen If you type I9 only your modem will not respond If you type AT19 your modem will report an ERROR You may enter the attention code i...

Page 19: ...uence consists of a one second delay three characters typed rapidly and another one second delay For example Type AT T1 E The modem will enter on line state this command actually causes the modem to e...

Page 20: ...previ ously engaged The Help Command Your modem will display information about the AT commands it supports if you type a question mark in your AT command For example Type AT E Your modem will display...

Page 21: ...timer may be set between 1 and 255 seconds or disabled by selecting zero seconds the default If the test timer is disabled tests must be terminated by issuing the T0 command Terminating a Test T0 The...

Page 22: ...automatically An OK message will appear as soon as the timer expires FIf your modem does not pass this test the message was corrupted or there was no response from the modem at all contact your dealer...

Page 23: ...will grant an RDL test if requested by a remote modem This is the factory default setting Deny RDL from Remote Modem T5 The T5 command configures your modem so it will prevent a remote modem from star...

Page 24: ...een should display what is being typed To terminate the test Type an escape sequence The test will be terminated and you will be returned to local command state Type AT T0 E An OK message will appear...

Page 25: ...correction is switched on Prior to connecting to the remote modem you must disable error correction Type AT N0 E Once you have connected to the remote modem Type Type AT T7 E Your modem will begin to...

Page 26: ...E Your modem will begin to loopback a defined data pattern To terminate the test Type AT T0 E Type AT N3 E The number of errors detected by the modem will be displayed An error count of 255 indicates...

Page 27: ...tocols are not available when a V 23 connection is established V 42 is an international standard for error correction between modems V 42 ensures any errors introduced into your data by telephone line...

Page 28: ...cter repeated For example if you have a file which contained 50 zero characters in sequence MNP 5 will do a good job of compressing them in some instances better than V 42bis this is run length encodi...

Page 29: ...BAL 20 CONNECT REL 300bps connection with error correction 22 CONNECT 1200 REL 1200 bps connection with error correction 23 CONNECT 2400 REL 2400 bps connection with error correction 24 CONNECT 4800 R...

Page 30: ...s neither an error correction or data compression technique MNP 10 works in conjunction with error correction and data compres sion to improve the performance of your modem when operating with poor or...

Page 31: ...e with bad telephone connections your modem must be able to first make a connection with another modem before it can make use of MNP 10 For this reason you may wish to use the AT H1 command to force y...

Page 32: ...N3 C2 K1 V 42bis V 42 MNP 2 4 MNP 5 MNP 10 Error Correction Data Compression Extended Services Good Better Best AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AAAA AA...

Page 33: ...to set your modem for a constant speed of 19 200 bps 38 400 bps or higher set the terminal speed of your computer to 19 200 bps 38 400 bps or higher and issue the command AT N3 to the modem with flow...

Page 34: ...12000 REL 27 CONNECT 14400 REL 28 CONNECT 7200 REL FSome computers cannot cope with receiving data at speeds above 19 200 bps If you wish to run at high speeds you should install a COM port that has a...

Page 35: ...d caller manages to break the modem s security that caller must be connected to the phone number specified in the remote modem s database Also discussed in this section is the topic of DES Data Encryp...

Page 36: ...ou will be prompted to enter a new security password Your modem is case insensitive Up to 8 characters may be used including spaces When you enter your password each character will appear on the scree...

Page 37: ...mand Modem commands consist of up to 30 characters and may include spaces When you enter a new command the previous command will be overwritten FDo not include an Attention Code AT with your command Y...

Page 38: ...r name Your modem allows every caller three attempts to enter the correct user name and password If the caller cannot correctly enter the password a record is made by your modem that an unsuccessful a...

Page 39: ...be a slight delay between the time the modems connect and when the caller is asked to enter his user name When the caller enters his name all characters will be displayed as characters The caller is a...

Page 40: ...a dial command It is necessary therefore to place another value in S Register 27 to allow the caller s modem sufficient time to hang up before your modem begins to dial A 30 second delay should be su...

Page 41: ...and Line Feed The last entry has only a CR LF Example FRED NURK HS27 30DT3277502 000 000 is a valid entry FThe download will take place at the current terminal speed No flow control is acknowledged I...

Page 42: ...tion mode when using DES encryption This will ensure you will only establish encrypted connections Refer to the N command in the Commands sections of this guide for details of the reli able error corr...

Page 43: ...Encryption Menu Select the Quit option from the Security Menu To enable DES encryption issue the AT E1 command The next time your modem establishes a connection with another modem it will encrypt out...

Page 44: ...use this character is reserved When the modem prompts you for a command do not enter a command because you will not be prompted for the DES KEYS Enter the 16 hex digit DES secondary KEY for the user a...

Page 45: ...password stored in the remote modem then Enter your password stored in your modem Press ENTER FYou may backspace to correct errors but you will not be able to see what is typed since all characters a...

Page 46: ...if the secondary KEY IV or KE are different Enabling Rotating Secondary Keys qIf you enter a KE of 00 for the user then the secondary key will remain the same for each connection qIf the KE is not 00...

Page 47: ...before a password expires 1 255 days The access record Option 4 displays the password age limit and the age of each user s password qWhen a password is within 5 days of expiration a message will be g...

Page 48: ...name and pass word before being able to enter your new password Minimum Password Length You can specify the minimum password length accepted by the modem by the E option from the Security Menu Its pow...

Page 49: ...format as the other records The three digit control field at the start of each record should be set to the following values for a new user 000 Not SuperSecure User no DES keys specified use for dialb...

Page 50: ...ion Outdial Disable Option If modems are to be used only for receiving calls option K can be selected This does not allow the modem to dial out If an attempt to do so users will be informed that a SEC...

Page 51: ...odem and your computer It should be kept visible at all times to prevent wire tapping The modem computer and interconnecting cable should be physically secure to prevent access FWith specialized equip...

Page 52: ...upport asynchronous and synchronous communication on a single RS 232 port Mode 2 allows your modem to be operated with dedicated synchronous terminals Although your modem can only operate over a singl...

Page 53: ...refers to modem line speed For V 34 or V FC the B setting only sets the maximum speed The modem will automatically determine the highest usable speed for the line Synchronous Mode 1 Your modem is capa...

Page 54: ...ur computer must be in asynchronous mode before dialing com mences To begin dialing use the D command Response codes sent to the computer depend upon the settings of theX V and Q commands As soon as a...

Page 55: ...issued Answering Calls To automatically answer incoming calls S Register 0 must be set to a non zero value as with asynchronous auto answering Once a call has been answered there is no means of return...

Page 56: ...g will commence as soon as the DTR signal is asserted an OFF ON transition occurs Your modem will not generate response codes when synchronous mode 2 is selected All call progress is indicated by your...

Page 57: ...d Line Operations A leased line or private line is a telephone line that permanently connects two or more locations The leased line does not have any switching equipment associated with it Leased line...

Page 58: ...pt to connect using the communications stan dard specified by the B command and the terminal speed Once a connection has been established if your modem detects a loss of carrier it will continuously a...

Page 59: ...DTR is low Irrespective of the D setting your modem will remain in idle mode when DTR is low and will go on line when DTR is high If DTR is lowered when your modem is on line it will hang up and retur...

Page 60: ...e the modem is attempting to re establish a connection Improving the Reliability of Leased Line Connections If you are experiencing data errors over leased lines issue the L command to lower the trans...

Page 61: ...a ProRack modem Place front panel Option switch 6 in the On or Left position To select Smart mode Place front panel Option switch 6 in the Off or Right position ProRack Modem Option Switches Setting U...

Page 62: ...ify that Option switch 5 is in the Off or Right position Refer to the table printed in your modem Installation Guide it shows the meaning of each combination of the Mode LEDs To change the speed at wh...

Page 63: ...omputer or a serial server refer to the modem Installation Guide for details Run a communications program for Windows or TIP or CU for Unix and enter local mode or terminal mode Type ATE0Q1 N0 W E Exi...

Page 64: ...you are using your modem over leased lines do not store a phone number Type AT D2 M4 E or Type AT D2 M2 E Issue the M4 command if you wish to use asynchronous communica tions issue M2 if you wish to u...

Page 65: ...phone handset to have your modem answer incoming calls Place Option switch 6 in the Off or Right position Connect your modem to a personal computer refer to the modem Installation Guide for details Ru...

Page 66: ...ditional features in Smart mode The PRO16RK modem offers the following front panel Option switches Description Switch Auto answer enabled 5 Off Right Auto answer disabled 5 On Left Smart mode 6 Off Ri...

Page 67: ...o answer LEFT DUMB Mode RIGHT SMART Mode LEFT Synchronous Mode RIGHT Asynchronous Mode LEFT Originate Mode RIGHT Answer Mode TRANSMIT DATA RECEIVE DATA OFF HOOK CARRIER DETECT AUTO ANSWER TERMINAL REA...

Page 68: ...O O O O O O O O O O S O O 28800 bps 26400 bps 24000 bps 21600 bps 19200 bps 16800 bps 14400 bps 12000 bps 9600 bps 7200 bps 4800 bps 2400 bps 1200 bps V23 V21 Fax 14400 bps Fax 9600 bps Fax 7200 bps...

Page 69: ...V 25bis The modem operates in asynchronous mode using V 25bis command rather than AT commands Issue the AT M1 command to select this mode q Synchronous V 25bis with HDLC framing The modem communi cat...

Page 70: ...mand V 25bis Operation D Will act as if D2 is selected S0 Will act as if S0 1 These override settings are not stored in your modem s non volatile memory they are active only while V 25bis command mode...

Page 71: ...lished INC Incoming call detected CFI AB Call failure abort CFI ET Call failure engaged INV Invalid command These are the only indications supported by your modem When operating in asynchronous V 25bi...

Page 72: ...low Dial Modifiers Dial modifiers are characters than can be included in a phone number to make the modem perform special tasks while dialing For example not all modem users will be using a dedicated...

Page 73: ...ne exchanges dial tone detection may not be possible with your modem Your modem will only recognize dial tones between 200 Hz and 600 Hz If your telephone supports tone dialing then a useful dial modi...

Page 74: ...store phone numbers for redialing at a later time For example to store a phone number use the PRN command Type PRN 1 012345 E The phone number 012345 will be stored as phone number one To dial a phone...

Page 75: ...ons section of this guide for more information about the dial modifiers supported in V 25bis mode FDirect dialing is also supported in V 25bis dumb mode Answering Calls Your modem is pre configured to...

Page 76: ...ssue the DIC command but then want to answer the call issue the CIC command The CIC command will cause your modem to answer a call after the DIC command has been issued The modem will then go on line...

Page 77: ...odem cable must support the following signals DB25 Pin Signal 2 Transmit Data TxD 3 Receive Data RxD 4 Request to Send RTS 5 Clear to Send CTS 6 Data Set Ready DSR 7 Signal Ground 8 Data Carrier Detec...

Page 78: ...cters that do not form part of the frame are treated as a normal characters This usually results in the modem issuing an INV indication HDLC Notes Commands must be correctly framed to be accepted by t...

Page 79: ...M initiate MNP 10 at 4800bps 91 J initiate MNP 10 at 1200 bps 91 K MNP 10 cellular option 91 F or disable calling tones 91 L last number redial 92 hook flash 92 S n dial stored phone number n 93 W wai...

Page 80: ...B0 B2 1200bps Originate Mode 127 C V 25 Calling Tones 128 D V 25bis Direct Calling 128 E Encryption 129 F Front Panel Test Switches 130 I V 22bis Leased Line 130 J V 42 Capability Checking 131 K MNP 1...

Page 81: ...ss Through 158 C Disable V 34 use V FC 159 R V 13 Remote RTS Signalling 160 S Change Current User Password 161 V Maximum V 42bis Dictionary Size 161 W Welcome Message Text 162 YEscape Sequence Detecti...

Page 82: ...s to local command state it will respond with the mes sage OK This waiting period before and after the escape sequence is called the Escape Sequence Guard Time This allows the modem to distinguish the...

Page 83: ...efore and after typing the Remote Access sequence The AT command must not be typed in front of the Remote Access sequence nor type a carriage return after it You may change the character used in the R...

Page 84: ...Guard Time S Register 67 Remote Access Character COMMAND MEANING Interactive Command Help Your modem will display information about the AT commands it supports if you type a question mark in your AT...

Page 85: ...peat Last Command This command orders the modem to re execute the last command you entered Unlike other commands the Repeat Last Command should not be preceded by an AT nor followed by a carriage retu...

Page 86: ...or Carrier COMMAND MEANING Bn Select Communications Standard Your modem is capable of connecting to remote systems using a variety of communications standards This command enables you to select the co...

Page 87: ...modem does not support V 34 See Also A command Answer C commandDisable V 34 B command Select Communication Standard D command Dial COMMAND MEANING D Dial This command allows you to dial a telephone nu...

Page 88: ...Delay Dial Modifiers Dial modifiers enable you to change the characteristics of dialing Definitions for all modifiers appear on the following pages Modifier Meaning pause return to local command stat...

Page 89: ...with a mainframe computer using security callback Your modem dials the number of the mainframe computer and then immediately returns to local command state An other ATD command can then be used to gen...

Page 90: ...mmunications If you communicate with another computer in originate mode at 1200 75 bps you will be sending data at 75 bps and receiving at 1200 bps If you have a lot of information to send and not muc...

Page 91: ...o suit the quality of the phone line Refer to the chapter titled Error Correction for details of MNP 10 For example To dial the number 999 9876 using MNP10 Type ATDJ9999876 E M initiate MNP 10 at 4800...

Page 92: ...signal the modem hangs up for a short period Hook flashes are commonly used with PBXs to transfer calls For example To dial 0 hook flash and then dial 12345 Type ATD0 12345 E S Register 29 sets the du...

Page 93: ...ister 7 Wait for Carrier and not the value in S Register 6 Wait for Dial Tone FUK Modems Setting S Register 7 with a value above 58 may invali date the approval of your modem S Register 7 must be set...

Page 94: ...up The H0 command Hang up is used to terminate a call The H1 command Go off hook can be used to make your modem appear as busy to a remote modem trying to dial in When you issue the H1 command the mod...

Page 95: ...cturer identification ATI8 Display complete product identification ATI9 Display complete product identification Range 0 5 8 9 COMMAND MEANING L Speaker Volume Control Your modem has a volume control w...

Page 96: ...d controls the operation of the speaker FSome modems also provide volume control via the L command Options ATM0 Speaker is always off n ATM1 Speaker is on whenever the modem is dialing or answering a...

Page 97: ...e an equalizer retrain An equalizer retrain conditions the phone line frequencies to reduce the levels of interference and improve data transmission FRetrains cannot overcome noise on the line Options...

Page 98: ...ort pulse dialing although the reverse is not always true Contact the supplier of your telephone line if you wish to have tone dialing accessible on your line FPulse dialing may not be supported in Ne...

Page 99: ...uses autobauding meaning that when you issue commands to your modem it automatically detects the speed at which you issue the commands and changes its terminal speed to match your computers terminal s...

Page 100: ...no autobaud ATR4 4800 bps locked terminal speed no autobaud ATR7 7200 bps locked terminal speed no autobaud ATR9 9600 bps locked terminal speed no autobaud ATR12 12 000 bps locked terminal speed no au...

Page 101: ...nd Set S Register Value V command View Configuration Profile COMMAND MEANING Sn Set S Register Value The Sn commands enables you to change the value in a Special Register S Register The format for the...

Page 102: ...dialing is used by your phone lift up the hand set and listen If you hear a continuous dial tone you probably can use tone dialing Normally only older telephone exchanges do not support tone dialing I...

Page 103: ...3 Carrier lost or not detected ERROR 4 Error in command string or command line longer than 80 characters or S69 time out Options ATV0 Numeric response codes n ATV1 Verbal response codes See Also X co...

Page 104: ...aning OK 0 Command accepted and executed CONNECT 1 Carrier detected and connection established RING 2 Ringing signal detected NO CARRIER 3 Carrier lost or not detected ERROR 4 Error in command or comm...

Page 105: ...ATX1 Display extended response codes 0 5 10 12 30 40 60 62 ATX2 Display extended response codes 0 6 10 12 30 40 60 62 ATX3 Display extended response codes 0 5 7 10 12 30 40 60 62 ATX4 Display extended...

Page 106: ...NNECT 1200 NO DIALTONE BUSY NO ANSWER CONNECT 2400 CONNECT 4800 CONNECT 9600 RINGING CONNECT REL CONNECT 1200 REL CONNECT 2400 REL CONNECT 4800 REL CONNECT 9600 REL CONNECT 12000 REL CONNECT 14400 REL...

Page 107: ...28800 CONNECT 57600 CONNECT 16800 REL CONNECT 19200 REL CONNECT 21600 REL CONNECT 24000 REL CONNECT 26400 REL CONNECT 28800 REL CONNECT 38400 REL CONNECT 57600 REL CONNECT 76800 CONNECT 96000 CONNECT...

Page 108: ...ation into profile 2 by using W2 you can restore the modem to the values contained in saved configuration 2 by Type ATZ2 E To restore factory defaults use the F command FThe Zn command must be the las...

Page 109: ...bit characters are selected Options AT B0 8 bit characters AT B1 9 bit characters AT B2 10 bit characters AT B3 11 bit characters n AT B4 Use 10 or 11 bit format as detected by autobaud Range 0 4 Dat...

Page 110: ...voice call to switch to fax or data mode without an interruption to the DCD signal which might cause the application to think that the line has been lost FThe C command will only have effect when the...

Page 111: ...modem will hang up return to local command state and disable auto answer while DTR is low is not as serted To enable auto answer the DTR signal must be asserted The computer must assert DTR before dia...

Page 112: ...rofiles in non volatile memory will be restored to factory defaults Type AT F Do not press ENTER A message will be displayed OK If you do not receive this message re check the connection of your modem...

Page 113: ...C0 The F2 command selects synchronous mode factory defaults The defaults selected are B13 E0 Q1 M2 You must use the W command if you wish to save the default values to non volatile memory and thus pre...

Page 114: ...ate guard tones of 550Hz AT G2 Generate guard tones of 1800Hz Range 0 2 COMMAND MEANING H Clock Control The H command determines when clocks will be applied to the RxC RS 232 signal With H0 selected t...

Page 115: ...variable speed mode AT N1 or is in local command state WARNING XON XOFF flow control must not be selected when you are using XModem YModem and SEAlink file transfers XON XOFF flow interferes with the...

Page 116: ...transmitted by the modem to the computer Range 0 3 5 9 See Also N command Operating Mode Q command Extended Flow Control S Register 80 Flow Control High Water Mark S Register 81 Flow Control Low Wate...

Page 117: ...synchronous Mode The M command enables you to select either asynchronous or syn chronous operation During asynchronous transmissions the time between characters being sent may vary and the characters...

Page 118: ...r to using this synchronous mode When your local computer asserts the DTR Data Terminal Ready signal the modem will dial stored phone number zero see the Zn command When an incoming call is detected t...

Page 119: ...position you will not be able to abort dialing after the D Dial command is issued Options AT N0 Disable abort connection nAT N1 Enable abort connection Range 0 1 COMMAND MEANING P Pulse Ratio Selecti...

Page 120: ...R1 CTS is always asserted Range 0 1 See Also R CTS Override COMMAND MEANING S Controlling DSR The Scommand allows the modem to control the state of the DSR Data Set Ready signal This command will only...

Page 121: ...ed in constant speed mode N0 The number of the test in progress is saved in S Register 16 FAll tests are detailed in the Testing Section of this guide Options Command Description AT T0 Terminate curre...

Page 122: ...iguration profile AT V0 View stored configuration profile 0 AT V1 View stored configuration profile 1 AT V2 View stored configuration profile 2 AT V3 View stored configuration profile 3 AT V8 View dif...

Page 123: ...tore active profile from stored configuration Y command Select Power up Profile COMMAND MEANING X Transmit Clock The X command nominates the source of itstransmit clock signal when operating in synchr...

Page 124: ...ect stored profile 2 on power up AT Y3 Select stored profile 3 on power up See Also D3 command Controlling DTR Range 0 3 COMMAND MEANING Z Stored Phone Number The Z command enables you to store phone...

Page 125: ...splay Options AT Z2 12345 Store the phone number 12345 as stored phone number two AT Z4 P0 T12345 Store the following as stored number four first pulse dial 0 wait for two seconds to get an outside li...

Page 126: ...s expecting is its security menu password see S com mand If no password has been defined remote access is disabled If the password you type is incorrect the following message appears Incorrect Please...

Page 127: ...Register 67 Remote access character Range 0 2 COMMAND MEANING B B0 B2 1200bps Originate Mode The B command determines whether the modem will use V 23 or V 22 for its 1200 bps originate speed when B0 o...

Page 128: ...erer of a call that a modem in data mode not fax is the originator of the call Options AT C0 V 25 calling tones disabled n AT C1 V 25 calling tones enabled See Also X command Response codes D command...

Page 129: ...Secure can be found in this guide in the Security Section WARNING Only reliable error correction modes should be used with DES This ensures only DES connections will be established with another modem...

Page 130: ...el tests AT F1 Enable front panel tests See Also T command Self Test Range 0 1 COMMAND MEANING I V 22bis Lease Line The ITU CCITT specifies that in V 22 and V 22bis a different handshake should be use...

Page 131: ...and when you are certain the other modem is a V 42 modem When J1 is selected your modem uses the V 42 detect phase to test whether the answering modem supports V 42 This allows your modem to fall back...

Page 132: ...10 over bad telephone lines or cellular connections issue the H1 command before dialing or use the J or L dial modifiers This ensures an MNP 10 connection is established Issue the AT K2 command for ce...

Page 133: ...raming AT M3 SynchronousV 25bis Characterframing BSCmode See Also Z command Reset W command Write Configuration Parameters Range 0 3 COMMAND MEANING N V 25bis Character Encoding Use the N command to s...

Page 134: ...buffer overflows that is data from the line to the modem S Register 42 is set to 9 AT O3 Modem disconnects if either buffer overflows S Register 42 will be set to 9 or 10 depending upon whether the li...

Page 135: ...nd will enable remote control mode After the command is issued any commands the remote modem sends to your modem will be acted upon by your modem as if commands were being issued from the computer att...

Page 136: ...enter the Security Menu mode When the modem is in Security Menu mode the Security Menu will be displayed on your computer screen You ll find details on the Security Menu and its use in the Security Se...

Page 137: ...t Your modem can check both AT com mands and values you write to the S Registers When you use the V0 command no checking is performed on com mands you issue If you issue an unsupported command the mod...

Page 138: ...Error Correction Section of this guide FWhen selecting a data compression mode error correction must also be selected See the N command for details of error correction Options AT C0 Compression disabl...

Page 139: ...CARRIER rather than OK if D is between 1 and 255 and the modem s buffers have not been emptied when it hangs up Options n AT D0 No disconnect delay AT D30 Set the disconnect delay to 30 seconds Range...

Page 140: ...r 45 V 22bis EQM Threshold Value O CommandReturn to On line State Q Command Line Signal Quality Range 0 2 COMMAND MEANING F Front Panel Options Switches Front panel Option switches 1 and 2 may be used...

Page 141: ...the chapter titled Error Correction for details of MNP 10 Options n AT H0 Use the B setting for initial MNP 10 connection speed The B setting is the maximum speed AT H1 Initial connection speed is mad...

Page 142: ...s to the modem when CTS is low Options n AT K0 CTS operates normally AT K1 CTS is lowered when an ATD command is issued and remains low until a connection is established See Also N command Abort Conne...

Page 143: ...ault 11dB 19dB transmit level Range 11 19 COMMAND MEANING M Mode LED Indication If your modem has three Mode LEDs you can use the M command to determine whether the LEDs will indicate the line speed o...

Page 144: ...computers require the CONNECT message to appear after DCD is asserted In this case the AT P1 command should be used Options n AT P0 CONNECT message appears before DCD is asserted AT P1 CONNECT messag...

Page 145: ...tch if your modem does not have one This command overrides any R setting FThe R command does not revert to the default setting after an ATZ AT F or modem power off is performed Options n AT R0 R comma...

Page 146: ...dden AT S1 DSR mimics the state of the DTR signal not reset by F Range 0 1 COMMAND MEANING T DCD Override The T command allows you to determine the state of the DCD signal T1 overrides any setting of...

Page 147: ...sued a CONNECT REL 10 or CON NECT LAP M message will be sent to your computer to indicate an MNP 10 or V 42 connection has been established FThe U command does not revert to the default setting after...

Page 148: ...a particular service provided by this modem or simply to identify the modem itself The message to be sent to the remote modem is specified by using the W command If used with dial back security the o...

Page 149: ...mand is used to send a break sequence to the remote modem of length n 100mS The length of the break sequence may be set from 0 1 seconds to 0 9 seconds The default length of breaks generated by the mo...

Page 150: ...CONNECT message to your computer The modem will alter its terminal speed to match the connection speed to the remote modem Options n AT J0 Fallback Constant Speed mode AT J1 Fallback to Variable Speed...

Page 151: ...nection K0 2 4 K1 K3 K5 Enter Local Command state do not send Break Empty data buffers in both sending and receiving modems and immediately send Break Immediately send Break Send data in buffer before...

Page 152: ...eed mode enabling the modem to use different terminal and line speeds Your modem supports constant terminal speeds from 300 bps to 115 200 bps With constant speed selected the modem could connect with...

Page 153: ...odes and is operating in on line state When answering the modem automatically adjusts its terminal speed to match the standard used by the calling modem FWith variable speed mode selected your modem s...

Page 154: ...he CTS Clear To Send signal to pause data flow but will not respond if the computer changes the state of the RTS Request To Send signal AT Q3 CTS RTS flow control 1 The modem and computer use the CTS...

Page 155: ...0 Clocks always present in sync mode K Flow Control 9 Auto CTS or XOFF to DTE only L Leased Line 0 Disabled PSTN mode M Synchronous Mode 0 Asynchronous N Abort Dial Character 1 Abort dial with any ch...

Page 156: ...p and return a NO CARRIER message with S42 12 The inactivity timer is only available when error correction or Constant Speed mode is selected It is ignored when variable speed mode synchronous communi...

Page 157: ...has been issued only the CONNECT REL will be generated by the modem regardless of the connection speed after the V1 command is issued V FC V 34 V 32 V 32bis Other Num Verbal Modems Modems Modems 20 CO...

Page 158: ...es plus details of the error correction and data compression negotiated with the remote modem and diagnostic information displayed immediately before the CONNECT message See Also X command Extended Re...

Page 159: ...Q command Extended Flow Control Range 0 1 COMMAND MEANING C Disable V 34 use V FC Although V 34 will auto connect to a V FC modem there may be situations where a V FC connection is desirable In this...

Page 160: ...ding a unique stream of data This stream of data will appear as garbage to the host which will discard it however the receiving modem in V 13 mode will recognize the stream and convey it to the host v...

Page 161: ...command Security menu COMMAND MEANING V Maximum V 42bis Dictionary Size The V 42bis dictionary size is normally negotiated during the V 42 handshake Boca Research PRO16RM modems have enough memory to...

Page 162: ...by the maximum command line size 80 The message may include new lines which are indicated by using the character If W1 is enabled the text you have specified will be displayed at the end of the V disp...

Page 163: ...issue as in asynchronous modes to return to command mode Options n AT Y0 Escape Sequence Detection in Sync mode disabled AT Y1 Escape Sequence Detection in Sync mode enabled COMMAND MEANING Q MNP10 Fa...

Page 164: ...E0 Disable the V 32 compromise equalizer n AT 11 Enable the V 32 compromise equalizer Range 0 1 COMMAND MEANING CIC Connect Incoming Call V 25bis The CIC command may be issued if you decide to accept...

Page 165: ...command Dial Modifiers Dial modifiers enable you to change the characteristics of dialing Definitions for all modifiers appear on the following pages Modifier Meaning pause P use pulse dialing T use t...

Page 166: ...en If you hear a continuous dial tone you probably can use tone dialing Normally only older telephone exchanges do not support tone dialing If you are still in doubt use pulse dialing Most exchanges s...

Page 167: ...ot the value in S Register 6 Wait for Dial Tone FUK Modems Setting S Register 7 with a value above 58 may invali date the approval of your modem S Register 7 must be set to 20 before issuing the dial...

Page 168: ...ll be ignored otherwise the modem will answer the call after the number of seconds defined by S Register 71 Options DICDisregard incoming call See Also CIC Connect incoming call S Register 71 Ignore i...

Page 169: ...issuing commands while you are working or permanently by using the W command to store changes you ve made in non volatile memory The RST command returns the modem to the last saved configuration and...

Page 170: ...check how long the modem will wait for a dial tone before starting to dial you would check S Register 6 To do this Type ATS6 E The modem will display the current contents of the S6 Register If you wa...

Page 171: ...can be used to provide a more permanent storage of changes you make to the settings of your modem Any parameter stored in RAM will take precedence over any other stored in non volatile memory or ROM...

Page 172: ...s with AT F will not save these default settings to non volatile memory To save factory defaults to non volatile memory so they can be used again after switching the modem off and on follow the F comm...

Page 173: ...27 Delay Before Dial 184 S 29 Hook Flash Duration 184 S 30 Inactivity Timer 185 S 33 EQM Threshold Value 186 S 38 Disconnect Delay 187 S 42 Modem Disconnect Reason 188 S 43 Break Sequence Length 189 S...

Page 174: ...Register 0 is 4 the modem will answer an incoming call after four rings Examples ATS0 0 Disable auto answer ATS0 4 Wait four rings before answering an incoming call Default 4 Range 0 255 S REGISTER ME...

Page 175: ...ecognition of the escape character Examples ATS2 36 Recognize three characters as the escape sequence ATS2 64 Recognize three characters as the escape sequence Default 43 the character See Also S Regi...

Page 176: ...S4 13 Recognize the Carriage Return character as the line feed Range 0 127 S REGISTER MEANING 5 Backspace Character S Register 5 contains the ASCII value of the character recognized by the modem as th...

Page 177: ...tone This provides slow telephone ex changes the opportunity to apply a dial tone to the line before the modem attempts to dial If the W dial modifier is included in the phone number being dialed the...

Page 178: ...he handshake The answering modem has 57 seconds to complete the handshake after starting answer tone This register is also used by the W modifier to determine how long the modem will wait for a dial t...

Page 179: ...tains the length of time in tenths of a second the modem will wait before asserting the DCD Data Carrier Detect signal after a carrier has been detected The longer the time taken before asserting DCD...

Page 180: ...t use the H command to hang up Examples ATS10 12 Wait 1 2 seconds after losing carrier before hanging up Default 18 Range 1 255 S REGISTER MEANING 11 DTMF Tone Dialing S Register 11 contains the time...

Page 181: ...u must maintain silence on the line for one second then type in rapid succession and then maintain another second s silence The guard time is in units of 20 milliseconds or 1 50 of a second FS Registe...

Page 182: ...contains the length of time in seconds that the modem will perform tests initiated with any of the T commands You can terminate any test by issuing an AT T0 command or by allowing the time in the Tes...

Page 183: ...oss of DTR Default 5 See Also D DTR Mode Range 0 255 S REGISTER MEANING 26 RTS CTS Delay If the RTS Request To Send signal is asserted when operating in synchronous mode the modem will wait for the pe...

Page 184: ...this register should always contain a zero value FUK Modems Waiting 30 seconds may not work with UK telephone exchanges Consult the supplier of your telephone line for a solution Examples ATS27 10 Wai...

Page 185: ...s selected Examples ATS30 60 Hang up after 10 minutes of inactivity on the line Default 0 See Also T command Set Inactivity Timer Range 0 255 Voice Mode This S Register sets how long the modem remains...

Page 186: ...ty connection Setting a high value in S33 will allow the modem to operate on degraded lines without invoking retrains A value of zero will also disable automatic EQM retraining for V 32 V 32bis V FC V...

Page 187: ...tents of its data buffers before actually going on hook If the modem empties its buffers before the defined disconnect delay expires the modem will hang up immediately The modem will respond with NO C...

Page 188: ...exceeded 9 Receive data buffer line buffer overflowed 10 Receive data buffer terminal buffer overflowed 11 Failure to negotiate MNP class 3 or 4 connection 12 Inactivity timer expired 13 Unable to est...

Page 189: ...mmand determines the length of breaks to the remote modem Each unit is equivalent to 0 02 second FS Register 43 does not affect the length of the break generated by the modem when variable speed mode...

Page 190: ...affect the data throughput and reliability of connections Default 98 Example ATS45 5 Set EQM threshold to 5 If EQM level is equal to or greater than 5 the modem will retrain the connection Range 0 255...

Page 191: ...aracter has been defined as asterisk you must maintain silence on the line for one second then type four asterisks in rapid succession then maintain another one second s silence The guard time is in u...

Page 192: ...gnize four characters as the remote access sequence Range 1 125 S REGISTER MEANING 69 Command Line Time Out S Register 69 determines how long you have to type a command after typing an AT expressed as...

Page 193: ...ll DIC command Disregard Incoming Call Range 0 30 S REGISTER MEANING 74 Disconnect Reason for Previous Call S Register 74 contains a value indicating the reason the modem returned to local command sta...

Page 194: ...ne call arrives in Digital SVD mode A ringing signal will also be generated if you have established a Digital SVD data connection and the remote user picks up his handset to initiate conversation Exam...

Page 195: ...e a sound reason for doing so the high water mark should never be set higher than 75 Using a higher water mark may cause problems with computers that are slow to respond to your modem s flow control E...

Page 196: ...his S Register unless you are an experi enced communications user An inappropriate value may cause flow control between your computer and modem to become unreliable Each unit is equivalent to 5 of you...

Page 197: ...control it will ignore the CTS signal and keep sending data S82 determines the number of characters the modem will accept after dropping CTS before sending XOFF If the value is too low some hosts wil...

Page 198: ...ero See Also W command Connection Messages Control X command Extended Response Codes Q command Quiet Suppress Response Codes Range 0 255 Bit Value Description 0 0 CONNECT message indicates line speed...

Page 199: ...S Register 97 Help Page Length V command View Active Configuration Profile Interactive Help Range 1 255 S REGISTER MEANING 97 Help Page Length This S Register allows you to set the length of each Hel...

Page 200: ...mode and when no characters are received from the computer If the Dead Man timer expires the modem returns to data mode This register may also be accessed by writing to S30 when in voice mode Examples...

Page 201: ...t is not appropriate for an LED to be lit In this case the TR LED will flash Solution Check that the power connector is firmly in place both at the back of the modem and at the wall socket Check that...

Page 202: ...ct Local with Check all your cable connections Check that your communications software is set for appropriate serial port on your computer If your modem is connected to COM1 make sure your communicati...

Page 203: ...heck you are using the same transmission speed as the remote modem Check you are using the same parity setting as the remote computer Start by setting to 8 Data No Parity 1 Stop or 7 Data Even Parity...

Page 204: ...he 16550 chip allows your computer to accept data at very high speed Problem Lines of incoming data are double spaced Solution This occurs when both the local and remote computers are sending linefeed...

Page 205: ...Reference Guide Troubleshooting Flow Chart The chart on the next two pages show some common problems users face Work through the chart You may be able to solve your problem yourself Troubleshooting T...

Page 206: ...when you press a key Check the connection of your modem cable NO YES NO NO YES Go To Next Page Connect the Modem to your computer the plug pack and the phone line See Installation section Call your D...

Page 207: ...of this Guide Check the terminal speed of your communications software and change it to the required speed Type ATD and press ENTER The OH LED should glow Do you hear a dial tone Check the connection...

Page 208: ...dem does not support it If you wish to fallback to MNP class 5 data compression and then non compression mode issue the C3 command instead of C2 K3 Selects RTS CTS flow control Your communications sof...

Page 209: ...her modem does not support it If you wish to fallback to MNP class 5 data compression and then non compression mode issue the C3 command instead of C2 K3 Selects RTS CTS flow control Your communicatio...

Page 210: ...s error correction Will fallback to non error correction mode if the other modem does not support it C2 Selects V 42bis data compression The modem will fallback to non compression mode the other modem...

Page 211: ...ue the C3 command instead of C2 K3 Selects RTS CTS flow control Your communications software must also have RTS CTS flow control selected This ensures data is not lost between your modem and computer...

Page 212: ...codes K3 Selects RTS CTS hardware flow control Your communications software must also have RTS CTS flow control selected L1 Selects leased line operation If the modem detects a loss of carrier it wil...

Page 213: ...the B8 command to connect at 2400 bps only S0 2 Selects the modem to auto answer incoming calls after two rings M2 Selects synchronous mode 2 The modem will dial stored phone number 0 if DTR is assert...

Page 214: ...ected connection at 4800 bps 25 CONNECT 9600 REL Error corrected connection at 9600 bps 26 CONNECT 12000 REL Error corrected connection at 12 000 bps 27 CONNECT 14400 REL Error corrected connection at...

Page 215: ...000 bps 62 CONNECT 115200 Connection at 115 200 bps 63 CONNECT 230400 Connection at 230 400 bps 70 CONNECT 76800 REL Error corrected connection at 76 800 bps 71 CONNECT 96000 REL Error corrected conne...

Page 216: ...101 65 DLE 16 10 P 59 3B f 102 66 DC1 17 11 Q 60 3C g 103 67 DC2 18 12 R 61 3D h 104 68 DC3 19 13 S 62 3E i 105 69 DC4 20 14 T 63 3F j 106 6A NAK 21 15 U 64 40 k 107 6B SYN 22 16 V A 65 41 l 108 6C ET...

Page 217: ...hronous mode or local command state Clear To Send CTS Pin 5 This signal indicates to the computer the modem is ready to begin receiving data from it When RTS CTS flow control is enabled the CTS signal...

Page 218: ...mode is selected This signal is used by your computer to synchronize incoming data The receive data clock is always derived from the receive carrier signal Data Terminal Ready DTR Pin 20 This signal i...

Page 219: ...Ready 108 CD DTR 20 HSKo 1 Ring Indicator 125 CE RI 9 N A 9 Standard RS 232 Examples GND TxD RxD RTS CTS DSR GND DCD DTR 1 2 3 4 5 6 7 8 20 1 2 3 4 5 6 7 8 20 DTE DTE GND TxD RxD RTS CTS DSR GND DCD...

Page 220: ...rican National Standards Institute primary standards development body in the USA ASCII American Standard Code for Information Interchange Pronounced as kee A code by which alphanumeric punctuation and...

Page 221: ...ond For example a V22bis 2400 bps modem uses a 600 baud by 4 bit encoding scheme Baudot Code Code for transmitting data using five bits to represent a single character BBS An acronym for Bulletin Boar...

Page 222: ...al An analog signal of known specifications such as level and frequency which is modulated by another signal containing information to be transmitted This is the high pitched sound you can hear when y...

Page 223: ...A conferencing systems have been established to allow large numbers of individuals to simultaneously discuss a wide range of specialized topics and interests Connector A physical devices such as a plu...

Page 224: ...Any type of information such as numbers letters and symbols that can be processed by a computer Database A source or collection of information In the context of communications a dial up service from w...

Page 225: ...of DTE or DCE determines which device is responsible for generating certain control signals See also Data Communications Equipment Data Terminal Ready DTR An RS 232 control signal used to indicate th...

Page 226: ...han using index pages Distortion Undesired change in a signal s original waveform resulting from the characteristics of the transmission circuits or other external influences Downloading See Software...

Page 227: ...sages to other users of that system Some dial up services deal exclusively with providing electronic mail facilities E MAIL See Electronic Mail ENQ Control character used to enquire as to the identifi...

Page 228: ...tures or images Also the display of pictures or images on a computer s display screen Guard Band Narrow frequency band left unused between adjacent channels to minimize interference H Half Duplex Data...

Page 229: ...on that precedes the message or text portion of a block of data Hertz Hz Unit of frequency one cycle per second Horizontal Redundancy Checking HRC Technique in which redundant information is included...

Page 230: ...ing I O Input Output The transfer of information into and out of a computer ISO International Standards Organization J Jack A socket used for telephone line or other electrical connections K Kermit Ke...

Page 231: ...ock in the same position Loopback Directing signals back toward the source at some point in the communications path M Mailbox A term used to describe the holding by a bulletin board videotex or electr...

Page 232: ...single channel N NAK Negative Acknowledgement This control character indicates that the last block transmitted was in error and that the receiver is expecting a re transmission Node A point of interco...

Page 233: ...been received Most bulletin boards do not use any parity checking Password A second level security device generally being a set number of characters The length and types of passwords used with bulleti...

Page 234: ...ain Software Software from which its author has relinquished copyrights This software is free of charge and may be distributed for non commercial purposes Many bulletin boards and videotex systems car...

Page 235: ...he physical and electrical interface between Data Communications Equipment and Data Terminal Equipment The most commonly used interface between modems and computers Also known as CCITT V24 RTS An acro...

Page 236: ...cters are sent from one terminal to the other in order to halt or re commence the flow of data See also Hardware Handshaking SOH Start Of Header used in synchronous transmissions indicating the start...

Page 237: ...eletext terminals consist of a specially modified television set and keypad to provide 24 lines of 40 column color text and graphics Connection is made to teletext systems by specially assigned televi...

Page 238: ...0 columns by 24 lines of color text and graphics to be displayed on the screen Information is arranged in pages each page having a unique page number Well known videotex systems include Prestel Britai...

Page 239: ...239 BOCA PRO16 Reference Guide Glossary Glossary...

Page 240: ...240 BOCA PRO16 Reference Guide...

Page 241: ...136 U 137 V 137 C 138 D 139 E 139 F 140 H 141 K 142 L 142 Ln 143 M 143 P 144 Q 144 R 145 S 146 T 146 U 147 W 148 B 112 C 110 D 111 F 113 F 112 H 114 K 115 L 116 M 117 N 119 P 119 R 120 S 120 T 121 Vn...

Page 242: ...e Modem T5 23 Dial Modifiers 13 88 93 Dialing 12 Dialing in Dumb Mode 63 Dialing with a Telephone Handset Dumb Mode 63 Dumb Mode Operation 61 68 E Encryption 42 43 Entering a Security Password 36 Erro...

Page 243: ...onnect Reason for Previous Call 193 76 77 194 8 Pause Dial Modifier Delay 179 80 Flow Control High Water Mark 195 81 Flow Control Low Water Mark 196 82 Failsafe Flow Control Overrun 197 9 Carrier Dete...

Page 244: ...hronous Mode 2 56 Synchronous Modes 52 Synchronous Operation 52 T Terminal Speeds 52 Terminating a Test T0 21 Test Timer 21 Testing 21 26 Troubleshooting 201 207 lines of incoming data are double spac...

Page 245: ...or editorial errors or omissions contained in this document The information in this manual is subject to change without notice Revisions to the product s in this manual may occur at any time without n...

Page 246: ...246 BOCA PRO16 Reference Guide...

Page 247: ...247 BOCA PRO16 Reference Guide...

Page 248: ...Part No 9398 Rev 1 0...

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