Auto Retrain %E, Automatic Rate Adaption %R | Black Box 3600

AT Commands

Auto Retrain %E

This option allows the modem to automatically retrain in response to poor received signal quality without reconnecting. The modem always responds to a retrain request from the remote modem.

Command	Operation

%E	Disable auto retrain

%E1	Enable auto retrain

Automatic Rate Adaption %R

Automatic rate adaption (ARA) allows the modem to automatically decrease the DCE rate when the allowable bit error rate is exceeded. If the line condition improves the modem automatically increases the rate.

Select this feature by front panel operation orAT command. Options include: disabled (factory default), low (BER= 1 in 105 ), medium (BER= 1 in 104), high (BER= 1 in 103).

The following guidelines apply to automatic rate adaption:

•Automatic rate adaption is disabled during direct mode.

•Manual rate adaption is disabled from the front panel when automatic rate adaption is enabled.

•Only one increment or decrement in the DTE rate is allowed at a time during rate adaption from the initiating modem.

•When online, initiator rate adaption occurs a maximum of every 12 to 14 seconds from the last occurrence of a rate adaption.

•After the modem drops data rate because of poor signal quality, the line must improve by approximately 2.5 dB before an increase in rate can occur.

5-30	Modem 3600

Image 86

Black Box 3600 MODEM manual Auto Retrain %E, Automatic Rate Adaption %R

Contents

3600 Trademarks $2334253/426 #$%&*+ #$%&,+ $$$ $$$$ $&% $$% $%%-% $&% % %&$ $ !+ #**# # 3! #41% #**# # 3! #41%&, +2 #4!# 3C $ 35 F + *&*A1 $ @ $A = 01BB Page $%% $ +,-*./0 1 **-*2**,3/0 Page Page Page Page #26 Page Page Page 555,5,65E##E%E% % Page #5 S7-# Chapter Introduction Shelf-Mount Units Features Data Mode Communications Software Class 1 Fax Communications Software Fax ModeSoftware Internet Browser Physical DescriptionFunctional Rear Panel 115 Vac Model Modem 3600 Card Card Version of the Modem Chapter Installation Mounting Accessories DC Power Connection Electrical InstallationAC Power Connection DTE Connection Digital Interface Signals Pin Signal Description s Pin 232D Signal Description Pin Signal Descriptions DCE Telephone Line Connection Dial Mode Pstn Connection Dial jack Dial-up Connection 115 Vac Model Leased Line Connection TELSET/LEASED Line Jack Leased Line Connection 115 Vac Model Shelf-Mount MD1000C Installation MD1000C Connections Option Selection Power-UpChapter Getting Started Dialing with a Standard Telephone Autodialing from a Terminal with the AT CommandsPlacing a Call Autodialing from Front Panel Answering a Call Ending a Call Reasons for Call Termination Reasons for Call Terminatio n Condition Reasons for Call Termination Condition Page Chapter Front Panel Operation LED Descriptions LCD Menus LCD Menu Operation LCD Menu Option Selectio n Reg LCD Menu Option Selection Main Menu Submenu Submenu Item Option Com Reg Submenu Main Menu Option Com Reg Lease line only † Dial line only Modify Change DTE Speed DTE=DCE Modify Change DTE Dial Method Async Modify Change DTE RTS/CTS Delay Password of 0000 disables front panel security Front Panel Security Front Panel Operation Operation Modes Chapter AT CommandsCommand Categories Online Command Mode Sending Commands to the ModemOffline Command Mode Creating a Command Statement AT Autobaud Guidelines for Creating Command Statements Monitor Display Command Statement BufferRepeating a Command a Backspace Key Group Commands Response CommandsNumbered Commands Response Displays Q Command OperationDigit / Word Selection Negotiation Displays W Call Progress / Connect Speed Messages Command Code Set Number Operation Number Code Application *RC Response Number Codes / Messages Code Message Meaning DTE rate 31200 bps Connect 300/V42 Connect 300/MNP5 Dial Commands Dialing D Insert Long Pause Tone Dialing TPulse Dialing P Wait for Second Dial Tone W Hook Flash Switching to Answer Mode after Dialing RRemaining in Command Mode Wait for 5 Seconds of Silence @ Autodial Number Location *AUn Switching from Voice to DataDialing a Stored Telephone Number Sn Voice Calls Autoanswer S0 AT Command Answer aManual Answer Caller ID *ID Distinctive Ring *DR Caller ID Message s Modem sends this message Terminal Interface Commands Data Carrier Detect &C Data Set Ready &S Data Terminal Ready &D Serial Port Ring Indicator Pin 22 \R Request to Send / Clear to Send &R DTE Controlled Fallback Rate Pin 23 *FB General CommandsChanging from Data Mode to Command Mode +++ Local Character Echo E Fast Disconnect H2, H3 Online Character Echo FHanging Up H, H1 Speaker Control M Speaker Volume LEprom Check Long Space Disconnect Y Asynchronous / Synchronous Mode Selection &MReturn Online O Bis Guard Tones &G Make / Break Dial Pulse Ratio &P Asymmetric Bit Rates *AS Synchronous Transmit Clock Source &XRate Selection Thresholds *TH Modulation *MM Maximum DCE Speed %B Minimum DCE Speed %L Auto Retrain %E Automatic Rate Adaption %R Manual Rate Adaption *RR Product Revision Level %V Talk / Data *DA Online Quick Reference $HProduct Serial Number $V Fast Train *FT Private Line Operation Disable AT Command Set *NTWire Operation Dial Line Transmit Level *TDn Wire Leased Line Operation Wire Dial-up Operation Dial Backup Manual Dial Backup *LD Dial Backup *DBReturn to Leased Line from Dial Backup *LB Dial / Leased Line &L Active Profile Configuration CommandsConfiguration Profiles Stored Profile Storing a Configuration &W Powerup Option Set &Y Reset to Stored Configuration Z Load Factory Options &Fn View Configuration Profiles/Received Signal Options &V Storing a Telephone Command Line &Zx=n, *CNx,n, *ND Retaining / Restoring Options *RO Remote ConfigurationSoft Download Password %P1, $Y Remote Configuration Security Remote Security Code %P= Entering Remote Configuration %T=, &T Enabling/Disabling Remote Configuration *RA Remote Configuration DTE Speed *RB Remote Configuration Format *RF Remote Configuration Saving or Discarding Options *RQ Page Chapter Protocols Ccitt V.42 bis Error Control ProtocolReliable Mode Constant Speed Interface Auto-Reliable ModeNormal Mode Data Compression Flow Control Direct ModeProtocol Commands Disconnect Buffer Delay %D Optional Detection Phase \M Serial Port DTE Constant Speed \J Operating Mode \N Auto-Reliable Fallback Character %An Serial Port Flow Control \Q XON/XOFF Pass Through \X Data Link Flow Control \G Break Control \Kn Inactivity Timer \T Set Auto-Reliable Buffer \C Maximum Reliable Block Size \ATransmit Break / Set Break Length \B 42bis Data Compression %C Test Categories Chapter Test Mode OperationDiagnostic Test s Offline Online Test Commands Operation Terminating a Test in Progress &T Testing the Local Modem Local Analog Loopback &T1 Local Analog Loopback with Self Test &T8 Local Analog with Test Pattern Testing the Remote Modem Local Digital Loopback &T3 Grant/Deny RDL Request &T4, &T5 Remote Digital Loopback &T6 Remote Digital Loopback with Self Test &T7 Test Pattern %T DTE Controlled Remote Digital Loopback Pin 21 *RD DTE Controlled Local Analog Loopback Pin 18 *LA Chapter Security Autocallback Security Operating with Low Security Low Security OperationOperating without Low Security Remote Operation Local Operation Low Security CommandsPasswords LCD Indication of Security High Security Security Levels Superuser Enabling High Security $EH=pw High Security CommandsDefault Passwords Disabling High Security $D Set User Callback Number $Cn=m Setting Passwords $Pn=pw$pwSet Security Levels $Ln=m Display / Reset Illegal Access Attempt Counters $M, $Mn, $M Extended Features $WDisplay Extended Feature Status $W? Security Status $E? Factory Reset $F=pw$pwRemoving a User $Rn Display User Status $S? Remote Logon Procedure $n=pw Local Logon Command $n=pwLocal Logoff Command $$ Verify User Information $In, $IBn Security Chapter Fax Operation Fax Operation Fax Autoanswer Fax DefaultsModem Initialization Stored Fax Profile Fax Associated OptionsClass 1 Details Class 1 Commands Dial Command D Answer Command a On Hook H Off Hook H1 Service Class Indication +FCLASS?Service Class Capabilities +FCLASS=? Class 0 Operation +FCLASS=0 Values for Fax Modulatio n Modulation Speed Receive Silence +FRS=TimeFax Transmit and Receive Modes Values for Fax Modulation Speed Facsimile Transmit +FTM=ModFacsimile Receive +FRM=Mod Test Supported Range of Values +FTx=?, +FRx=? Hdlc Transmit +FTH=ModHdlc Receive +FRH=Mod Binary File Transfer Class 1 Result Code +FCERRORCommand Description Fax Autoanswer +FAA= Chapter Status Registers Registers Changing S-Register Values Register Operation Sn?, Sn? Changing Register Values Sn=v, Sn=v Individual Bit Command Sn . # =v Ring Count S1 Line-Feed Character S4 Escape Character S2End-of-Line Character S3 Backspace Character S5 Lost Carrier Detect Time S10 Pause Interval for Comma S8Carrier Detect Time S9 Dtmf Tone Duration S11 Bit Mapped S14 Bit Value Command DescriptionS13 S15 S17 Test Timeout S18System Tests S16 S19 Bit Mapped S21 Comman Bit Value Description S24 Bit Mapped S22Bit Mapped S23 DTR State Recognition S25 RTS/CTS Delay S26Lookback Timer S28 Bit Mapped S27 Bit Mapped S30 Bit Value CommandBit Mapped S29 S31 Bit Mapped S32 DTR / Dial Backup Number to Dial S35Remote Configuration Escape Character S41 S33 XON Character from DTE S44 Remote Configuration Guard Time S42S43 Xoff Character from DTE S45 Leased Line Transmit Level S52 Automatic Rate Adaption Threshold S53 Flow Control S54 \Q3 Enable bilateral CTS/RTS flow controlDisable modem port flow control S55 Bit Mapped S57 Inactivity Timer S58Compression Control S56 Break Control S59 101 \K5 Break option Disable auto-reliable data buffer Enable auto retrainMNP compression enabled Bit Mapped S60 Auto-Reliable Fallback Character S64 Disconnect Buffer Delay S62Maximum Transmit Block Size S63 S65-66 Link Speed Status S67 S68 DCE Independent Speed S69 10010 B18 33,600 bps \M1 Enable V.42 fast detect Operating Mode S70Operating Mode Status S71 111 \N7 Lapm or MNP or native auto Reliable Bit Mapped S72 Password Timeout S73Callback Delay S74 Callback Retry S75 Lockout Threshold S77 Callback Retry Delay S76Autocallback Timer S78 Break Length S79 Serial Port or DTE Speed S80 Minimum DCE Speed S81 00001 DisabledEnable negotiation status Negotiation Status S82 S85-S87 Enable any key abortBit Mapped S84 Modulation Type S88 Current Modulation S91 S92 S94 Bit Mapped S97 Settings S95Asymmetric Settings S96 S98- S100 Chapter Bis Autodialer Autodialer Command Strings and Parameters Software Guidelines Invalid Responses Parameters Function Bis Commands and ResponsesDial Parameters Dial Command CRN nn...n Program Number Command PRN ann...n CNX@nnnnnBPS Intermediate Call Progress ResponseDial Stored Number CRS a Sepacall progress messages EtbsysystxLSNsp Request List of Stored Numbers RLNDisregard Incoming Call DIC LSNann...nsepann...n Link Number by Address PRL ab Connect Incoming Call CICRedial Last Number CRR n Seprcall progress messages Request List of Linked Numbers RLL EtbspspstxLSLsp Modem Options Command PRO xxxyy00Request List of Version RLV LSLalsepal Modem 11-11 Save Current Settings PRK Restore Factory Settings PRP n Request List of Stored Options RLO xxx yy V.25 Autodialer Options Definition Settings Default Options Modem 11-15 Ebcdic Ascii Modem 11-17 Test Bilateral Commanded Loop Maintenance Chapter MaintenanceFuse Replacement General Calling Technical Support Appendix a Specifications Size Modem Data Rates Modulation Speed Carrier Detect Level Page Appendix B Phone Jack Descriptions Pin FunctionPage Appendix C Hardware Options Jumper Option Selection Figure C-1. Cover Removal Figure C-2. Jumper Location for Ground Option Replacing the Cover Appendix D Fault Isolation Procedure Fault Isolation Procedure Modem and Telephone Line Check Part Modem Page Appendix E Command Index and Defaults Command Reg Description Wait for 2nd dial tone S7 value Command Reg Description Restore factory configuration 1 † EBCDIC, NRZ1 Command Reg Description Command Reg Description Command Reg Description BER Command Reg Description DCE Switches modem to talk mode † Command Reg Description Command Reg Description Fax Command Description Command Description ValueModulationSpeed Command Description Low Security High Security †cannot be executed from remote configuration mode Modem Remote Configuration Commands Data bits, mark parity, 1 stop bit Default Reg Function Factory Set RO=Read only RW=Read or write Modem Default Bis Dialer Commands Synchronous Description Command Synchronous Description Command Response Messages Response Message Meaning INC Dial Line Options Tone dial Asynchronous Dial-up with V.42 bis Protocol AT&F or AT&F1Modem Options DCE rate 33600 Modulation automode Factory Option Set # Asynchronous Dial-up without V.42 bis Protocol AT&F2 Factory Option Set #3 Synchronous 4-wire Leased Line AT&F4 Modem Options DCE rate Asynchronous 4-wire Leased Line withV.42bis Protocol AT&F5 Factory Option Set #5 Factory Option Set # Synchronous 2-wire Leased Line Normal Originate AT&F7 Synchronous 2-wire Leased Line Forced Answer AT&F8 Factory Option Set #9 Synchronous V.25bis Dialer AT&F9 Appendix F Ascii and Ebcdic Characters NUL ESC ET end of transmission ACK0 DEL Hardware Options Hardware Options Hardware Options Hardware Options Appendix G Abbreviations and Acronyms Abbreviations and Acronyms PBX Xmit Appendix H Flash Upgrade What You Need Troubleshooting Service and Support Page Index Index-2V.3600 3600Index-3 Index-4V.3600 3600Index-5 Index-6V.3600 3600Index-7 Index Index-8V.3600