Call Establishment | Motorola 326X V.34, and V.32bis, V.34-SDC

326X Series Modem Troubleshooting Guide

Problem	Diagnosis/Test	Possible Solution
During installation:
Modem won’t power up	Check AC power.	Ensure AC outlet is active.
	Check modem’s power switch.	Turn on power switch.

Modem fails self test	Repeat power-up sequence.	If modem fails once again, call Motorola Customer Sup-
(front panel displays		port and report the error code.
error code)

Modem doesn’t come up	Check DIP Switch #6 on	• Ensure DIP Switch #6 is in the Off (up) position.
in ready state— “326X	modem’s rear panel.	• Power cycle the modem.
Ready” on front panel
display

While operating the 326X as a dial modem:

ACU CONFIGURA-

TION

No response to ACU	Check that TD LED on front	• If light does not come on, check that cables are prop-
command	panel lights when commands are	erly connected.
	being sent to the modem.	• Check the communications software package for
		correct communications port configuration.
		• Check that the communications software package’s
		baud rate is set to a rate that the modem’s autobaud
		feature supports.
	Check modem's configuration:	• Ensure ACU is compatible with modem's
	• DTE Rate (AT *DE)	configuration.
	• DTE Rate (AT *DE)	• Make sure the DTE is set to a valid character format
	• ACU Form	to operate the modem’s autobaud feature (see
	• Char Length	to operate the modem’s autobaud feature (see
	• Char Length	Chapter 5 for details on this feature).
	• Parity (AT *RP)	Chapter 5 for details on this feature).
	• Parity (AT *RP)	• If modem still does not respond after modifying con-
	• Result Code (ATQ)	figuration, perform a local analog loopback (LAL)
		test. (Refer to the end of this chapter for details on
		tests supported, as well as instructions for initiating
		tests.)
		• If LAL fails, contact Motorola Customer Support.

Double echo on charac- Check echo setting on data		If both echo settings are on, turn one off. (In some data
ters typed	terminal equipment and modem.	terminals, echo is sometimes referred to as half- or full-
		duplex.) If this does not solve the problem, contact
		Motorola Customer Support.
	Check the terminal setup of the
	communications software.
CALL ESTABLISHMENT
Modem won’t answer	Check the modem's
	configuration:
	• Answer (AT *AA)	Ensure that Answer is not set to Manual.
	• DTR (AT&D)	Set DTR=High (AT&D0).

Troubleshooting

Troubleshooting Guide 6-3

Image 113

Motorola 326X V.34, and V.32bis, V.34-SDC manual Call Establishment

Contents

Motorola Restricted Rights Notification for U.S. Government Users Proprietary Material Page Contents Installing the Modem Using the AT Automatic Calling Interface Appendix B. Cabling and Interface Pinouts Glossary Return Procedures Contents 326X Series Modem Family Using the Documentation Set OverviewProduct Family Model Numbers This Model Number... Denotes How to Use the Documentation Set Using the Documentation SetDocumentation Target Audience 326X V.34 Series Modem Reference Card T0009-01 326X V.34 Series Modem User’s Guide T0009 326X Series Modem Reference Guide ReferencesTrademarks Special Notices Using the Documentation Set Conventions Mise en Garde Messages spéciauxAvertissement Besondere Hinweise Advertencia Using the Documentation Set Avisos EspecialesPrecaucion Xviii Introduction Motorola Information System Group ISG Customer Information Questions about Billing Sales-Related Issues Information on Product TrainingMotorola ISG Customer Information User Documentation Comments about the Manual Xxii Customer Response Card Business Reply Mail Chapter Contents From a network management system NMS Introduction Repair Safety and Operational Notices Lightning Operating the Modem from the Front Panel 25bis ACU Selecting Programmed Option SetsAutomatic Calling Interfaces ACUs Modulation Mode Characteristics ITU-T V.34 Compliant Modulation ModeManaging a Modem Restoring Data Transmission Compatibility in V.34 Modulation Mode Synchronous Data Compression SDC FeatureAutomode/Multimode Feature Error Correction and Data Compression Remote ConfigurationSecurity Status Snapshots Adaptive Rate System Troubleshooting V.54 and V.22bis TestsCountry-Specific Information NET Compliance Modem Chapter Installing the Modem Appendix C Appendix B One User’s Guide One Reference Card Unpacking the ModemU.S.A Outside the U.S.A Choosing a Site Additional Equipment Required Rear Panel Connectors Connecting the ModemAn AC power switch Modular jacks for making Operating at V.34 DTE Rates Electrical Interfaces-EIA/TIA-232 and ITU-TS Models 3261 and 3266 Dial Line Connections Ferrite CylindersModels 3267 Modems Installing a Ferrite Cylinder on a DTE Cable Installing a Ferrite Cylinder on an Audio Cable Installing a Ferrite Cylinder on a Power Cable Installing a Ferrite Cylinder on a Power Cable Important Information About the Modulus Enclosure Important Information About the Modulus Enclosure Front Door Cabling the Modem 3265 Modem Cabling Connecting to a 9110 NMS Connecting the Modem to a Network Management System Turning on the Modem 11. Connecting Modems in a Daisy Chain Configuration Handling Error Messages After Installing the ModemAutomatic Self-Test Self-Test Messages Installing the Modem Getting Started Contents Configuring and Operating the Modem System Requirements for Software UpgradesUsing the Front Panel If You Are Unsure of Your DTE’s Data Format Name Description 326x Ready326X LEDs RC/NC Front Panel Display Setting Configuration Options from the Front Panel Navigating the Configuration Menu TreeMenu Structure Front Panel Keys Status Displays Example Accessing a Configuration OptionTalk/Data Switch Where Do I Go from Here? Using the Modem with a Network Management System NMSOperating Status Displays Option Sets/Dialing Options Using the Modem with an Async Terminal Using the AT Automatic Calling Unit ACU Selection, refer to Using the Modem with a PC and Async Communications Software 25bis ACU for Sync or Async Applications Other Call Establishment MethodsNetView LPDA-2 ACU for Sync Applications NetView LPDA-2 ACU for synchronous applications External Auto-Call Units Sync Dialing from an IBM ASPage Option Set 4-Synchronous Leased Line Applications with Configuring the Modem Communications Software Package Operating Notes Configuring the Modem for Use with Communications SoftwareSelect the Modem’s Preconfigured Option Set General Notes Operating Notes Set Modem Flow=Off Direct Operating Mode Preparing for Operation Reinitializing Memory Using the AT&F CommandIf the Communications Software and Modem Do Not Operate Reinitializing Memory from the Front Panel What is an Option Set? Configuration Option SetsOption Set Summary-326X V.32bis and V.34 Modems Option Set Summary-326X FAST-SDC Modem Option Set Descriptions-326X V.32bis and V.34 Modems Option Set 1-Async Calls to Central Site Using the AT ACU Option Set 2-Sync Dial A/B Restoral Option Set Descriptions-326X FAST-SDC Modems Option Set 3-Sync Dial Only To create a customized option set Configuring an Option Set Do not turn off modem power until Save COMPLETED! appears Option Set Defaults-326X V.32bis and 326X V.34 Modems Option Set DefaultsSave Changes=n Option Set Parameter 3260/62/65/67 3261/63/66/68 Terminal OPT’S XON/XOFF Option Option Set 3261/63/66/68 Option Set Defaults-326X-SDC V.34 ModemOption Set DTE Rate Auto 56.0 U.S. A., Canada Other countries Flow Ext Cntrl Pin Inactivity S30 For This Type of Application Select 326X V.32bis and 326XFAST Modem Application Examples Changing Default Configuration Settings Option Set 1-Async Calls to Central Site Using AT ACU Option Set 3-Sync Calls to Central Site, V.25bis ACU Option Set 2-Sync Answering Central Site Without ACU Synchronous Dialing from an IBM AS Mode=Originate in the other modem 326XFAST-SDC Modem Application Examples SDC Pre-Operation Notes Configuring the Modem for SDC OperationOperational Requirements Optimizing Network Performance SDC Option Set 1-Async Calls to Central Site Using AT ACU Ensuring Optimum Network Performance in SDC ModeSDC Sample Applications SDC Option Set 2-Sync Dial A/B Restoral To 33.6 kbps X-SDC Dial-Only Application-Option Set SDC Option Set 3-Sync Dial Only Bandwidth On Demand-Option Set Bandwidth On Demand Select SDC Option Set 4 for this application Point-to-Point Leased Line Application with Dial Restoral Operation Remote Access ResetWhen Remote Access Reset Is Disabled Configuring the Modem Using the AT Automatic Calling Interface Industry-Standard AT Command Set-AT and AT Using AT Commands What is the Attention AT Command Set?Entering AT Command Lines To enter a single AT command line AT Command String Examples To enter multiple AT commands on a single command lineFor Further Detail on AT Commands Interpreting AT Command Strings Escape Sequence-+++ Autobaud FeatureValid Autobauding Character Formats Start Bit Data Bits Parity Stop Bits To use the escape sequence with guard time Non-Configuration AT Commands ATD, Dial Re-Execute Last CommandATA, Manual Answer ATI, Display Software Information ATO, Leave Command ModeATH, Hang Up AT*RD, Redial Last Number RegistersDisplaying and Changing S-Register Values Display S-Register Value ATSn? Display S-Register Value AT? Register DescriptionsChange S-Register Value ATSx=n Change S-Register Value AT=x Register 2-Escape Code Character Register 1-Ring CountRegister 3-Carriage Return Character Register 4-Line Feed Character Register 7-Wait for Data Carrier Register 5-Backspace CharacterRegister 6-Wait for Dial Tone Register 10-Carrier Loss Hang Up Delay Register 8-Pause Time for Pause Delay Dial Modifiers Register 12-Escape Code Guard Time Register 18-Test TimerRegister 11-DTMF Tone Duration Register 30-DTE Inactivity Disconnect Register 25-Delay Before Looking for DTRRegister 26-RTS/CTS Delay Register 45-Access Security Tone Duration Register 38-Disconnect Buffer DelayRegister 46-Access Security Lead Digit Delay Timeout Register 96-Signalling System #5 Register 97-Break Signal Duration Register 99-V.32 Training Time Register 98-AC Detect Troubleshooting Guide Troubleshooting Steps TroubleshootingAssumptions First Step Call Establishment Max Rate AT*MX Min Rate AT*MN Data Mode Flow control Call Termina Tion Fast Call=Off AT*FC0 in it Modem won’t connect Test Description Command 326X Series Modem Diagnostic Tests To initiate a test from the modem’s front panel Synchronous Data Compression SDC TestingPage Appendix a Configuration Quick Reference Configuration options and functions Configuration Quick-Reference-Menu TreesFor More Detail Audience and Assumptions Figure A-1. The 326X Series Modem Menu Structure Part 1 Figure A-2. The 326X Series Modem Menu Structure Part 2 Figure A-3. The 326X Series Modem Menu Structure Part 3 Figure A-4. The 326X Series Modem Menu Structure Part 4 Async Echo Dial FromStored #=n Speaker VolumeDial RsltCode Select Options Longspace Guard Tone Reinitialize MemoryGuard Tone Display Modem ID Line TelcoAT Form Pulse Cycle CTS Control RTS signal from the DTE, set the modem RTS= NormalMode=Direct DSR Control Clock Power UpEnter Phone # Answer Ans Rest Asym Rate Blind Dial Auto TypeBreak Mode Default Dialing See the AT&Z command descriptionBuffer Delay =Off Off setting disables the Delay option Dial Wait Data CompressionDial Wait DTE Rate To D RTS/CTS DelayData Form DTR Delay Pause DelayAuto Redial Stored# Flow Control Flow DTE Ct Hold DL LineLine Compen To L LAL Busy Out Pstn SignalingLink Phone #’s Low Speed Min Rate Modem FlowMod AT Message AT MsgMax Rate Maximum Rate Netwrk Comp BuffersView Phone # Ext Cntrl Overspeed PasswordSet Protection Unlock Pass Change Pass RestoreWord Rmt Acc Parity ParityRTS Control Retrain Inactivity Speed Conver Throughput Minimization Delay RTS/DCD Remote SignalingRemRTS/DCD TpDlyMin Call Timeout Call TimeoutTone Length Tone Length Access security password from the remote modem Callback FeatureDisplays only when selected by an NMS This command defines dial command limitations Rem Num Rqrd Remote Number Required Password VerificationSim Ring Simulated Ringback Table A-2 Front Panel Configuration Options V25 Resp Sync IdleLPDA2 Addr LPDA2 Det OverrideMode Group PWNC Address NC PortRate Front Panel Option Description Performing Numeric Entry Table A-3 Register Cross-Reference Register/AT Command Cross-ReferenceRegister AT Command Front Panel Option Modifier Function Description Dial Modifiers for Special Dialing RequirementsTable A-4 Dial Modifiers Table A-4 Dial Modifiers Table A-5 Result Codes Result Codes Connect Configuration Quick Reference A-43 Switch Number Setting Function Configuring the Modem’s Dual In-line Package DIP SwitchesTable A-6 Rear Panel Switches Configuration Quick Reference A-45 Page Cabling and Interface Pinouts Appendix B Pin 232-D ITU Signal Definition 326X/326X-SDC cabling requirements and diagnosticsEIA/TIA 232-D Modem to Computer Interface Table B-1 Modem/Computer Interface Connections Models 3261/3263/3266/3268 only. Signal passed from modem to Figure B-1 XFAST-SDC Series Modem with ITU V.35 Interface ITU Recommendation V.35 Modem-to-Computer Interface Table B-2 ITU V.35 Modem/Computer Interface Connections Pin Signal DefinitionITU Rate V.35 Modem-to-Computer Interface Pinouts Differences, EIA/TIA 232-D and ITU Rate V.35 Interfaces Dial LINE, Lease Private LINE, Phone Connector Pinouts NC Network Control Port Pinouts Table B-3 Network Control Port Connector PinoutsCabling Cable Considerations Table B-4 Maximum Cable Capacitance per Data Rate Motorola Product Up to Description Code Kbps ft Kpbs ft Table B-5 Motorola DB-25 Low Capacitance Cables for Table B-6 Vendor Wire for DTE Cable Diagnostics Cabling and Interface Pinouts B-11 Page Appendix C Canada Country Support Restricted Features Summary Installation NotesModels 3265/3266 All Models AT*AA1 Setting AT Command Feature Australia Austria Belgium Canada Czech Republic Feature Poland Denmark Finland France Feature Germany Hong Kong Ireland Israel Feature Italy Japan Malaysia Netherlands AT*DR1 AT*DR2 AT*DR3 AT*DR4 AT*LL Feature Norway Portugal South Africa SpainAT*DD2 AT*DD3 AT*DD4 AT*DD3 Feature Sweden Switzerland United Kingdom UniversalAT*DD3 S7 AT*DD9 AT*DP AT*DR1 AT*DR2 AT*DR3 AT*LL Standalone Modem Rear Panel Views Operating Notes Modem Rear Panel Dial Only Dial Only ModemModem Rear View Leased Line, Dial Restoral Figure C-3.View a Rear Panel Layout 3265 Dial Only Modem Rear Panel-View a Modem Rear Panel-View D Modem Rear Panel-View BModem Rear Panel-View C Modem Leased Line with Dial Restoral For an Illustration of the Enclosure Card Backplane Rear Panel Interface Pinouts Wire Leased Line Interface Models 3260/3265Standalone Models 3260/65 and 3261/66 Interface Pinouts Dial Line Interface Models 3260/3265 Dial Line Interface Models 3261/3266 Phone Connector Interface Models 3260/3265Wire Leased Line Interface Models 3261/3266 Table C-6 Wire Leased Line Interface Models 3261/3266 Card Models 3262/67, 3263/68 Backplane Interface Pinouts Phone Connector Interface Models 3261/3266Dial Line Interface All Card Models Table C-7 Phone Line Interface Models 3261/326 Wire Leased Line Interface Models 3263/3268 Wire Leased Line Interface Models 3262/3267Table C-9 Wire Leased Line Interface Models 3262/3267 Table C-10 Wire Leased Line Interface Models 3263/3268 Austria-Forbidden Call Lists Delayed and Forbidden ListsAustralia-Delayed Call Lists Belgium-Delayed Call Lists France-Delayed and Forbidden Call Lists Finland-Delayed Call Lists Ireland-Delayed Call Lists Hong Kong-Delayed Call Lists Norway-Delayed Call Lists Netherlands-Delayed Call Lists Other Country-Specific Information Spain-Delayed Call ListsCanada DOC Registration and Requirements Canadian Emissions Statement Industry Canada Equipment Attachment Limitations Table C-13 Phone Connector Pinouts for Jack Operation Table C-12 Dial Line Connector Pinouts for Jack OperationRear Panel Pinouts Modem Telco Option AT&J Table C-14 Dial Line Connector Pinouts for Jack OperationTable C-15 Phone Connector Pinouts for Jack Operation Compliance with BS6328 Part 1 1982 Section Denmark-Blind DialingHong Kong and United Kingdom-BABT Regulations Ringer Equivalence Number REN Compliance with BABTSITS/82/01/C and BABT/SITS/ 82005S/DCompliance with BS6305 Clause 6.2, BS6320 Clause Compliance with BS6789 .11986 Clause Compliance with BABT/SITS/83/08/A Clause Compliance with Babt Sits 83/009 Section D Compliance with DTI 83/009ICompliance with BS6301 FCC Registration Installation of Telephone SocketApplication for Installation of Telephone Socket FCC Regulations Pin Voice Jack Permissive Dial Line Jack TypesPin Data Jack Programmable Jack Type Description Table C-17 Phone Connector Pinouts for Jack Operation Table C-16 Dialline Connector Pinouts for Jack OperationJack Leased Connector Pin No Function Dial Line Telco Jack Selection Table C-19 Phone Connector Pinouts for Jack Operation Table C-18 Dial Line Connector Pinouts for Jack Operation Dial and Leased Line Transmit Levels Connecting an Exclusion Key TelephoneMaking Telephone-to-Modem Connections Dial Line Transmit Level RJ4MB4 Declaring The Jack Type Using the Modulus Backplane’s Busy Out Feature Pin Pair Function A. and Canada Other UI Countries Table C-20. Backplane Pin Settings for Busy Out, ModulusTable C-21. Backplane Pin Settings for Busy Out, Modulus Modem a Modem B Country-Specific Information ACU Glossary CRC EIA ITU-TS Pstn SYN Return Procedures Expiration of Lease Equipment Return ProceduresFactory Repair Packaging Guidelines for Equipment Return Index DOC FCC Phone SDC Index-6