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Nortel Networks CTA 500dm manual ¥ Check that you are subscribing to an MP capable service

Models: CTA 500dm

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74 Troubleshooting

properties. Ensure ÒUse country and area codeÓ is deselected if using MP with two dial out numbers.

The PC receives bad data after a data call connection.

¥Make sure that the CTA 500dm and the remote device are set to the same rate adaptation protocol. See ÒRate adaptation protocol speciÞcationsÓ on page 80 for more information.

¥The remote device may be conÞgured for synchronous transmission. The CTA 500dm does not support synchronous operation.

The CTA 500dm loses data after a data call connection.

¥Make sure that the CTA 500dm and PC ßow control methods match. SeeÒFlow ControlÓ on page 57 for more information.

The CTA 500dm hangs up during a data call.

¥Check the setting of the DTR pin. See ÒDTR OperationÓ on page 59 for more information.

Data calls are established but Internal applications time out.

¥Check that the settings under TCP/IP properties match those of your ISP.

Data calls are made using MP and the connected pop-up says connected@128,000 bit/s but only one channel is active.

¥Only one channel may be available at the destination (for instance if the ISP is busy).

¥Check that you are subscribing to an MP capable service.

¥Only one channel is available in the outgoing line pool.

¥You are active on a voice call. If the voice call ends, a 128 kbit/s session will be established.

CTA 500dm On Line Guide

P0873832 Issue 05

Image 74

Nortel Networks CTA 500dm manual ¥ Check that you are subscribing to an MP capable service

Contents

CTA 500dm The CTA 500dm in the Digital NetworkUsing a CTA 500dm compliant Norstar TAPI Service Provider, the Applications CTA 500dm feature summary About this documentFirst-time setup See Installing CTA 500dm and Norstar TAPI Service Provider softwareCTA 500 dm On Line Guide 6 First-time setupP0873832 Issue Installation and setup Wall mounting the CTA 500dm Modular ICS Setting up the ICSCompact ICS Setting up the PC ¥ ConÞguring the PC serial port ¥ Installing CTA 500dm and Norstar TAPI Service Provider softwareConﬁguration Installing CTA 500dm and Norstar TAPI Service Provider software Conﬁguring the PC serial port8. Click OK Conﬁguring the CTA 500dm if not conﬁgured during installation Conﬁgure CTA 500dm to access PP/MP data calls Adding multiple CTA 500dm conﬁgurations Uninstalling the CTA 500dm Upgrading the CTA 500dm softwareCTA 500dm On Line Guide P0873832 Issue18 Conﬁguration Installing Norstar TAPI SP Conﬁgure TAPI dialing propertiesInstalling Personal Call Manager Using PCM for the ﬁrst time CTA 500dm On Line Guide 22 Installing Norstar TAPI SPP0873832 Issue ¥ Connecting to Resources on the Dial-Up Server ¥ Installing Dial-Up Server ¥ Allowing access to your PC¥ Connecting to a Windows 95 Dial-Up Server Resource sharingInstalling Dial-Up Server Allowing access to your PCConnecting to a Windows 95 Dial-Up Server Connecting to Resources on the Dial-Up Server Note Windows Explorer displays the new drive letter 7. Click OK CTA 500dm On Line GuideCTA 500dm On Line Guide P0873832 Issue28 Resource sharing ¥ TCM Ports Protocol Selection commands AT commands¥ General commands ¥ S-registers commands ¥ Call Control commands ¥ Serial Interface commands ¥ Serial Interface Control Lines commandsProﬁle commands summary ProﬁleLoad Stored Proﬁle Load Stored Proﬁle on Start-upState Write Active Proﬁle to MemoryState commands summary Return to On-line Data State Enter Download StateEscape Sequence General commands summaryGeneral set echo command 36 AT commandsCommand turn echo on defaultRequest Identiﬁcation View Parameters Set Local EchoSave Dial String Display Saved Dial StringCTA 500dm responsesÓ on page Verbose ControlResult Code Suppression Control Call Monitoring Result Code Selection S-register commands summaryS-registers Set S-Register Query S-RegisterS-register set Call Control Call Control commands summaryDial Command Press any key before the call is completed to abort the Dial Command Answer Command Outgoing Call Bearer Service Control Hook CommandOutgoing Call Control commands summary Outgoing Call ControlIncoming Call Control Channel Speed Controlmessages. See ÒBearer CapabilitiesÓ on page 81 for more information Incoming Call Control commands summaryIncoming Voice Bearer Call Rate Speech Bearer Call Answer Control Audio Bearer Call Answer ControlData Bearer Call Answer Control Ringing IndicationsRate Adaptation Protocol Selection TCM Port Protocol Selection CommandTCM Ports Protocol Selection Rate Multiplier MP command summaryCTI MUX Mode Serial Interface Rate Serial Interface commands summarySerial Interface Set Parity Set Data BitsSet Stop Bits Serial Interface Control LinesThe Flow Control Command Serial Interface Control Lines commands summaryFlow Control sets the method of ßow control on the interface between theOK Appears when the value is supported DCD Operation DTR OperationCTS Operation RI Operation Calling Line IDDSR Operation Result Codes Calling Line ID commands summaryCalling Line ID Delivery Control Calling Line ID QueryCaller ID Security Add Number Caller ID security commands summaryCaller ID Security Mode Selection select CLID security modeView List Delete NumberClear List See ÒView ParametersÓ on page 38 for more informationSummary of AT commands AT commands data bearer service 68 AT commandsCommand defaultAT commands P0873832 Issue 70 AT commandsCommand DescriptionLED problem? TroubleshootingPower problem? AT command problem? ¥ See ÒSet Local EchoÓ on page 38 for more informationData call problem? ¥ Check that you are subscribing to an MP capable service Canadian & US Safety Installation Instructions Please Read Carefully AppendixImportant Safety Instructions 1. Read and understand all instructionsCANADIAN AND US REGULATIONS 15. Save these instructionsFor Class B Host equipment EMI/EMCFor Class A Host equipment Address for warranty and repairs in Canada WARRANTY INFORMATIONAddress for warranty and repairs in the United States Rate adaptation protocol speciﬁcations ¥ Point-to-Point Protocol ¥ Multilink PPPBearer Capabilities CTA 500dm LED Numeric CTA 500dm responses Initialization stringsDB-25 and DB-9 signal summary DB-25 connectionAcronyms used in this document LEDÑLight Emitting Diode