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Nortel Networks CTA 500dm manual DCD Operation, DTR Operation

Models: CTA 500dm

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DCD Operation

AT commands 59

DCD Operation

&Cvalue

The DCD Operation Command sets the operation of the DCD pin. The following table shows the allowable values.

Value

Use

0always on

1tracks connection (default)

2always on except temporarily after a disconnect

The DCD pin tracks the connection and asserts when the

CTA 500dm has successfully completed a physical layer connection over one of the network B-channels. It does not indicate the successful negotiation of a rate adaptation protocol.

When the value 2 is selected and a connection has been broken, DCD is turned off for the time selected in S-register S10.

All modes of operation may not apply with all selections of rate adaptation protocols.

Result Codes

OK Appears when the value is supported.

ERROR Appears when the selected value is not recognized or is not supported.

DTR Operation

The DTR Operation Command

&Dvalue

sets the operation of the DTR pin. The following table shows the allowable values.

Value

Use

0ignored by CTA 500dm (default)

1enter the Command State (normally On-line Command State from On-line Data State)

P0873832 Issue 05

CTA 500dm On Line Guide

Image 59

Nortel Networks CTA 500dm manual DCD Operation, DTR Operation

Contents

The CTA 500dm in the Digital Network CTA 500dmUsing a CTA 500dm compliant Norstar TAPI Service Provider, the Applications About this document CTA 500dm feature summarySee Installing CTA 500dm and Norstar TAPI Service Provider software First-time setupCTA 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 Conﬁguring the PC serial port Installing CTA 500dm and Norstar TAPI Service Provider software8. 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 Upgrading the CTA 500dm software Uninstalling the CTA 500dmCTA 500dm On Line Guide P0873832 Issue18 Conﬁguration Conﬁgure TAPI dialing properties Installing Norstar TAPI SPInstalling Personal Call Manager Using PCM for the ﬁrst time CTA 500dm On Line Guide 22 Installing Norstar TAPI SPP0873832 Issue Resource sharing ¥ Installing Dial-Up Server ¥ Allowing access to your PC¥ Connecting to a Windows 95 Dial-Up Server ¥ Connecting to Resources on the Dial-Up ServerAllowing access to your PC Installing Dial-Up ServerConnecting to a Windows 95 Dial-Up Server Connecting to Resources on the Dial-Up Server CTA 500dm On Line Guide Note Windows Explorer displays the new drive letter 7. Click OKCTA 500dm On Line Guide P0873832 Issue28 Resource sharing ¥ Serial Interface commands ¥ Serial Interface Control Lines commands AT commands¥ General commands ¥ S-registers commands ¥ Call Control commands ¥ TCM Ports Protocol Selection commandsProﬁle Proﬁle commands summaryLoad Stored Proﬁle on Start-up Load Stored ProﬁleWrite Active Proﬁle to Memory StateState commands summary Enter Download State Return to On-line Data StateEscape Sequence General commands summaryGeneral turn echo on default 36 AT commandsCommand set echo commandRequest Identiﬁcation Set Local Echo View ParametersDisplay Saved Dial String Save Dial StringCTA 500dm responsesÓ on page Verbose ControlResult Code Suppression Control Call Monitoring Result Code Selection S-register commands summaryS-registers Query S-Register Set 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 Control Hook CommandOutgoing Call Control commands summary Outgoing Call Bearer Service ControlChannel Speed Control Incoming Call Controlmessages. See ÒBearer CapabilitiesÓ on page 81 for more information Incoming Call Control commands summaryIncoming Voice Bearer Call Rate Audio Bearer Call Answer Control Speech Bearer Call Answer ControlRinging Indications Data Bearer Call Answer ControlRate 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 Data Bits Set ParitySerial Interface Control Lines Set Stop Bitssets the method of ßow control on the interface between the Serial Interface Control Lines commands summaryFlow Control The Flow Control CommandOK Appears when the value is supported DTR Operation DCD OperationCTS Operation RI Operation Calling Line IDDSR Operation Calling Line ID Query Calling Line ID commands summaryCalling Line ID Delivery Control Result CodesCaller ID Security select CLID security mode Caller ID security commands summaryCaller ID Security Mode Selection Add NumberSee ÒView ParametersÓ on page 38 for more information Delete NumberClear List View ListSummary of AT commands AT commands default 68 AT commandsCommand data bearer serviceAT commands Description 70 AT commandsCommand P0873832 IssueLED problem? TroubleshootingPower problem? ¥ See ÒSet Local EchoÓ on page 38 for more information AT command problem?Data call problem? ¥ Check that you are subscribing to an MP capable service Appendix Canadian & US Safety Installation Instructions Please Read Carefully1. Read and understand all instructions Important Safety Instructions15. Save these instructions CANADIAN AND US REGULATIONSFor 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 ¥ Point-to-Point Protocol ¥ Multilink PPP Rate adaptation protocol speciﬁcationsBearer Capabilities CTA 500dm LED Initialization strings Numeric CTA 500dm responsesDB-25 connection DB-25 and DB-9 signal summaryAcronyms used in this document LEDÑLight Emitting Diode