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Nortel Networks CTA 500dm manual Rate adaptation protocol speciﬁcations

Models: CTA 500dm

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Rate adaptation protocol speciﬁcations

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Rate adaptation protocol speciﬁcations

The CTA 500dm supports two rate adaptation protocols. These protocols allow data leaving the computer to be properly carried over the network to another computer or LAN.

The CTA 500dm supports the following protocols:

¥Point-to-Point Protocol

¥Multilink PPP

Point-to-Point Protocol

PPP is used when only a single channel is desired.

When using PPP for dial-up connections, any of the standard authentication protocols (such as Password Authentication Protocol (PAP) and Challenge-Handshake Authentication Protocol (CHAP)), and any of the standard PPP compression protocols can be used. The CTA 500dm automatically uses any of these protocols, so there is no need to conÞgure the CTA 500dm.

The CTA 500dm can also accept incoming calls when set to PPP operation.

Note: PPP used by the CTA 500dm is asynchronous-to- synchronous conversion.

Multilink PPP

MP is a protocol that is used to link multiple channels that use PPP. When used with the CTA 500dm, MP allows your computer to connect to the network using 1 or 2 channels. However, the link between the CTA 500dm and your computer uses only a single channel. Because of this, the CTA 500dm has to make certain Link Assumptions about the operation of the links, and it negotiates link operation so that MP can be used.

MP can be enabled or disabled for incoming calls as well as outgoing calls. MP requires two phone numbers for outgoing calls. If the telephone numbers are the same, only one number needs to be speciÞed in the dial command. If the telephone numbers are different, the & character must be used in the dial command (see ÒDial CommandÓ on page 44 for more information).

When using MP, the only supported authentication protocol is PAP. The use of PAP is automatically detected by the CTA 500dm. If any

CTA 500dm On Line Guide

P0873832 Issue 05

Image 80

Nortel Networks CTA 500dm manual Rate adaptation protocol speciﬁcations, ¥ Point-to-Point Protocol ¥ Multilink PPP

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 ¥ Installing Dial-Up Server ¥ Allowing access to your PC ¥ Connecting to a Windows 95 Dial-Up Server¥ Connecting to Resources on the 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 AT commands ¥ General commands ¥ S-registers commands ¥ Call Control commands¥ TCM Ports Protocol Selection 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 36 AT commands Commandset echo command 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 Hook Command Outgoing Call Control commands summaryOutgoing Call Bearer Service Control 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 LinesSerial Interface Control Lines commands summary Flow ControlThe Flow Control Command 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 Calling Line ID commands summary Calling Line ID Delivery ControlResult Codes Calling Line ID QueryCaller ID Security Caller ID security commands summary Caller ID Security Mode SelectionAdd Number select CLID security modeDelete Number Clear ListView List See ÒView ParametersÓ on page 38 for more informationSummary of AT commands AT commands 68 AT commands Commanddata bearer service defaultAT commands 70 AT commands CommandP0873832 Issue 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