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Cisco − Dialup Technology: Overviews and Explanations

This information from the Internetwork Troubleshooting Guide was first posted on CCO here. As a service to our customers, selected chapters have been updated with the most current and accurate information. The complete update to the Internetwork Troubleshooting Guide will soon be available in print and online. | Cisco - Dialup Technology Overviews and Explanations Cisco - Dialup Technology Overviews and Explanations Table of Contents Dialup Technology Overviews and Explanations.1 Objectives.1 Modem Operations.2 ISDN Operations.2 Dialer Operations.2 PPP Operations .2 Modem Operations.2 Using the Modem Autoconfigure Command.3 Establishing a Reverse Telnet Session to a Modem .3 Using Rotary Groups.5 Interpreting Show Line Output .5 Gathering Modem Performance Information.9 ISDN Operations.14 ISDN. Components.16 Interpreting Show ISDN Status Output.19 Dial on Demand Routing Dialer Interface Operations.22 Triggering a Dial.22 Dialer Maps.30 Dialer Profiles.32 PPP Operations.34 Phases of PPP Negotiation.35 Alternate PPP Methodologies.37 Annotated Example of PPP Negotiation.44 Before Calling the Cisco Systems TAC Team.47 Related Information.48 i Dialup Technology Overviews and Explanations This information from the Internetwork Troubleshooting Guide was first posted on CCO here. As a service to our customers selected chapters have been updated with the most current and accurate information. The complete update to the Internetwork Troubleshooting Guide will soon be available in print and online. Objectives Modem Operations ISDN Operations Dialer Operations PPP Operations Modem Operations Using the Modem Autoconfigure Command Establishing a Reverse Telnet Session to a Modem Using Rotary Groups Interpreting Show Line Output Gathering Modem Performance Information ISDN Operations ISDN Components ISDN Services Interpreting Show ISDN Status Output Dial on Demand Routing Dialer Interface Operations Triggering a Dial Dialer Maps PPP Operations Dialer Profiles Phases of PPP Negotiation Alternate PPP Methodologies Annotated Example of PPP Negotiation Before Calling the Cisco Systems TAC Team Related Information Back to main index Objectives This chapter introduces and explains some of the technologies used in dialup networks. You will find configuration tips and interpretations of some of