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ZyXEL Communications omni.net LCD+M Point-to-PointProtocol (PPP), Chapter, Introduction to PPP

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Technical Reference for ZyXEL omni.net series

Chapter 7

Point-to-Point Protocol (PPP)

Introduction to PPP

Point-To-Point Protocol (PPP) is designed for simple links, which transport packets between two peers. These links provide full-duplex simultaneous bi-directional operation, and are assumed to deliver packets in order. PPP is intended to provide a common solution for easy connection for a wide variety of hosts, bridges and routers.

In the process of configuring, maintaining and terminating the point-to-point link, PPP goes through several distinct phases, as specified in the following simplified state diagram:

Up	Opened
Idle	Establish

FailFail

Down	Closing
	Terminate

Authentication

Success/None

Network

Point-to-Point Link Pathway

Figure 7. Point-to-Point Link Pathway

7-1

Contents

Technical Reference for ZyXEL omni.net series ISDN Terminal Adapters omni.net LCD omni.net LCD +M omni.net Plus omni.net D The Declarations of CE Marking Limited Warranty ZyXEL omni.net series ISDN Terminal Adapters Conditions of ZyXEL Limited Warranty: Limitations and exclusions of this warranty: Limitations of liability: Page Technical Reference for ZyXEL omni.net series Contents PART I INTRODUCTION CHAPTER INTRODUCTION USING ZYXEL® ISDN CONFIGURATION MANAGER PART II ISDN FUNCTION ISDN COMMUNICATION BASICS PART III VOICE FEATURES SUPPLEMENTARY SERVICE (FOR ZYXEL OMNI.NET LCD/LCD+M/PLUS) FEATURE PHONE OPERATION (FOR OMNI.NET LCD/LCD+M/PLUS) PART IV DATA FUNCTION POINT-TO-POINTPROTOCOL (PPP) V.110, V.120, X.75 AND SYNCHRONOUS MODE ISDN COMMUNICATIONS PART V FAX/MODEM FUNCTION INTERNAL FAX/MODEM FUNCTION (FOR ZYXEL OMNI.NET LCD+M ONLY) PART VI DIAGNOSTICS & FIRMWARE UPDATE DIAGNOSTICS FIRMWARE UPGRADE PART VII APPENDICES APPENDIX A AT COMMAND SET REFERENCE APPENDIX B STATUS REGISTERS & RESULT CODES APPENDIX C APPENDIX D SERIAL PORT INTERFACE Content of Tables Page Page Page Content of Figures Preface How to Use This Manual Other References Page Page Page Chapter Introduction Intelligent Features Specifications Key Features Summary Installing Your ZyXEL omni.net ISDN TA Step Chapter 2 Using ZyXEL® ISDN Configuration Manager ZyXEL About ZyXEL ISDN Configuration Manager Start using ZyXEL ISDN Configuration Manager Step Setp Page Configuring ISDN Parameters Chapter 3 LCD Panel Operation (for ZyXEL omni.net LCD/LCD+M) omni.net LCD LCD Panel Idle Screen Arrow Keys LCD Panel Functions LCD Panel Operation Keys LCD Panel Display Idle Screen Set Clock sub-menu Set Display Mode sub-menu Dial In Log << Dial In Log #01: TEL1 00:01:02 Fm:035783942 02-03-199809:32 Dial Out Log << Dial Out Log #01: TEL1 $102 To:5783942 Active Status B1 TEL2 Fm:035783942 B2 Idle B1 Analog Fm:5783942 B1 TEL2 To:035774848 Display Clock Update Clock Set Display Mode Dial In Log Records Stored Phone List Records Records of Outgoing Calls Page Page Page ISDN Communication Basics Page Supported AT Command Types Quick Tips when Issuing AT Commands Outgoing Calls Dialing Data Calls Dial Out Voice Calls (for ZyXEL omni.net LCD/LCD+M//Plus) Dialing Out using internal Fax/modem (for ZyXEL omni.net LCD+M) Dialing Out Using ISDN Mode Optional Speech Bearer Service Page Manually Switching Communication Mode (for ZyXEL omni.net LCD/LCD+M/Plus) Placing a Data Call Multi-AutoDial Out (MDO) for Outgoing Data Calls Incoming Calls Answering a Call Using MSN NOTE: Data Over Speech Channel (for ZyXEL omni.net LCD/LCD+M/Plus) Best-effortCall Answering (for ZyXEL omni.net Ambiguity Resolution Switch for Voice Calls (for omni.net LCD/LCD+M/Plus) Page German ZyXEL customers: Page Page Chapter 5 Supplementary Service (for ZyXEL omni.net LCD/LCD+M/Plus) Put your current call on hold and answer an incoming call Call Hold/Retrieve Switch back and forth between two callers Hang-upyour current call before answering an incoming call Disconnect the second call and switch back to the first call Three Way Conferencing for USA only Starting a conference call NOTE: Canceling the conference call (for DSS1 switch only) Dropping the last call added to the 3-wayconference call (USA only) Leaving the conference call, while the other two parties connected (USA only) Call Forwarding For DSS1 switch Reminder Ring (USA NI-1& DMS-100switch) Message Waiting (USA NI-1& DMS-100switch) Call Transfer (USA NI-1& DMS-100switch) Page Chapter 6 Feature Phone Operation (for omni.net LCD/LCD+M/Plus) Flash Key Commands InterCom Receiving a Second Call 1.Accept the call 2.Reject the call 3.Establish a 3-WayConference Call Broker Step 1. Switch to caller C Call Reject To disconnect caller C and switch back to caller B Call Transfer Three-WayConference Call Conference Call (1 local and 2 remote call) Conference Call (2 local and 1 remote call) Last Number Redial To redial the last number Quick Dial 1.To record a phone number for quick dial 2.To clear a quick dial number Page Page Page Point-to-PointProtocol (PPP) Feature List Async to Sync Conversion Authentication Conversion Compression Control Protocol (CCP) Multilink PPP Call Bumping Page Bandwidth On Demand (BOD) BACP/BAP Page Page V.110, V.120, X.75 and Synchronous Mode ISDN Communications About V.110, V.120 and X.75 ISDN Protocols Answering V.110, V.120, and X.75 Calls Placing V.110, V.120, and X.75 Outgoing Calls V.110 Outgoing Protocol V.120 Outgoing Protocol X.75 Outgoing Protocol Synchronous Connections (for omni.net LCD/LCD+M) Asynchronous commands, synchronous data (AT&M1): The omni.net LCD/LCD+M accepts Synchronous mode AT&M3*I1 Page Making V.120 and X.75 Bundled Calls Speeds of 128Kbps Identifying your Line Provisioning V.120 Bundled Call Page X.75 Bundled Call Dialing Pre-storedPhone Numbers Using V.42bis Data Compression Bundle Connection with V.42bis Data Compression Page Error Correction and Data Compression with LAPD error correction Data Compression with Selecting V.120 for European ISDN (DSS1) Security Settings Type 1 Security Type 2 Security Page Page Setting and Modifying Passwords Modifying the Supervisory Password Modifying the User Passwords Non-passwordAuto Call Back Function AT*GC0 AT*GC1 Page Page Page Chapter 9 Internal Fax/Modem Function (for ZyXEL omni.net LCD+M only) MNP Protocols Xmodem, Ymodem, and Zmodem Fax and Facsimile Modem as a fax EIA Class 1 Fax Commands Constriction of Using Internal Fax/Modem and Phone2 Dialing Out for Internal Fax/Modem Manually Switching Communication Modes Table AT&O2 ATDMs Answering a Call Using MSN Allow Internal Fax/Modem to Answer Incoming Analog Calls LCD Panel When Internal Fax/Modem Operation Control the Speaker of Internal Fax/Modem Control Data Compression Fax Operation Fax Command Sets Internal Fax/Modem AT Command Set Summary Page Page Page Page Diagnostics Power-on Self-test ISDN Loopback Test (AT&T9) Loopback with Self-Test(AT&T10) B1/B2 Loopback with Self-Test(AT&T11) The Diagnostic Command (ATCG) Resetting Your omni.net Using the Embedded Protocol Analyzer (EPA) Capturing the Protocol Data Analyzing the Captured Data Page Page Firmware Upgrade Kernel Mode Page Page Page Page Appendix A AT Command Set Reference AT Commands Description AT Commands Prefix (AT) Basic 'AT' Command Set Page Page Page Page Page Page Description of ATI3 Output Page Extended 'AT&' Command Set Page Page Page Extended 'AT*' Command Set Fax Command Modulation values Page Appendix B Status Registers & Result Codes Setting S-registers NOTE: ATS38 S-RegisterDescriptions Basic S-Registers'ATSn=x Extended S-Registers"ATSn=x Page Page Page Page Page Page Page Page Page Page Page Page Page Page 'ATXn' Result Code Option Table Page Result Code for Internal Fax/Modem (for ZyXEL omni.net LCD+M only) Page Result Code Chart Symbol Reference Result Code Field Descriptions Connect Strings for Error Corrected Connections Page Appendix C Phone Jack Pinout Assignments RJ-11POTS Port Phone 1&2 (for omni.net LCD/LCD+M/Plus) RJ-11Connector Pin Assignment Appendix D Serial Port Interface Async. Hardware Flow Control Cable Connection Index