Answering an X.75 call | ZyXEL Communications omni series specs

Answering an X.75 call

There is no need to configure the ISDN mode to the protocol of an incoming call. The omni will be able to determine the correct protocol to use by examining the data coming in from the remote site if the device is set to auto-answer or once an answering command is issued.

One exception to this is when the ISDN data call is carried through Speech bearer. In this case, you would need to make an MSN entry for the phone number from which you are expecting the Data-over- Speech-bearer call. Use AT&ZI0=n. Refer to the section entitled “Data over Speech Channel” in Chapter 5 for details.

To allow the TA to answer the incoming call, you need to set S0 to a value greater than 0 (ie. ATS0=1). The TA will answer the call and use asynchronous to synchronous conversions to and from the DTE. If S0 is not set (S0=0), the DCE will report “RING” to your terminal. External models will also make an audible ring notification.

Making an X.75 Call

CAPI 1.1a specifies X.75 with T.70 NL as its default.

CAPI 2.0 specifies X.75 with transparent layer 3 as its default.

The default data protocol of the TA is ATB20 (V.120). X.75 protocols can be chosen using the following AT commands:

∙ATB00 - X.75 with transparent layer 3.

∙ATB01 - X.75 with T.70 NL.

The ATB0x commands not only specify the outgoing protocol, but also set the default layer 3 for an incoming X.75 call without layer 3 information. It is important for both ends of an X.75 connection to execute the same pre-assigned layer 3 protocol, as it reduces the chance that the TA will make the wrong protocol selection.

66 X.75 ISDN Communications

Image 78

ZyXEL Communications omni series user manual Answering an X.75 call, Making an X.75 Call

Contents

ZyXEL ZyXEL Limited Warranty FCC Part 15 Information Copyright 1997 by ZyXELAcknowledgments Page Contacting ZyXEL ∙ E-mailPage Contents Outgoing Calls Understanding AT CommandsInstalling the Windows 95 Driver INF file Incoming Calls Error Correction and Data Compression with Configuring Windows 95 Dial-Up Networking Capi InstallationIntroduction Feature list Placing outgoing calls Call Control for DSS1 Answering an X.75 call Making an X.75 CallInvoking V.42bis Data Compression Call Control for 1TR6 Old German Isdn Placing a Call Diagnostics 100Resetting The omni 103 Using The Embedded Protocol Analyzer Upgrading with Flash Eprom AT Command Descriptions 109 Viewing and Setting S-Registers 125Register Descriptions 127 Introduction Key Features of the omni Key to Model DifferentiationSpeed and Compatibility Intelligent Features Technical Specifications Physical Characteristics Unpacking Your omniInterface Option How to Become a Registered Owner Introduction Installing omni External Models LED IndicatorsFront Panel Page Front Panel Switch Back Panel Connecting to the Power Supply Connecting to Your Computer Connecting the omni.net to Your Computer Connecting to Your Isdn Line Interface Model Power On and Self Diagnostics Interface Installing omni External Models Installing omni Internal Models Selecting the Baud Rate Multiplier Connecting the TA to your PC Plug and Play Press Y to continue Following message will appear Connecting to Your Isdn Line Interface Model Omni.net Internal Card Installation S/T interface Configuring your TA using a Terminal program Configuring Your Isdn Line and NetworkConfiguring Your TA Type A\setup.exe and press Enter TA should respond Type Page Configuring Your Isdn Line and Network Understanding AT Commands Isdn Communication Basics Supported AT command types Quick Tips when issuing AT commandsType of AT Command Example Outgoing Calls Dialing out using Isdn modeCommand Description ATV0 Dialing out for Analog Adapter Port 1 omni.net Internal Dialing out for Analog Adapter Port 1 omni.netDialing out for Analog Adapter Port 2 omni.net Incoming Calls Manually switching communication modes non-dataAT Command Dial string it will map to Placing the Call Digital Data Determining the Packet Length Answering a Call using MSN AT&ZIn=s where ‘s’ is the MSN Data over Speech Channel Ambiguity resolution switch for voice calls omni.netCommand Function Best-effort call answering non-data Multi auto-answering of data calls Setup for Windows 95 and NT Installing the Windows 95 Driver INF filePage Page Configuring Windows 95 Dial-Up Networking Page Page Click on TCP/IP Settings IPX/SPX Compatible Capi Installation Page Point-to-Point Protocol PPP Introduction Feature list Async to Sync Conversion external Compression Control Protocol CCP Multilink PPP Bandwidth On Demand BOD BACP/BAP Point-to-Point Protocol PPP 110 and Synchronous Mode Communications Answering a V.110 call AT Command Description Making V.110 CallsSynchronous Connections external CIC 25bis Command SetCommand Messages DIC Indicator Messages DTR Drop-Dialing Operation AT*D0 56 V.110 and Synchronous Mode Communications 120 Isdn Communications Placing outgoing calls Configuring the V.120 mode Dialing in V.120 mode Answering incoming calls Speeds of 128Kbps Identifying your line provisioningMaking a Bundled Call with Dialing pre-stored phone numbers Error Correction and Data Compression with Selecting V.120 for European Isdn DSS1 Selecting V.120 for Germany National Isdn 1TR6Bundle Connection with V.42bis Data Compression Page 10 X.75 Isdn Communications Answering an X.75 call Making an X.75 Call ATDIphonenumber1+phonenumber2 Invoking V.42bis Data Compression Bundle Connection with V.42bis Data Compression 70 X.75 Isdn Communications Handling Analog Calls non-data AT&V6AT&V7 European switch specific Placing a Call from the Analog Adapter Accepting an Incoming Call Scenarios of an Incoming Voice Call Outcome AT Commands Description Flash key Feature Phone omni.netCommands Description InterCom Call Waiting Placing a second callReceiving a second call Call Transfer Call BrokerCall Reject Three-way Conference Call HFlash è H#3 Control of Outgoing Service Indicator Advanced Isdn Call ControlCall Control for DSS1 S108+n= Function S80 bit ‘n’ as followsS108.n= Function Control of Isdn Phone Number and Sub-address = YnNnown-number/Znown-Subaddress Call Control for 1TR6 Old German Isdn Control of Endgerä Teauswahlziffer EAZ ModemG3 Fax Command Function Answering a Call Answering a Call for DSS1 Answering a Call for 1TR6 Best-effort Call Answering Ambiguity Resolution Switch for Voice Calls non-data Multi-Auto-Answering of Data CallsData Call Indication Disable inbound call connection Placing a call for DSS1 Point-to-Point ConfigurationPlacing a Call ATDxYnNncalledpartynumber/Zncalled-party- subaddress Placing a call for 1TR6 Leased Line Isdn ATDB3 ATDB1ATDB2 ATAB1 Security Functions Security Types and Levels Level 3 security Level 1 securityLevel 2 security Level Setting and Modifying Passwords Non-password Auto Call Back Function Security Functions Upgrading Your omni Upgrading with Flash Eprom Kernel Mode Test DiagnosticsDiagnostics Test Description Power-on Self-test Isdn Loopback test AT&T9Loopback with Self-test AT&T10 Diagnostic Command Atcg B1/B2 Loopback with Self-test AT&T11 Resetting The omni Using The Embedded Protocol Analyzer Capturing the Protocol Data CB0 CD0CD1 CB1 ATC$ Key Function Description Diagnostics Multiplex mode AT Command Set ReferenceSimplex mode Operation Modes of the DTE Interface AT Command Descriptions Basic AT Command Set Command Options Function & Description All the Following Commands Require a AT Prefix BP0 BP1CE0 CL? CE1CH? CP0 Command Options Function & Description DB3 DB1DB2 DN? ATI USA SPID1 IsdnSPID0 SPID? Description of ATI3 Output UPXOutput Parameter Output Value Description Extended AT& Command Set Isdn Command Options Function & Description Command Options Function & Description Extended AT* Command Set Command Options Function & Description AT Command Set Reference Viewing and Setting S-Registers Status Registers and Result CodesViewing S-registers Setting S-registers Operation Example-1 Example-2 Binary Dec Hex Register DescriptionsBit Binary value Decimal value Hexadecimal value Not Basic S-Registers ATSn=x Command Function & DescriptionCommand Bit Dec Hex Function and description Extended S-Registers ATSn=x Command Bit Dec Hex Function and description ATX0 ATX1ATX2 ATX3 ATX4 Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Command Bit Dec Hex Function and description Complete Command Bit Dec Hex Function and description Enable loopback 4 test DCA function enabled Command Bit Dec Hex Function and description SI= Fernsprechen analog 48000 bps PPP/MLPPP Command Bit Dec Hex Function and description PPP ATXn Result Code Option Table ATV0 ATV1 Connect Result Code Chart Symbol Reference Result Code Field DescriptionsField Name Possible Values Connect Strings for Error Corrected Connections Status Registers and Result Codes Phone Jack Pinout Assignments Not Connected Phone Jack Pinout Assignments Pin Signal/Pin Number Description Direction NameSerial Port Interface DCE TXD RXD RTS CTS DSR DTEMAC CD DCD DTR Index Index Bundled Index