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DIVA T/A PC Card
Reference Guide
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Second Edition (March 1998) 206-179-02 DIVA T/A PC Card is a trademark of Eicon Technology Corporation. Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation. CompuServe is a registered trademark of CompuServe Incorporated. Hayes is a registered trademark of Hayes Microcomputer Products, Inc. Changes are periodically made to the information herein; these changes will be incorporated into new editions of the publication. Eicon Technology may make improvements and
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Table of Contents What is ISDN?...................................................................................... 4 What is EZ-ISDN/IOC? ....................................................................... 8 What is AutoSPID?............................................................................... 9 What is Non-Initializing Terminal Mode?......................................... 10 What is Multilink PPP?...................................................................... 11 What i
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What is ISDN? While you've heard of ISDN, there's a good chance you're unsure whether you need it - or even what, exactly, it is. Even though ISDN is globally available, it's so new that understanding it may require a little investigation. In simple terms, ISDN is a replacement for plain old telephone service, which was never designed to meet the needs of the information age. ISDN uses the same wiring that currently serves homes and businesses. You get ISDN service from the same companies who pr
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"Network" refers to the fact that ISDN is not simply a point-to-point solution like a leased line. ISDN networks extend from the local telephone exchange to the remote user and include all of the telecommunications and switching equipment in between. When you have ISDN, you can make connections throughout the world to other ISDN equipment. If your ISDN equipment includes analog capabilities, you can also connect to analog modems, fax machines, and telephones, even though they may be connected to
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ISDN Communication Channels In the ISDN interface, a number of communication channels are carried over a digital line. These communication channels can vary by the type of information they transmit and by the transmission speed they support. The number and type of channels used may vary. The communication channels can be of the following types: B-Channel - 64 Kbps D-Channel - 16 or 64 Kbps H-Channel - 384, 1536, or 1920 Kbps (not yet commercially available) Different combinations of these channe
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D-Channel The primary function of the D-channel is to carry common-channel signaling information to manage and control circuit-switched calls on B-channels. The D-channel can also be used for packet-switching or low-speed telemetry when it is not involved in control signaling. Message signaling takes priority over data packet-switching. The D-channel functions at 16 Kbps for Basic Rate Interface or 64 Kbps for Primary Rate Interface. The speed is dependent on the end- user’s interface. H-Channel
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What is EZ-ISDN/IOC? W e highly recommend that you use our toll free ISDN ordering service to make sure you get the correct ISDN line the first time. The service is free to our customers. EZ-ISDN / IOC simplifies the ordering of your ISDN line. It lets you use simple codes to order pre-configured packages of ISDN features and services. The North American ISDN User's Forum (NIUF) and Local Exchange Carriers (LEC) administer the assignment of codes. Bellcore administers the National ISDN Orderin
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What is AutoSPID? (North America only) AutoSPID is a new National ISDN protocol feature which enables the DIVA T/A to download a list of Service Profile Identifiers (SPIDs), Directory Number and Call Type information from the ISDN line, and to determine whether the SPIDs are currently initialized by other devices. Note: Check with your ISDN service provider to determine if they support the AutoSPID feature. This feature effectively eliminates the need for you to configure any ISDN parameters. Au
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What is Non-Initializing Terminal Mode? (North America only) Non-Initializing Terminal mode is a new ISDN NI-1 protocol feature which enables the DIVA T/A to operate without SPIDs. This leaves the SPIDs available for use by other ISDN devices connected over the same NT1. To configure the DIVA T/A for Non-Initializing Terminal mode, deselect the SPID checkbox in the Windows Configuration Tool, or specify Yes for the Non-Initializing parameter in the VT-100 Configuration Tool. Warning: (NI-1 switc
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What is Multilink PPP? The DIVA T/A serves as an intermediary between its host workstation and the remote device to which data is being transmitted. All the protocol processing required for the negotiation of a Multilink PPP connection is performed on the DIVA T/A itself. The PC forwards asynchronous PPP packets to the DIVA T/A which, in turn, converts the packets for synchronous transmission and negotiates the various authentications required to establish the Multilink PPP connection with the t
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What is BACP/BOD? DIVA T/A supports the Bandwidth Allocation Control Protocol (BACP) and Bandwidth on Demand (BOD). These two features combine to allow the DIVA T/A to establish multilink sessions that provide larger amounts of bandwidth than that offered over a single dialup channel. Such multilink sessions are established according to procedures defined in the Internet Engineering Task Force (IETF) PPP Multilink specification (RFC 1717). BACP/BOD works by informing the DIVA T/A which dial-in p
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What is Data Compression? To establish communications over a PPP link, each end of the connection must first send packets to configure and test the data link. After the link has been established, optional facilities may be negotiated as needed. One such facility is data compression. A wide variety of compression methods may be negotiated, although typically only one method is used for both directions of the link. Data compression is a process where the effective throughput is increased by encodi
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AT Commands This section contains a description of all AT Commands relevant to DIVA T/A. Locating Commands To make it easier for you to locate a command, this guide has organized commands in two ways. AT Commands are grouped into several categories. Use the section AT Command Groups on page 15 to locate the relevant category. An alphabetical list of commands is also available. It is found in the section Alphabetical List of Supported AT Commands on page16 AT Command Format When using AT commands
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C ommand Format--Continued The DIVA T/A recognizes the backspace character for editing. When echo is enabled, a backspace or delete is echoed as a backspace character followed by a space character, and another backspace. The code used for the backspace character is programmable through register S5. Values equal to 0 or greater than 32, or the carriage return character value, cannot be used for the backspace character. T he AT sequence may be followed by any command sequence, except for the fol
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Alphabetical List of Supported AT Commands The following table summarizes the AT Commands supported by the DIVA T/A. Go to the specified page number for more information. Note: Static parameters are preceded by an asterisk “*”. Changes made to static parameters do not take effect until you restart your system (use the AT&Wn command to restart your system). Changes to all other parameters (dynamic parameters) take effect immediately. AT Command Description See Page ATA Answer Calls 40 ATDn Dial
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Alphabetical List of Supported AT Commands—Continued AT Command Description See Page ATS2=n Escape Character 36 ATS3=n Carriage Return Character 36 ATS4=n Line Feed Character 36 ATS5=n Back Space Character 37 ATSn? Value of S-Register n 26 ATVn Result Code Format 37 ATWn Connect Message Control 37 ATXn Extended Results Code 38 ATZn Restart Diva 47 AT!C1=n *ISDN Switch Type (Primary) 29 AT!C11=n *ISDN Switch Type (Alternate) 29 AT!C2=n *AutoSPID Storage Location 30 AT!C4=n *Enable/Disable Primary
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Alphabetical List of Supported AT Commands—Continued AT Command Description See Page AT!C51=n *Enable/Disable Alternate Non- 31 initializing mode for second B- channel AT!C6=n * ISDN Primary SPID Number 31 (applicable to North America only) AT!C61=n * ISDN Alternate SPID Number 31 (applicable to North America only) AT!C7=n * ISDN Primary SPID Number 31 for second B-channel (applicable to North America only) AT!C71=n * ISDN Alternate SPID Number 31 for second B-channel (applicable to North Americ
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Alphabetical List of Supported AT Commands—Continued AT Command Description See Page AT!E6=n V.120 T203 (Link Integrity Timer) 44 AT!E7=n V.120 Idle Timer 44 AT!N1=n * ISDN Primary Directory Number 32 AT!N11=n * ISDN Alternate Directory 32 Number AT!N2=n * ISDN Primary Directory Number 32 for second B-channel AT!N21=n * ISDN Alternate Directory 32 Number for second B-channel AT!N3=n * ISDN Primary Subaddress 33 AT!N31=n * ISDN Alternate Subaddress 33 AT!N4=n * ISDN Primary Subaddress for 33 seco
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Alphabetical List of Supported AT Commands—Continued AT Command Description See Page AT!V3=n V .110 Parity 45 A T!V4=n V .110 Stop Bits 45 AT!V5=n V .110 Flow Control 45 AT@MENU Activate VT100 Configuration Tool 26 AT$CP=n Enable/Disable Compression 51 AT$In On Demand SPID Testing 51 (North America only) AT$SL Stop LAPD Trace 52 AT$SM Stop Mail Trace 52 AT$SP Stop PPP Trace 52 AT$SQ Stop Q.931 Trace 52 AT$VI View Initial Profile 51 AT$VL View LAPD Trace 52 AT$VM Start Mail Tra
