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1-6

HAPTER

1: I

NTRODUCTION

IBM PC or Compatible Requirements

An IBM-compatible PC must have the following:

■

A 386, 486, or Pentium



processor

■

Microsoft



Windows 95, Windows NT, or Windows 3.x,

MS-DOS



, or IBM PC DOS 3.x or higher

■

640 KB of conventional memory

■

A hard disk drive with 4 MB of free space

■

A high-density 3.5-inch floppy diskette drive

■

VGA or compatible video graphics adapter and monitor
(color recommended)

■

An available serial communications port

For 230.4 Kbps data rate

You will need an enhanced serial

port card and COM port driver software that support
230.4 Kbps.

For 115.2 Kbps data rate

3Com recommends that

your IBM or IBM-compatible PC serial COM port be
equipped with a 16C550 UART (universal asynchronous
receiver/transmitter). To determine what UART is installed in
your PC, run the Microsoft Diagnostic Program (msd) from
the DOS prompt.

Apple Macintosh Requirements

An Apple Macintosh computer must have the following:

■

An available serial communications port

■

System 7 or later operating system

■

A hard disk drive with 4 MB of free space

■

A high-density 3.5-inch floppy diskette drive

Содержание ISDN Modem

Страница 1: ...3COMIMPACT IQ EXTERNAL ISDN MODEM USER GUIDE Part No 09 0885 001 Published July 1997...

Страница 2: ...restrictions set forth in subparagraph a through d of the Commercial Computer Software Restricted Rights Clause at 48 C F R 52 227 19 and the limitations set forth in 3Com Corporation s standard comme...

Страница 3: ...hat the 3ComImpact IQ External ISDN modem has a 5 year limited warranty on the hardware in lieu of the standard 1 year warranty The software for the 3ComImpact IQ External ISDN Modem has a 90 day warr...

Страница 4: ......

Страница 5: ...he 3C882 ISDN Modem 2 2 Installing a Serial Cable 2 3 Installing the ISDN Cable 2 5 Installing Analog Equipment 2 5 Installing the Power Cable 2 7 3 CONFIGURATION FOR AN IBM COMPATIBLE PC Configuring...

Страница 6: ...Running the SPID Wizard 4 3 Configuring Multilink PPP 4 7 Configuring the B Channel Rate 4 8 Configuring Voice Call Routing 4 9 Two Telephone Numbers and Two Analog Devices 4 10 Verifying the Configu...

Страница 7: ...3 Monitoring the B Channel LEDs 8 3 Monitoring the SD LED 8 3 Monitoring the RD LED 8 3 Monitoring the DTR LED 8 4 Evaluating Symptoms and Solutions 8 4 Microkey Error Codes 8 8 Restoring the 3C882 IS...

Страница 8: ...dem Specifications C 1 RS 232 COM Port Pin Specifications C 2 PC Serial Cable Pin Specifications C 3 Macintosh Serial Cable Pin Specifications C 3 D CONFIGURATION USING DOS Configuration Using DOS D 1...

Страница 9: ...art Message for PC 3 4 3 6 First Telephone Number Dialog Box for PC 3 5 3 7 Second Telephone Number Dialog Box for PC 3 6 3 8 Successful Configuration Dialog Box 3 6 3 9 Configuration Dialog Box for P...

Страница 10: ...4 5 4 8 Second Telephone Screen for Macintosh 4 6 4 9 Configuration Dialog Box for Macintosh 4 7 4 10 Voice Call Routing Default Setting 4 9 4 11 Configuration for One Telephone Number and Two Device...

Страница 11: ...crokey Error Codes and Their Meaning 8 8 A 1 Supporting Supplementary Voice Features A 4 A 2 Line Configuration for AT T 5ESS NI1 A 5 A 3 Line Configuration for AT T 5ESS Custom A 6 A 4 Line Configura...

Страница 12: ......

Страница 13: ...r Turn to General information Chapter 1 Instructions for installation Chapter 2 Instructions for configuration for an IBM or compatible PC Chapter 3 Instructions for configuration for a Macintosh comp...

Страница 14: ...rred to in the text they are called out by their labels such as the Return key or the Escape key or they may be shown as Return or Esc If two or more keys are to be pressed simultaneously the keys are...

Страница 15: ...sh computers The 3C882 ISDN modem is designed for users who require high speed access to the Internet intranet on line information services or corporate local area networks LAN A typical 3C882 ISDN mo...

Страница 16: ...ce telephone call while maintaining a high speed connection to the office LAN you can also send or receive a voice telephone call while you are connected to the Internet The 3C882 ISDN modem can be co...

Страница 17: ...tion of up to 128 Kbps TollMizer which places a data call over a voice connection saving you the additional charge for a data call Support for Shiva s Proprietary PPP Password Authentication Protocol...

Страница 18: ...one equipment touch tone or cordless telephones fax and answering machines and analog modems to the ISDN line Flexible call routing to the two analog ports Upgradability Flash memory for field firmwar...

Страница 19: ...le ISDN RJ 11 outlet If you have not ordered ISDN service yet see Appendix A ISDN configuration information Complete the ISDN Information Sheet in the ISDN Information section of this chapter A comput...

Страница 20: ...ort For 230 4 Kbps data rate You will need an enhanced serial port card and COM port driver software that support 230 4 Kbps For 115 2 Kbps data rate 3Com recommends that your IBM or IBM compatible PC...

Страница 21: ...r telephone company ISDN representative for the ISDN information Figure 1 2 ISDN Information Sheet ISDN Switch Type Place a check mark next to the ISDN switch your telephone company uses Each switch t...

Страница 22: ...Telephone Number 1 Write down your ISDN telephone number provided to you by the telephone company ISDN representative ISDN Telephone Number 2 Write the second ISDN phone number if you ordered two ISD...

Страница 23: ...Macintosh or IBM compatible computer If you are not refer to the user guide that accompanied your computer for instructions on hardware installation and operating system commands The main hardware in...

Страница 24: ...panel Figure 2 3 Back Panel Connectors Table 2 1 Front Panel LED Indicator Definitions PWR TEST D B1 B2 SD RD DTR 3ComImpact IQ TM 3 Com RESET 9 VDC 6A MAX RS 232 ISDN U 1 2 LED Color Description PWR...

Страница 25: ...signaling procedures are not properly established Remains lit if the physical ISDN interface is not synchronized or is disconnected B1 Amber or green B1 Channel Activity Green indicates a circuit swi...

Страница 26: ...t the other end of the serial cable to a serial COM port on the back of your computer and tighten the connector screws On a PC most COM port connectors are labeled COM SERIAL or RS 232 D On an IBM AT...

Страница 27: ...DN cable to the RJ 11 ISDN wall jack CAUTION An NT1 is built into the 3C882 ISDN modem Never connect the 3C882 ISDN modem ISDN port to a standard analog telephone jack or to an external NT1 device Mak...

Страница 28: ...ith telephones that are compatible with the original AT T 2500 touch tone telephone standard 3Com guarantees proper operation of compatible touch tone devices that do not exceed a total ringer equival...

Страница 29: ...not guaranteed Installing the Power Cable To install the power cable 1 Connect the 3C882 ISDN modem power cable to the 9 VDC power connector on the back panel of the ISDN modem as shown in Figure 2 7...

Страница 30: ...This completes the 3C882 ISDN modem installation Refer to the appropriate chapter to configure the 3C882 ISDN modem either Chapter 3 Configuration for an IBM Compatible PC Running Windows or Chapter 4...

Страница 31: ...indows 95 Setup using Windows NT 3 5 1 Setup using Windows NT 4 0 Configuring Dial Up Networking Setup for 230Kbps For instructions on using the DOS operating system refer to Appendix D Configuring th...

Страница 32: ...ities diskette into an available floppy drive 2 If you are using Windows 95 select Run from the Start menu If you are using Windows 3 x select Run from the File menu In the Run dialog box shown in Fig...

Страница 33: ...e the following message during the Microkey installation procedure ERROR DURING INSTALLATION ERROR CODE XX please record the error code shown as XX above and refer to on page 8 7 for an explanation of...

Страница 34: ...C If you do not want to run the SPID Wizard click Cancel to configure your values manually via the configuration dialog box see Figure 3 9 Here you can select your ISDN switch type enter the telephone...

Страница 35: ...box for the first telephone number appears as shown in Figure 3 6 Figure 3 6 First Telephone Number Dialog Box for PC 2 Enter the first telephone number for your ISDN line 3 Click Next A message appea...

Страница 36: ...pears Figure 3 7 Second Telephone Number Dialog Box for PC 4 If you have a second telephone number for your ISDN line enter it and then click Next If not leave the field incomplete and then click Done...

Страница 37: ...l Registration dialog box will open 6 Click OK A message box indicates that you have correctly configured your 3C882 ISDN modem 7 Click No to verify your settings and continue the setup procedure reco...

Страница 38: ...the current Configuration dialog box settings in a file you name You can easily restore a previously saved file to the Configuration dialog box Restore Pressing the Restore button restores the 3C882 I...

Страница 39: ...Number dialog box appears 3 Enter the second telephone number for your ISDN line and then click Next Figure 3 8 appears 4 Click Finish Configuring Multilink PPP Multilink PPP is a protocol that provid...

Страница 40: ...to place a 56 Kbps data call using a voice channel which is often less expensive Note that the device you are calling must also support TollMizer sometimes referred to as Switch 56 Permissive or Data...

Страница 41: ...shown in Figure 3 10 By default ISDN Call Waiting has been enabled on Phone Port 1 for use with your telephone but disabled on Phone Port 2 to prevent potential interruption of calls to your fax mach...

Страница 42: ...rs and Two Analog Devices If you have two telephone numbers and two analog devices attached to your 3C882 modem you can choose to have both ISDN telephone numbers ring both devices simultaneously For...

Страница 43: ...ying the Configuration Check the status bar located toward the bottom of the Configuration dialog box If the parameters were configured accurately and the 3C882 ISDN modem is ready to send and receive...

Страница 44: ...our preferences If you prefer not to change the default settings go on to Chapter 7 Placing and Receiving Calls If you are using Windows 95 Windows NT 3 5 1 or Windows NT 4 0 refer to the appropriate...

Страница 45: ...oftware have already been installed To setup your 3C882 ISDN manually and bypass Windows 95 Plug and Play refer to the section Setup for Windows NT 4 0 below 1 Reboot your PC with the 3C882 ISDN modem...

Страница 46: ...g box appears as shown in Figure 3 14 Figure 3 14 Install From Disk Dialog Box 4 Insert the 3ComImpact IQ Windows Installation Diagnostic Utilities diskette into an available floppy drive 5 Click OK T...

Страница 47: ...a remote access configuration or continue on to Chapter 5 Advanced Configuration to review the default settings and ensure that they reflect your preferences If you prefer not to change the default s...

Страница 48: ...o the same directory as the MODEM ORG file 3 From the main menu select Control Panel and then select Network The Network Settings dialog box appears as shown in Figure 3 16 Figure 3 16 Network Setting...

Страница 49: ...ssage box appears 8 Click Cancel The Configure Port dialog box appears 9 Select 3ComImpact IQ for baud rates up to 115 2 Kbps and then specify the port usage Click OK The 3C882 ISDN modem allows for t...

Страница 50: ...e the default settings then go on to Chapter 7 Placing and Receiving Calls Setup for Windows NT 4 0 This section describes how to set up the 3C882 ISDN modem using Windows NT 4 0 Note that these instr...

Страница 51: ...Setup for Windows NT 4 0 3 21 Figure 3 18 Install New Modems Dialog Box 4 Check Don t detect my modem I will select it from a list and click Next...

Страница 52: ...k Have Disk 6 Select 3ComImpact IQ for baud rates of up to 115 2K and click Next The 3C882 ISDN modem allows for transfer rates of up to 230 4 Kbps However some computers require the installation of a...

Страница 53: ...s 95 and Windows NT 4 0 Dial Up Networking setup requires specific Internet Service Provider ISP information your particular setup parameters may vary widely You may need to check with your ISP for as...

Страница 54: ...ssary the country code of the location you are dialing 9 Click Next 10 Click Finish To make a call double click the connection icon for the destination you wish to access A connection dialog box will...

Страница 55: ...Select Connect Using My Phone Line Click Next to view the Connection Type dialog box 4 Choose to Connect to the Internet using an Internet Service Provider 5 Click Next If this is the first time you a...

Страница 56: ...5 Choose the appropriate box to send and receive email through the Internet Then enter your email address e g username isp com and your Internet mail server address 16 Click Next and Finish to exit th...

Страница 57: ...al Up Networking connection a message will indicate that your phonebook is empty Click OK to add an entry 2 Type a name for your connection and click Next 3 Select I m calling the Internet and click N...

Страница 58: ...w have an opportunity to verify various settings of your Dial Up Networking connection 6 Click More and select Edit entry and modem properties Verify your ISP s ISDN access number and your modem selec...

Страница 59: ...ss and enter it here 11 Click OK to return to the Phonebook Entry screen 12 Click the Script tab Set Script to None unless otherwise specified by your ISP 13 Click the Security tab Change the Authenti...

Страница 60: ...initial setup procedure Refer to Setup Using Windows NT 3 5 1 RAS earlier in this chapter for assistance 1 Ensure that your computer s COM port and communications software support 230 4 Kbps For instr...

Страница 61: ...reflect your preferences If you prefer not to change the default settings then go on to Chapter 7 Placing and Receiving Calls Setting up 230K for Windows 95 and Windows NT 4 0 These instructions requi...

Страница 62: ...rate 4 From the Control Panel dialog box double click the Modems icon The Modems Properties dialog box appears 5 Click Add The Install New Modem dialog box appears 6 Check the box to prevent automati...

Страница 63: ...ate to 230 4 Kbps for Windows 95 and Windows NT 4 0 Refer to Chapter 5 Advanced Configuration to review the default settings and ensure that they reflect your preferences If you prefer not to change t...

Страница 64: ...3 34 CHAPTER 3 CONFIGURATION FOR AN IBM COMPATIBLE PC RUNNING WINDOWS...

Страница 65: ...iguring Internet access for a Macintosh computer You will need the ISDN telephone numbers from the ISDN Information Sheet you completed in Chapter 1 Configuring the 3C882 ISDN Modem for a Macintosh Co...

Страница 66: ...essage box appears as shown in Figure 4 2 Figure 4 2 Installation Message Box 2 Click Continue The Readme file opens You can choose to review the document or print the file 3 Click Continue to install...

Страница 67: ...ally runs when you are configuring the 3C882 ISDN modem for the first time if you connect the 3C882 ISDN modem to a different ISDN line or if any of your ISDN line parameters have changed e g an area...

Страница 68: ...nected and then click OK The SPID Wizard start screen appears as shown in Figure 4 6 Figure 4 6 SPID Wizard Start Screen If you do not want to run the SPID Wizard click Cancel to configure your values...

Страница 69: ...3 Click Next The SPID Wizard first checks for ISDN layer 1status and then configures the switch type After the switch type is configured the First Telephone Number dialog box appears as shown in Figu...

Страница 70: ...telephone number for your ISDN line enter it and click Next If not leave the field incomplete and then click Done If you entered a second telephone number for your ISDN line the SPID for the second t...

Страница 71: ...ameter changes to your ISDN modem s S registers Update Firmware Refer to the readme file for firmware download instructions Diagnostics Use the Diagnostics tool only under the direction of technical s...

Страница 72: ...ster value In the dial string enter the first telephone number then the ampersand character followed by the second telephone number For example ATD 908 555 1212 908 555 1213 Configuring the B Channel...

Страница 73: ...Note the phone port check marks for each telephone number This default configuration routes each telephone number to a specified port The ISDN Call Waiting default configuration is best served by the...

Страница 74: ...e or receive calls because your ISDN line has only one telephone number Two Telephone Numbers and Two Analog Devices If you have two telephone numbers and two analog devices attached to your 3C882 mod...

Страница 75: ...Number 2 3 Click the Update Configuration button to download the change to your 3C882 ISDN modem s S register Verifying the Configuration Check the status bar located toward the bottom of the Configur...

Страница 76: ...Configuration to review the default settings and ensure that they reflect your preferences If you prefer not to change the default settings then go on to Chapter 7 Placing and Receiving Calls Configur...

Страница 77: ...Apple menu Control Panels and then PPP The PPP control panel opens as shown in Figure 4 13 PPP Control Panel 2 Configure the PPP control panel as specified by your ISP 3 Open the Modem control panel b...

Страница 78: ...script NOTE Users of Apple s System 7 6 or later must move the 3ComImpact IQ Modem Script files into a separate folder in order to access them from the OT PPP Modem control panel These CCL scripts we...

Страница 79: ...r ISP 8 Enter the Name server address es as directed by your ISP and the appropriate Search domain s if required Then choose File and Close When asked to save changes do so by choosing Save This retur...

Страница 80: ...y been installed on your system These instructions are for FreePPP 2 5v2 1 Open FreePPP Setup from the menu bar control panel located along the top of your Macintosh screen you must have the FreePPP S...

Страница 81: ...However you may wish to specify a more unique description to distinguish this particular dial up profile For example you may want to set up two types of connections to the same ISP one for single chan...

Страница 82: ...vailable for your computer and then select CTS RTS DTR from the pop up menu as shown in Figure 4 18 Click OK to return to the FreePPP setup screen 6 Click the General tab to return to the FreePPP Setu...

Страница 83: ...strings for each Account To do this check Use init string from account configuration in the Modem Init Strings Settings of the Modem Setup screen shown in Figure 4 19 You would then specify a specifi...

Страница 84: ...d Then choose File and Close When asked to save changes do so by choosing Save 11 To make a connection choose Open PPP Connection from the FreePPP menu bar control panel located at the top of your scr...

Страница 85: ...ware For Macintosh users terminal emulation software was provided in the 3ComImpact IQ folder during software installation The advanced configuration parameters and their default settings are as follo...

Страница 86: ...P call and is used for the voice call Once the voice call ends that B channel is automatically returned to the Multilink PPP call Although throughput is reduced to one channel while the voice call is...

Страница 87: ...automatically answered after the number of rings specified via the S register and a CONNECT message along with the speed of the connection is delivered to the RS 232 port Compression Compression is a...

Страница 88: ...lation software 2 Be sure the 3C882 ISDN modem is in command mode sometimes called local mode or terminal mode so that it interprets your commands When powered on the 3C882 ISDN modem automatically st...

Страница 89: ...71 0 Send the command ATS71 1 to use Async Sync PPP exclusively or ATS71 2 to use V 120 exclusively DBA Enabled for both incoming and outgoing calls S70 3 Send the command ATS70 0 to disable DBA Auto...

Страница 90: ...5 6 CHAPTER 5 ADVANCED CONFIGURATION...

Страница 91: ...determine whether or not these services are supported Note that there may be an extra charge to support these features Refer to Chapter A Ordering ISDN Service for additional information In some cases...

Страница 92: ...hook button Place the second call on hold and then switch back to the first call Press and release the flash hook The second call is then put on hold End the first call and then answer the second call...

Страница 93: ...tempting to dial a third party the Call Waiting takes precedence Call Conference Call Conference also referred to as Three Way Calling or TWC is a voice call feature that allows you to add another par...

Страница 94: ...to the first call What if I hear a dial tone when I attempt to conference all three parties A dial tone indicates that one of the parties has dropped their call Press and release the switch hook butt...

Страница 95: ...te Call Hold Call Drop Call Conference and Call Transfer key values 2 Launch your terminal emulation software You will need to change the values of S registers 77 78 and 79 3 Send the following comman...

Страница 96: ...SUPPLEMENTARY VOICE FEATURES This completes the procedure for Pacific Bell ISDN users Refer to Chapter 5 Changing the Parameter Settings or Appendix B AT Commands S Registers and Result Codes for furt...

Страница 97: ...r communications software send and receive calls for you or you can use a terminal emulator to place calls manually Software that communicates using AT commands such as HyperTerminal is required to co...

Страница 98: ...al emulation mode Follow these steps to use AT commands In most situations an initialization string is not necessary with the 3C882 ISDN modem If an initialization string is required by the communicat...

Страница 99: ...ISDN modem Configuration dialog box is checked The destination you are calling must also support Multilink PPP For example if you are trying to dial into the Internet your Internet service provider m...

Страница 100: ...the S 80 register value In the dial string enter the first telephone number then the ampersand character followed by the second telephone number as shown in the example above Placing a TollMizer Call...

Страница 101: ...with your Internet service provider to verify that they support it and that it is enabled The device you are dialing into must be capable of generating the 2 1 kHz tone needed to disable the echo canc...

Страница 102: ...the telephone handset or external fax machine off the hook wait for a dial tone and dial the destination telephone number When you place a voice call a B channel LED flashes amber and then remains lit...

Страница 103: ...ler ID which requires an additional external device to monitor incoming calls is not supported by the 3C882 ISDN modem However you must have Caller ID enabled on your ISDN line to utilize the Call Log...

Страница 104: ...tware to enter the command AT N0 Troubleshooting What if no information is displayed If you enter AT N but the Call Logging information is not displayed you may not have Caller ID provisioned on your...

Страница 105: ...r to Chapter A Ordering ISDN Service for assistance This chapter covers the following main topics Checking the basics Monitoring the LEDs Evaluating symptoms and solutions Identifying error codes Usin...

Страница 106: ...2 ISDN modem The 3C882 ISDN modem will not operate if connected to an analog telephone wall jack Make sure that the 3C882 ISDN modem is connected directly into the ISDN wall outlet without connection...

Страница 107: ...or green for a data call during the call establishment phase They then remain continuously amber or green once the connection is established If they do not remain continuously amber or green refer to...

Страница 108: ...as failed the self test D channel remains lit for more than a few minutes Poor physical connection to the local telephone company If the telephone wires at your site appear to be satisfactory call you...

Страница 109: ...he switch to unknown clear the values in the SPID fields by deleting the values listed in S52 and S53 Use terminal emulation software to enter the commands ATS52 and ATS54 B channel LED s do not remai...

Страница 110: ...e that your computer s COM port supports 230 4 Kbps or change the COM port setting of either your computer or the ISDN modem so that both devices are set to the same COM port rate Cannot place or rece...

Страница 111: ...or further assistance Note that ACO is not available on a 5ESS Custom switch Cannot place a call when a Multilink PPP call is active DBA DBA is not enabled Make sure DBA is enabled by setting S70 Refe...

Страница 112: ...device driver may exist on the computer Please contact 3Com Technical Support for further assistance 1006 Cannot remove combuf from the SYSTEM INI file An unknown third party device driver may exist o...

Страница 113: ...ion software on the connected computer to set the software at a low baud rate such as 1200 baud 2 Power up the 3C882 ISDN modem and observe the LEDs When the Test LED goes off observe the B1 and B2 LE...

Страница 114: ...bar and then selecting the 3ComImpact IQ Help Finding More Information For more information about the 3C882 ISDN modem such as frequently asked questions and specific technical notes refer to the encl...

Страница 115: ...propriate line parameters to your telephone company and schedule installation of your ISDN line wherever possible Be sure to ask for the order code or order confirmation number Placing the ISDN Order...

Страница 116: ...ISDN Call Waiting and incoming DBA Some telephone companies may choose to implement ISDN line provisioning uniquely Therefore some of the Supplementary Voice features may not be available for use with...

Страница 117: ...d incoming DBA are not available on a 5ESS Custom switch If you would like to utilize these services ask the representative if another switch type is available for your ISDN line 6 Ask the ISDN repres...

Страница 118: ...econd incoming call Additional Call Offering included with Ordering Code S1 Call Conference 3 Way Calling Allows you to add a third party to an existing call Flexible Calling FCO or 3 Way Calling Call...

Страница 119: ...l Offering FCO Yes Additional Call Offering ACO Yes Caller ID Yes Call Forwarding Variable Yes The Directory Number Circuit Switched Voice Maximum B Channels and Circuit Switched Voice Limit parameter...

Страница 120: ...Forwarding Variable Yes The Directory Number Circuit Switched Voice Maximum B Channels and Circuit Switched Voice Limit parameters should be set to 2 to allow both analog ports to be used simultaneou...

Страница 121: ...packet mode data NOPMD Protocol Functional version 2 PVC 2 SPID Suffix 1 Terminal Endpoint Identifier TEI Dynamic Maximum Keys 64 Ring No Key System EKTS No Voice or Data Both Data Option Lower layer...

Страница 122: ...ional SPID Suffix 1 Terminal Endpoint Identifier TEI Dynamic Key System EKTS No Flexible Call Offering FCO Yes Additional Call Offering ACO Yes Caller ID Yes Call Forwarding Variable Yes The Directory...

Страница 123: ...gs are 1200 2400 4800 9600 19200 38400 57600 115200 and 230400 Autobaud does not exceed 115200 For 230400 you must send the command AT B230400 to the ISDN modem C Compression When enabled compresses d...

Страница 124: ...AT I I displays the model number N Call Logging N displays the five latest incoming and outgoing calls over the data and analog ports N0 will clear this information O Enter connect state AT O Causes t...

Страница 125: ...s long form result codes default V Show version number AT V Displays ISDN modem firmware version W Displays connection speed W0 displays COM port rate only default W1 displays COM port and ISDN data r...

Страница 126: ...TI DMS 100 or Siemens EWSD S51 Phone 1 S52 Phone 1 Service Profile ID SPID S53 Phone 2 if required by your carrier S54 Phone 2 Service Profile ID SPID if required by your carrier S55 Terminal Endpoint...

Страница 127: ...m has initialized successfully using SPID 2 2 ISDN modem has failed initialization using SPID 2 S59 U Interface Status This field is read only 0 ISDN U interface is not synchronized with the switch 1...

Страница 128: ...to Phone port 2 only 12 Phone 1 calls blocked Phone 2 to Phone port 1 or 2 13 Phone 1 to Phone port 1 only Phone 2 to Phone port 1 or 2 14 Phone 1 to Phone port 2 only Phone 2 to Phone port 1 or 2 15...

Страница 129: ...AdTran compatibility use 253 S75 Connection Delay Specifies whether the ISDN modem immediately answers a call or waits 2 seconds to answer If you are using Windows NT use the two second delay 0 No de...

Страница 130: ...cters By default the 3C882 ISDN modem automatically sets the Endpoint Discriminator value to the first telephone number If your endpoint identifier class is not 5 obtain the identifier from your servi...

Страница 131: ...cation you are calling is not responding 5 CONNECT 1200 Indicates 1200 bps serial port connection 10 CONNECT 2400 Indicates 2400 bps serial port connection 11 CONNECT 4800 Indicates 4800 bps serial po...

Страница 132: ...B 10 APPENDIX B AT COMMANDS S REGISTERS AND RESULT CODES...

Страница 133: ...Basic Rate telephone service provided by the telephone company Physical Interface U integrated NT1 Physical Dimensions Length 8 66 in 22 0 cm Width 5 44 in 13 8 cm Height 1 56 in 4 0 cm Environmental...

Страница 134: ...data communications equipment DCE Table C 1 Pin Descriptions Pin Pin Name Signal Direction 1 Shield Ground GND 2 Send Data SD To ISDN modem 3 Receive Data RD From ISDN modem 4 Request to Send RTS To...

Страница 135: ...3 Table C 2 PC COM Port Cable Pin Assignments DB9 Pin Pin Name DB25 Pin 1 Data Carrier Detect DCD 8 2 Receive Data RD 3 3 Send Data SD 2 4 Data Terminal Ready DTR 20 5 Signal Ground GND 7 6 Data Set...

Страница 136: ...C 4 APPENDIX C SPECIFICATIONS...

Страница 137: ...ilities diskette into the floppy drive of the PC Create a new DOS directory For example to create a directory named 3Com on your C drive at the C DOS prompt type md c 3Com 2 Copy the INSTALL EXE and R...

Страница 138: ...eld enter the telephone number to which your ISDN modem is connected 8 Enter the corresponding Service Profile Identifier SPID in the SPID 1 field for the telephone number you entered in the previous...

Страница 139: ...ring the analog device attached to Phone Port 1 12 If your ISDN line has two telephone numbers specify which Phone port should handle the calls associated with telephone number two 13 Confirm that th...

Страница 140: ...D 4 APPENDIX D CONFIGURATION USING DOS...

Страница 141: ...communications software Autobaud Automatic baud rate detection Autobaud automatically detects the baud rate of your computer s serial port B channel Bearer channel In ISDN communications a B channel t...

Страница 142: ...puter COM ports only allow a maximum of 115 2 Kbps However accelerator cards can be purchased to increase the computer s COM port rate to 230 4 Kbps Compression Compression is a method of reducing the...

Страница 143: ...DN Call Waiting ISDN Call Waiting is a supplementary voice feature that allows you to place a voice call on hold while you answer an incoming voice call ISDN Call Waiting requires Additional Call Offe...

Страница 144: ...lain old telephone service PPP Point to Point Protocol PPP provides a standard method of transmitting data through the Internet PPP is used for communication between a computer and an Internet service...

Страница 145: ...ta channel Your telephone company ISP and the device into which you are calling must all support this feature V 120 A rate adaption scheme that converts transmission rates from a range of 300 bps to 1...

Страница 146: ...6 GLOSSARY...

Страница 147: ...ting 5 4 AT T 5ESS Custom switch A 6 AT T 5ESS NI1 switch A 5 Auto Answer 5 3 Autobaud 5 3 B B channel data rate 3 10 4 8 B 5 B channel LEDs 8 5 B1 channel LED 2 3 B2 channel LED 2 3 monitoring 8 3 ba...

Страница 148: ...ePPP 4 16 OT PPP 4 12 changing 5 4 for an Apple Macintosh computer 4 2 using DOS D 1 using Windows 3 1 using Windows 95 3 15 using Windows NT 3 5 1 3 17 using Windows NT 4 0 3 20 Windows 95 230K 3 31...

Страница 149: ...tallation 2 1 analog equipment 2 5 Apple Macintosh configuring Multilink PPP 4 7 configuring the B channel rate 4 8 configuring voice call routing 4 9 running the SPID Wizard 4 3 software 4 2 verifyin...

Страница 150: ...SDN Call Logging 7 7 L LEDs B1 channel 2 3 B2 channel 2 3 D channel 2 3 Data Terminal Ready 2 3 description 2 2 monitoring 8 2 Power 2 2 Receive Data 2 3 Self Test Status 2 2 Send Data 2 3 M Macintosh...

Страница 151: ...physical dimensions C 1 placing calls 7 1 data 7 1 using AT commands 7 2 using TollMizer 7 4 voice 7 6 Plug and Play setup with Windows 95 3 15 power cable connection 2 7 Power LED 2 2 power requireme...

Страница 152: ...missive See TollMizer switch type A 5 to A 8 T Test LED 8 2 8 4 TollMizer 7 4 placing a call 7 4 troubleshooting 8 1 checking the basics 8 2 evaluating symptoms and solutions 8 4 Microkey error codes...

Страница 153: ...Windows NT 3 5 1 3 17 Windows NT 4 0 3 20...

Страница 154: ......

Страница 155: ...ovided 3Com s sole obligation with respect to this express warranty shall be at 3Com s discretion to refund the purchase price paid by Customer for any defective software products or to replace any de...

Страница 156: ...LITY TO THE FULL EXTENT ALLOWED BY LAW 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY WHETHER BASED IN CONTRACT OR TORT INCLUDING NEGLIGENCE FOR INCIDENTAL CONSEQUENTIAL INDIRECT SPECIA...

Страница 157: ...l as the supporting documentation to the same party or destroy any such materials not transferred Except as set forth above you may not assign your rights under this License Agreement Modification rev...

Страница 158: ...to agreements entered into and to be performed entirely within California between California residents and by the laws of the United States You agree that the United Nations Convention on Contracts f...

Страница 159: ...at interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and...

Страница 160: ...customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian ma...

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