READ ME FIRST! 3 Connect the modem to an analog phone line. Plug one end of the phone cord into the telephone jack of the modem (labeled ) and the other end into the telephone wall jack. WARNING: Many offices and some homes have digital phone lines. The modem will be damaged if you use a digital phone line. Call your phone company if you are unsure which type of line you have. Installation Guide For Macintosh 1 Prepare for installation. Write the modem's serial number in the box below. The serial number is located on the white bar code sticker on the underside of the modem and on the modem's box. Interface The Serial Interface 2 part number 1.024.1926-00 Connect the modem to your computer. Shut down your computer. Firmly attach the enclosed serial connecting cable to both the modem and the port on the back of your computer marked with . Macintosh computers require an 8-pin mini-DIN hardware handshaking cable for high-speed communications. This cable is included in your package. If you want to use your modem and phone with the same telephone wall jack, plug your phone's cord into the other available jack on the back of your modem. Once your modem is connected, you may want to install the RapidComm software included with your modem. This allows you to send and receive faxes or call a local bulletin board service (BBS). TM Hardware Handshaking Cable Pin Assignments Hardwar dware Mini DIN-8 Handshake Output Handshake Input Transmit Data+ Ground Receive Data+ Receive DataTransmit Data+ Gen. Purpose Input HSKo HSKi TXDGND RXD+ RXDTXD+ GPI DB-25 Connector 1 4 RTS 20 DTR 2 5 CTS 3 2 TXD 4 7 GND 8 7 GND 5 3 RXD 6 not connected 7 not connected Before You Before You Begin Make sure that the following items are at hand: · modem · RJ11 (standard) phone cord · power adapter · serial connecting cable · this Guide Connect the power adapter to your modem and plug it into the wall. 4 Install the Connections CD and register your modem. Insert the Connections CD into your CD-ROM drive. The Connections CD icon will appear on your desktop, and then a window with a Connections icon and a Readme file inside it will open. Double-click the Connections icon within the window. The Setup Wizard on the CD guides you through installing the Connections CD and registering your modem. TM Note: The Handshake Output pin is connected to both pins 4 (RTS) and 20 (DTR) on the DB-25 connector. trouble oubleshooting contact F or trouble shooting help or to find out how to contact t e chnical suppor t, see the "Suppor t Re s ource s" support, "Support Res ources" section se ction on the other side of this Guide. For instructions on how to install software from the CD, see the "Software Installation" chapter in the electronic User's Guide & Reference on the CD. IMPORTANT! In accordance with the ITU-T standard for 56K transmissions (V.90), this modem is capable of 56 Kbps downloads. However, the download speeds you experience may be lower due to varying line conditions and other factors. Uploads from users to server equipment travel at speeds up to 31.2 Kbps. An analog phone line compatible with the V.90 standard and an Internet provider or corporate host site compatible with the V.90 standard are necessary for these highspeed downloads. Copyright ©1998 3Com Corporation. All rights reserved. 3Com, the 3Com logo and U.S. Robotics are registered trademarks; Connections and RapidComm are trademarks of 3Com Corporation. Macintosh is a registered trademark of Apple Computer, Inc. All other trademarks are used for identification purposes only and may be trademarks and/or registered trademarks of their respective companies. Troubleshooting Problem: The computer or software will not recognize or fails to initialize the modem. P ossible solution: solution: Make sure the modem is plugged in to both the power adapter and the serial cable and turned on. Use only the power adapter included with the modem. The CS and TR lights on the front panel should be illuminated. Possible Solution: If you have another modem installed in your computer, you may need to uninstall it before using your new 3Com modem. Possible Solution: Verify that your communications software is set to use the port to which your modem is attached, either the Printer or Modem port. If this is not the case, either change the setting in your software or physically change your modem's connection to your Macintosh. Refer to your software manual for information about changing modem settings. Problem: The modem won't go off hook to dial or doesn't answer the phone. solution: P ossible solution: You may have plugged your modem's phone cord into the wrong jack on the modem. Make sure the phone cord is plugged into a jack labeled with the word TELCO (marked with on the underside of your modem). solution: P ossible solution: You might have a bad phone cord connection to your modem. The phone cord ) and the should be plugged into the TELCO jack on the modem (marked with wall phone jack. The phone cord should be no longer than 12 feet in length. Use the phone cord included in your modem's box if possible. solution: P ossible solution: You may have devices between the modem and the phone jack. There should be no line splitters, fax machines, or other devices between the modem and the wall jack. solution: P ossible solution: You may have a poor line connection. Place the call again. Calls are routed differently each time. To verify a valid phone connection, enter your communication software's terminal mode and dial the 3Com BBS: ATX3DT18472626000 _________________________________________________________________________________________________________ Problem: Your 56K modem cannot achieve a 56K Internet connection. ______________________________________________________________________________________________ solution: Possible solution: V.90 supports speeds of up to 56K. Due to phone line restrictions, actual speeds will vary; this does not mean you have not achieved a V.90 connection. Our research shows that the vast majority of telephone lines in North America support V.90 connections. However, due to unusual or old telephone line configurations, some users will not be able to take full advantage of this technology. If this is the case, your 3Com modem will use its backward compatibility to negotiate a speed compatible with your phone line, such as V.34. It is important to remember that your line conditions may change, so you may be able to make faster connections in the future. To make sure that you can use V.90 or 3Com 56K technology, perform the following tests: 1. First, make sure your modem supports V.90. You can verify that your modem supports V.90 by opening a terminal application (RapidCommTM), typing ati7, and pressing ENTER. If the Options line has V.90 listed, then your modem supports V.90 and 3Com 56K technology. 2. Make sure that the number you're dialing is an actual V.90 or 3Com 56K technology server. Some ISPs may have a mixture of V.90 and non-V.90 servers. You can check this by contacting your ISP and asking them about 56K technology or V.90 availability. 3. If it is a V.90 or 3Com 56K server, you may want to try calling it a few more times. Remember, the phone company routes each call differently. For testing purposes, you may want to call into the 3Com BBS at 847 262 6000, which has V.90 servers attached to it. 4. If you are able to connect at V.90 speeds on the 3Com BBS, there may be something between you and your ISP that is preventing a V.90 connection from being negotiated. Contact your ISP and see if they have received similar reports from other customers. 5. If you do not make a V.90 connection to our BBS, your phone line might not be capable of supporting V.90 or 3Com 56K technology speeds. If you are experiencing consistent problems with V.90 connections (i.e., not making a high speed connection, abrupt disconnections, etc.), you can call 3Com Technical Support for U.S. Robotics modems at 847 262 5151. CompuServe Provides resources such as file libraries, message boards, online customer support, and product announcements. · Go to this address: GO THREECOM THREECO COM · Address private messages to 76711,707 However, there is no guarantee that interference will not occur in a particular installation. If this device does cause interference to radio or television reception, which you can determine by monitoring reception when the modem is installed and when it is removed from the computer, try to correct the problem with one or more of the following measures: · · · Reorient the receiving antenna (for televisions with antenna reception only) or cable input device. Relocate the computer with respect to the receiver. Relocate the computer and/or the receiver so that they are on separate branch circuits. Are You Still Having Problems? 1. Call the Dealer Who Sold You the Modem The dealer may be able to troubleshoot the problem over the phone or may request that you bring the modem back to the store for service. 2. Call 3Com's Technical Support Department In the United States: 847 262 5151 8:00 - 6:00 CST M-F In Canada: 905 479 0231 8:30 - 6:00 EST If necessary, consult your dealer or an experienced radio/television technician for additional suggestions. You may find the following booklet, prepared by the Federal Communications Commission, helpful: How to Identify and Resolve Radio-TV Interference Problems Stock No. 004-000-0345-4 U.S. Government Printing Office Washington, DC 20402 In accordance with Part 15 of the FCC rules, the user is cautioned that any changes or modifications to the equipment described in this manual that are not expressly approved by 3Com could void the user's authority to operate the equipment. For Canadian Modem Users NOTICE: The Industry Canada (IC) label identifies certified equipment. This certification means the equipment meets certain telecommunications network protective, operational, and safety requirements as prescribed in the appropriate Terminal Equipment Technical Requirements document(s). The Department does not guarantee the equipment will operate to the user's satisfaction. NOTICE: The Ringer Equivalence Number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the Ringer Equivalence Numbers of all the devices does not exceed 5. Please see the bottom of the modem for the REN. Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company's inside wiring associated with a singleline, individual service may be extended by means of a certified connector assembly (telephone extension cord.) The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situations. Currently, telecommunication companies do not allow users to connect their equipment to jacks except in precise situations that are spelled out in tariffing arrangements with those companies. Repairs to certified equipment should be coordinated by a representative designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment. For your own protection, make sure that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas. CAUTION: Do NOT attempt to make such connections yourself. Instead, contact an electric inspection authority or electrician, as appropriate. 3Com Corporation Limited Warranty 3Com warrants this hardware product to be free from defects in workmanship and materials, under normal use and service, for the lifetime of the product from the date of Manufacturer's Declaration of Conformity 3Com Corporation 3800 Golf Road Rolling Meadows, IL 60008 U.S.A. declares that this product conforms to the FCC's specifications: Part 15: Operation is subject to the following two conditions: (1) this device may not cause harmful electromagnetic interference, and (2) this device must accept any interference received including interference that may cause undesired operations. Part 68: This equipment complies with FCC Rules Part 68. Located on the bottom of the modem is the FCC Registration Number and Ringer Equivalence Number (REN). You must provide this information to the telephone company if requested. The REN is used to determine the number of devices you may legally connect to your telephone line. In most areas, the sum of the REN of all devices co ...