3CCM156 3Com 56k
PCMCIA Laptop Fax/Modem
3Com Global PCMCIA modem. K56flex 56K V.90
fax/modem. Part Number: 3CCM156. Runs with Windows 9x. RJ-11 modular telephone
cable supports choice of either Microsoft Windows?95 PNP or traditional COM
Port/IRQ setting using jumper settings.
-Card Size - 6.75 x 5 x .75 in/ 17 x 12.7 x 1.9 cm
-Weight - less than 5.5 oz/ 0.17Kg
-2 RJ-11 modular telephone jacks (Phone/Line)
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Your Megahertz 3CCM156 International Modem is built specifically for international use. If you purchased your modem in North America, adapters for use in Germany, France, and the United Kingdom are included in the box.
NOTICE: Filtered adapters for use in Germany and South Africa are custom adapters designed by 3Com. Using a German or South African adapter not supplied by 3Com through TeleAdapt may damage or destroy your modem. See the TeleAdapt catalog included in the box with the modem.
Your modem conforms to the standards set by the
Personal Computer Memory Card International Association (PCMCIA), an
organization that defines international standards for computer peripherals. It
can be used in PC Card 2.1- compliant notebooks.
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With V.90, your modem can download (receive) data files at up to 56,000bps and upload (send) data files at up to 33,600bps. 3Com guarantees that products with V.90 will be upgradeable to the 56kbps ITU industry standard.
Your modem can transmit faxes at speeds up to 14,400bps. The faster the modem speed, the shorter the transmission time, which means less phone time. This will keep your phone bill and any online services charges to a minimum.
Your modem can be used to connect to a standard telephone and, when used with communications software that supports e-mail, allows you to send and receive e-mail via an Internet ISP or browser.
One feature of your modem that contributes to higher speeds is its data compression feature, which squeezes data files into a fraction of their original sizes. And during transmissions, your modem will automatically detect and correct errors.
Your modem must use a standard telephone line—an analog line. If you are in an office, use a line that is connected to a fax machine or another modem. You may be able to request a data line at your site. If you a¡¯re transmitting from a hotel, request a room with a data port or standard telephone line.
If you are not sure what type of line you are connecting to, check with your telephone company or telephone administrator before using your modem.
All the software necessary to install and use this product is in the box. This includes:
When you open the box, check its contents to be sure all parts are included and ready for use. The package should contain:
WorldPort Country Select software allows you to select the country where you plan to use your modem, and it automatically configures the modem for that country.
AT commands allow you to control many of the functions of your modem. You can use AT commands by typing them at the command line of any Terminal program.
Your modem can display screens summarizing AT commands (AT$ and AT&$), dial command options (ATD$), and S-register functions (ATS$).
Whenever you make a credit card call, your modem will detect the "bong" that sounds prior to entering your credit card number. When it detects this sound, the modem can automatically enter your credit card number and place the call.
To use this feature, enter a string like this:
ATDT <phone#>&<credit card#>
The modem records the length of your last call in hours, minutes, and seconds. Call Duration Reporting lets you display and print an audit of your calling activity after each call.
An optional set of result codes lets you know when:
These result codes, and the commands that enable or disable these result codes, are controlled by the ATXn command.
Your modem can store up to four of your most frequently called numbers.
For example, suppose you are dialing a phone number of 123-4567, and it is the first number you have stored. You would enter AT&Z1=1234567 to store the number, and ATDS1 to dial it. To dial the second phone number in the stored numbers list, you would enter AT&Z2=9876543 to store it, and ATDS2 to dial it.
If issues arise with your modem, the firmware can often be updated to correct problems without the modem¡¯s being returned to 3Com. This is called "flash ROM."
If your modem is functioning properly, there is usually no need to flash it. In any case, we recommend flashing it only under the direction of a Customer Support Application Engineer.
You can remove your modem from the computer slot and reinsert it or a different PC Card without turning the computer off. This is called "hot-swapping." You can hot swap PC Cards any time a data transmission is not taking place.
NOTICE: Although you do not need to turn your computer off for hot swapping, we recommend that you do not remove or insert the modem while your communications software is open. Exit any communications software packages before removing your modem from the slot, and be sure to insert your modem before opening your communications software programs.
Your modem stores each dialed number until another number is dialed. When you enter ATDL, the modem will redial the last number dialed.
With V.90, your modem will be able to download (receive) data files at up to 56,000bps. Uploads from end users to providers travel at V.34+ speeds with V.90. A V.90-compatible local analog phone line and V.90-capable service provider are required for these high-speed downloads and uploads.
If your computer uses the Microsoft Windows 95 or Windows 3.1x operating system, your modem will work upon insertion. We recommend, though, that you run the Setup program on your Installation Diskette because it does all the extra work for you, such as:
Although your modem will run upon insertion, we suggest you run a:\setup so you can use the modem¡¯s enhancements, diagnostics program, and WorldPort Country Select software. Setup copies all these to your hard drive where you can use them.
To install your modem under Windows 95 and Windows 3.1x, simply follow these steps. Do not insert the modem until you are instructed to do so. The computer should be on with Windows 95 or Windows 3.1x started. Perform the following steps:
Your notebook will go through a brief installation process. Once this process completes, your modem will be installed and you will be given the option of registering your modem and installing this electronic Modem User Guide and RapidComm communications software and its electronic manual. If you are installing in Windows 3.1x, your computer will be rebooted during Setup.
Before you can use your modem to transmit data or faxes, you must have RapidComm or another communications software package installed and the cables connected (you may have done this during Setup).
To install your modem under the Microsoft Windows NT 4.0 operating system, simply follow these steps. Do not insert the modem until you are instructed to do so. Be sure to remove it from its plastic traveling case before you insert it into the PC Card slot in the computer.
Before you can use your modem to transmit data or faxes, you must have RapidComm or another communications software package installed and the cables connected.
After the modem has been set up and is in the PC Card slot in the computer, connect the cables.
For example, if you plan to use your 3CCM156 International Modem in France, the connection will look like Figure 1.
Figure 1. Connecting the Modem Cables to an Adapter
Registering your modem ensures you will receive information about new products and services from 3Com, and guarantees that your warranty will be effective.
Before registering, note the serial number on the back of your modem. You can register your modem in one of these ways:
Your Megahertz modem allows you to send and receive both data and fax files in conjunction with data and fax communications software. Data files can be in virtually any format, and can be edited. Fax files are in ASCII text format (which is converted to a graphics format) to be sent over a modem or to a dedicated fax machine. Fax files cannot be edited.
Your Megahertz modem can be used for data communications with an online service, the Internet, an electronic Bulletin Board System (BBS), or another modem at V.34+ speeds. With V.90, download data transfer speeds can be as fast as 56,000 bps. Your Megahertz modem can send and receive faxes at speeds up to 14,400 bps when used with fax communications software programs. Your modem supports both Class 1 and Class 2.0 faxing. The default is Class 1. If problems arise when you attempt to fax, we suggest you try changing the fax Class.
WorldPort Country Select software allows you to select the country where you plan to use your modem, and it automatically configures the modem for that country.
If you travel to a different country, you can change your modem's configuration by doing the following:
Connecting in different countries may require trial and error until you determine exactly what you need. This is because a particular country may have multiple exchange systems that require different configurations. The information provided below is to help you with this process. It is correct to the best of our knowledge at ship time.
Be sure to have the correct country adapter when you try to connect. We suggest you try the following steps, one at a time, starting with number 1:
To set blind dialing if you are using RapidComm communications software, perform the following steps:
To cause the modem to again detect a dial tone, simply reverse the procedure listed above.
If you are using communications software other than RapidComm, turn on blind dialing by inserting ATX3 into your software initialization string immediately before the telephone number. This will disable any Detect Dial Tone feature in your communications software.
If you are using Windows 95 dial-up networking, follow these steps to turn on blind dialing:
File transfer is the ability to transport files between two computers via two modems. The modems must use a file transfer protocol, which can correct errors in transmission and begin the file transfer process. Both modems must use the same file transfer protocol.
At the time you set up a file transfer, your communications software will prompt you to designate a file transfer protocol. Table 1 describes some of the most common protocols.
Table 1. Common File Transfer Protocols
|
Protocol |
Description |
| ZMODEM | Transfers files in a streaming protocol, making it very fast even with error correction. Also provides an automatic receive function that saves you steps when receiving data. |
| YMODEM-G | A variation of YMODEM designed for modems that support error control. Does not provide error correction or recovery, but relies on the modem to provide it. If any block is unsuccessfully transferred, the entire transfer is canceled. |
| YMODEM | An error correcting file transfer protocol that sends information in 1024-byte (1k) blocks. |
| XMODEM | An error correcting file transfer protocol that sends information in 128-byte blocks. |
| KERMIT | A very reliable asynchronous file transfer protocol that can communicate successfully with virtually any system. Because of this portability, throughput is significantly reduced. |
| ASCII | Sends TEXT ONLY files directly to the computer screen. Binary or graphics files cannot be transferred using the ASCII protocol. |
For the best results when sending or receiving a file, follow these basic rules:
To dial another modem, go into terminal mode in your communications software and enter ATDT followed by a space and the telephone number. Follow the instructions in your communications software to upload (send) or download (receive) data. A data transmission will be sent when the modems have negotiated the connection.
When sending a fax, check the software user manual before sending the fax, because different fax software packages treat the faxing process in different ways.
Opening the fax software loads the driver and prepares the modem to send the fax. If you are faxing from another application, you may have to create the fax, then go into the application's print setup menu to select the fax driver.
When dialing, enter the same information you would if you were calling someone on the phone, prefacing the number with *70 to turn call waiting off. For example, when dialing long distance, prefix the phone number with a 1 and the area code. If you are dialing from a telephone system that requires a 9 for an outside line, dial 9 before dialing the telephone number. You will probably need to place a comma or two after the 9 (9,,) to allow enough pause time to access the outside line (each comma designates a two-second delay.
A modem can answer a call in one of three ways: host, auto-answer, or manual answer.
Your software may allow you to create a cover sheet to accompany your fax. Some fax software packages offer an option to customize a cover page.
A cover page should give the person receiving the fax information about the fax, the sender, and the transmission. FCC regulations require the following information to be displayed on either the top or the bottom of at least the first faxed page:
You might also include the following information:
Check your fax software manual to see how your fax software handles receiving faxes.
A fax driver must be loaded before you can receive a fax. If auto receive is enabled, opening the fax software program loads the fax driver and prepares the modem to receive a fax. You must have the fax communications software open.
Windows fax packages may be opened and then minimized so you can receive a fax while working in another program.
To ensure successful fax operations, follow these suggestions:
| Problem or Message | Solution |
| Could not find a PC Card to install. | No PC Card is inserted in the slot. Insert a functioning modem. |
| Error: No modem IRQs are available for this card. | Check your computer¡¯s configuration. The modem IRQ defined cannot be used, or is being used by another PC Card. |
| The modem does not function or functions incorrectly. | In Windows 95, click Start; in Windows 3.1x, click File. Click Run and type c:\mhz\diagnose to use the DIAGNOSE.EXE file, which displays on the computer the modem¡¯s setup and other information pertinent to the modem. |
| Cannot hear modem or speaker. |
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| Modem not responding. |
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| The country where I am using my modem is not listed in the WorldPort Country Select software. | Select USA as the country designation and use blind dialing. |
| I have selected the correct country, but my modem will not work. |
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| I cannot get a V.90 connection. |
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| ERROR |
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| Modem does not dial correctly. |
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| Modem will not dial. |
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| Modem will not fax. |
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| Modem does not fit in the computer¡¯s PC Card slot. |
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| Modem not listed in software. |
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| Modem will not connect. |
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| Modem connects, but characters are garbled. |
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| Modem Communication Error or Modem not found. |
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| NO DIAL TONE. |
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| DIGITAL LINE ERROR. | The modem is trying to connect to a digital phone system or a Public Branch Exchange (PBX). Change lines to connect to a standard analog telephone line. |
| Modem clicks repeatedly, but no connection is made. |
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| Self test failed |
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| Modem will not work with the computer¡¯s proprietary power saving features turned on. | Do a hard boot, which turns off the computer¡¯s power saving features, and try using your modem. We recommend using only Windows 95 power saving features. |
| Frequent error messages when using the modem. | Your modem is probably not seated securely in the computer¡¯s slot. Pull the modem out and insert it again, giving it an extra little push to be sure it is tightly in the slot. |
| Modem will not work. There is a LAN Card or Ethernet•Modem in one slot and the Megahertz modem in another. |
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