Dell Inspiron 1120 Hardware Manual page 9

Back to Contents Page
Introduction: Mini PCI Type 3B Data Fax Modem by 3Com User's Guide
Overview • Features
Overview
Model Name: Mini PCI type 3B Data Fax Modem by 3Com
Model Number: 3CN3BM556-D-100
Your Mini PCI 56K (V.90) modem by 3Com can connect at speeds up to 56,000 bits per second (bps), although FCC regulations currently limit
download speeds to 53,333 bps. It can also send or receive faxes at speeds up to 14,400 bps. With V.90 technology, your modem is capable of
receiving at up to 56 Kbps and sending at up to 31.2 Kbps. Actual download speeds you experience may be lower due to varying line conditions.
Compatible phone line and server equipment are required.
Features
Automatic Calling Card Dialing
Whenever you make a calling card call, your modem will detect the "bong" that sounds prior to entering your calling card number. You can set up
your modem to enter your calling card number and place your call automatically by entering the following string either in your communications
software or in terminal mode:
ATDT <phone#>&<calling card#>
Call Progress Detection
An optional set of result codes lets you know when:
The telephone number you have dialed is busy
l
The line has been picked up, but a modem is not answering the call
l
There is no dial tone on the telephone line
l
A call is coming in
l
These result codes, and the commands that enable or disable these result codes are controlled by the ATXn command. See ATXn in the Modem
Commands listing, and the Result Codes listing.
Dialing Stored Phone Numbers
Your modem can store up to four of your most frequently called numbers (
dialing stored phone numbers in the AT Commands section.
For example, suppose you are dialing a phone number of 123-4567, and it is the first number you want to store. Enter AT&Z0=1234567 to store
the number, and ATDS0 to dial it. To dial the second phone number in the list, you would enter AT&Z1 to store it, and ATDS1 to dial it.
Digital Line Guard
Your modem must use an analog line. If you are in an office and you are not sure what type of line you are connecting to, check with your telephone
company or telephone administrator. If that is not possible, use a line that is connected to a fax machine or another modem. If you only have a
digital line, you may be able to request a data line from your telephone company or telephone administrator.
The Mini PCI 56K Modem is equipped with a digital line guard to protect it if you accidently connect to a digital phone line. If, after you have
connected the cables and entered the communications software, a sound is made and this message appears:
SEE MODEM USER REFERENCE
PHONE LINE NOT VALID
"DIGITAL LINE ERROR"
Disconnect your telephone cable immediately! This means the modem is connected to the wrong kind of telephone line, like a line from a digital
PBX system. To use your modem, see if your digital PBX or telephone has a data port or look for a separate analog modem or fax line to use.
Back to Contents Page
through ). See
AT&Z0 AT&Z3 AT&Z
for storing that number and
ATDS
for