Diamond SupraExpress 56e Manual page 50

Compatibility With Other Modems
Your modem has been tested with most major brands of modems, and all of these modems work
properly with the protocols your modem supports. If you cannot make a connection and you
suspect the remote modem might be the source of the problem, consider the following:
• The remote modem might need a firmware upgrade if it was purchased some time ago. Several
• If the remote modem is a 2400 bps modem that does not support error correction/data
Problem:
If you get a NO DIAL TONE result code or you cannot get your modem to dial, one of the following
may be the situation:
Solution: Your telephone line is plugged into the wrong jack. Make sure that your telephone line is plugged
into LINE and your (optional) telephone is plugged into PHONE.
or
You have too many devices on the line. Try unplugging other phone devices connected to your
phone line. You might also try adding an X to the end of your initialization string.
or
Your Digital or PBX does not support modems. Your PBX system must be equipped with standard
analog lines for your modem.
or
Your modem may not recognize the dial tone if you are not in the USA. Set the modem to the proper
country code (if your modem supports Feature #120). Or try adding an X to the end of your
initialization string.
or
The modem uses the inside two wires on the phone cable. If you have a multiline phone system,
your modem will not get the dial tone signal over the outside two wires.
or
If you have a voicemail system that gives you a stuttering dial tone to indicate new messages, then
the modem should be set to ignore dial tone. Include several commas before the phone number to
help the modem dial properly.
or
Your modem may have suffered damage from a recent power surge or an electrical storm. Contact
Technical Support.
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pioneers in the high-speed modem business have released upgrades to fix compatibility
problems with early units.
compression, it may not allow enough time for the negotiation process. Try turning off
correction/compression by issuing the &UØ command.