HP Compaq NX9000, Reference Manual

Page: 46 / 121

Modem and Network Connections
Using the Modem
Reference Guide 37
To connect the modem
CAUTION
Your built-in modem may not work with multiple phone lines or a private
branch exchange (PBX), cannot be connected to a coin-operated telephone, and
does not work with party lines. Some of these connections may result in excess
electrical voltage and could cause a malfunction in the internal modem. Check
your telephone line type prior to connecting your phone line.
Special restrictions in certain countries
•
Many countries impose a blackout period after a modem repeatedly fails to
connect to a service provider. The number of failed attempts and the period you
must wait before trying again differ from country to country. Check with your
telephone company.
For example, if you are dialing from Italy and fail to connect to your server or
cancel the connection, you must wait one minute before dialing that number
again. If you dial before then, you will get an error message that says “delay.”
After the fourth failed connection, you must wait one hour before trying the
number again. If you dial before the hour is up, you will get a message that says
“black list.”
•
When using a modem, an external surge protector can prevent damage to your
notebook from lightning or other electrical surges. Connect any approved surge
protector to the modem cable when you are using the modem.