Before using a dial-up connection, verify that the connection can be established correctly. To do this, manually establish a connection using the dial-up connection application provided by Windows, and ping the local host and the connection destination host. Alternate between the connection source and the connection destination about five times to ensure that a solid ping response is received and that the IP address does not change.

Note that if an IP address is used, the ping should be sent using the normal TCP/IP IP address. If no response is received, a dial-up connection via the IP address cannot be used.