Microsoft KB Archive/131193

= Microsoft Knowledge Base =

Carrier Tone Heard but Modem Loses Connection
Last reviewed: October 7, 1997

Article ID: Q131193

The information in this article applies to:


 * The Microsoft Network versions 1.0, 1.2, 1.3, 2.0, 2.5

SYMPTOMS
When you attempt to connect to The Microsoft Network, you hear a carrier tone but after 15 or 30 seconds the modem may lose the connection.

CAUSE
The S7 register, which controls the amount of time the modem waits for a carrier, probably does not have a sufficient value for the modem to recognize a compatible carrier issued by the remote modem.

RESOLUTION
Set the S7 register to a value of at least 60. To do so, follow these steps:


 * 1) Click Start, point to Settings, and then click Control Panel.
 * 2) Double-click Modems.
 * 3) Click Properties.
 * 4) Click the Connection tab.
 * 5) Click the "Cancel the call if not connected within" check box to select it, and then type "60" (without quotation marks) in the Secs box.
 * 6) Click OK or Close until you return to Control Panel.