Carrier Detect 7-3Carrier Detect Carrier means there is communication with the device on the other endof the connection. Under normal conditions, the Business Modem sendsa Carrier Detect (CD) signal in response to establishing a connection withanother modem. You can use the AT&Cn command to control how theBusiness Modem sends the CD signal..For your modem to CommandHave CD always ON. AT&C0Send CD normally (the Business Modem sends a CD signalwhen it connects with another device, and drops the CD signalwhen it disconnects).AT&C1
