# Phone Configuration

To make changes to your Phone Configuration, either connect to or work off-line with the desired RTU. From the Configuration menu, select Devices. When the Device Settings dialog box appears, select the Phone Configuration tab (which should already be displayed by default):

- RTU Phone Number – This field is used to store the phone number of the phone line connected to the Catalyst. No FAX session can occur unless the RTU Phone Number is configured. This is a FCC requirement. If the phone number has not been configured, an error message will appear.
- Call Progress Monitoring -- When enabled, the RTU will listen on the phone line for call progress tones from the phone company central office. These call progress tones include; dial tone, ringback, and busy signal. They inform the RTU of the progress of calls made to telephone destination. See Call Progress Monitoring.
- Outgoing Call Answer Limit -- If Call Progress Monitoring is enabled, this parameter will enable you to set the maximum number of seconds (not rings) the RTU will wait for any Destination to answer before abandoning that call attempt, and moving on to place the next appropriate call. See Outgoing Call Answer Limit.
- Speaker Enable -- This option turns the RTU speaker ON or OFF during remote voice sessions. See Speaker State.
- Country – This read-only parameter reflects the modem's CPM specification.
- Dialing Mode -- Determines whether pulse or tone dialing is used for outgoing phone sessions. See Dialing Mode.
- Ring Answer Delay -- Determines the number of incoming rings before the RTU will answer an incoming call. Note that because of telephone system properties, the actual delay can vary by plus or minus one ring from the value set. See Ring Answer Delay.
- Call-In Timer -- This is the amount of time the unit will wait between answering the call and the start of a session. Associated with Alarmware, Log File downloading, and Central Station connections.
- Clear All -- The Clear All button returns all phone configuration parameters to their factory-default settings.
- Clear Item -- The Clear Item button will restore the current field to its default setting.