The Send Calls button is used to send calls to your coverage path.
When you enter and value in the programming, when activated send calls on the extension you put in the programming, not the extension your where at.
i.e. send_calls 3440, programmed on station 3449. When the send calls button is pressed on station 3449, would turn on send alls calls for station 3440.
Making a new converge path for station 7224 with extension 7229 assigned in the converge path before voice mail. Then when you select the send calls button on station 7224, all new calls to 7224 will give one short ring on the station before following the converge path.