a cloud phone system is a Voice over IP (VoIP) based business telephoneplatform that is hosted by a third-party provider such as OnSIP. Cloud phonesystems typically offer advanced security and telephony features such as: extension dialing, auto attendants, and conference bridges
Enter would create a new line, thus allowing you to enter a paragraph, on some applications you can use "Shift+Enter" if it is an IM application like Skype.