A Cloud PBX can be connected to CTI Data Connector for Salesforce® either using a special handset or a special software phone.
There are different options to connect to CTI Data Connector for Salesforce®
•Use a handset from Snom, Yealink, Mitel or Panasonic - click here for a detail list
•Use a softphone from Global IP Telecommunications Ltd (Ninja Pro or Juggler) http://www.globaliptel.com. This software works with all SIP compatible phone systems
•Use a Mitel/Aastra, Tiptel, Gigaset DX or Yealink phone. You need to install the TAPI driver for this phone. - http://www.xtelsio.com (Xtelsio CTI Client). Aastra phones are also supported by Juggler (http://www.globaliptel.com)