The SMC TigerVoIP Wi-Fi SIP Phone (SMCWSP-100) has a stylish compact candy bar design with a 1.8" LCD colour display. It's compliant with the SIPv2 Voice over Internet Protocol (VoIP) and can be used with a SIP based Internet Telephony Service Provider (ITSP), IP PBX and other SIP based client devices to make and receive VoIP calls anywhere you have wireless internet access. When used with an ITSP both home and business users can take advantage of reduced rate calls to the traditional telephonenetwork, and generally free calls over the Internet.