The services provided by professionals in particular field. For example, a company may charge a certain sum of money for the certain tasks their consultant accomplished for the company who ordered the service.
TalkTT.com provides cheap web calls directly from Flash-enabled browser (IE, FireFox, Chrome, Safari ) on computer or SIP calls from any SIP compatible adapter like Linksys PAP2/SPA-3102 or PC phone X-Lite/Zoiper or Mobile Phone iPhone/Andriod/Symbian/WM.
Read more