Telanetix has extended an agreement with call-tracking technologies provider, CallSource, to help companies increase their marketing effectiveness, sales and improve customer service. Under the agreement, Telanetix will provide business phone services for CallSource.

Telanetix's AccessLine offers its VoIP Volume Service for 30 to 40 percent less than traditional phone companies. The service is specifically designed for high volume applications and includes local, long distance, toll free and international calling.

"CallSource introduced call tracking to the business world more than a decade ago, and we have just introduced Results, the first and only integrated marketing analysis and sales training system," Elliot Leiboff, chief strategy officer at CallSource, said in a statement. "Our customers' relationship with us is built on trust, and it is important that this trust extend to all aspects of our operation."