Founded in 2000,Calltel in a profession Call Center Headset brand Telcent Communications Device Co.,LTD(branch in Guangzhou,Shanghai,Beijing and Chengdu).Callter is now the largeset company producing headsets in call center industry in China.As a professional call center headset manufacturer,we understand that call center is more cruical than ever for company's business.We are continuing to invest in R & D in headset technology to provide superior sound quality,fit,comfort,stability,compatibility and durability.Callter are paricularly known for its durability. Callter holds the title of national largeset handset sales for 4 consecutive years from 2005 to 2008.It paved the way towards our leading position in technology information industry in China.It has also hit a milestone in call center industry history.Calltel is therefore widely accepted as the top headsets brand in China .