400電話(hua)不管是企(qi)(qi)業(ye)對內還是對外(wai)，都(dou)能夠(gou)起到關鍵性的作用，因此備(bei)受企(qi)(qi)業(ye)的青睞，大(da)部分企(qi)(qi)業(ye)會選擇網上辦(ban)理400電話(hua)，全(quan)國(guo)各(ge)地的企(qi)(qi)業(ye)都(dou)可以(yi)選擇尚(shang)通科技官網辦(ban)理。

聯(lian)通(tong)(tong)(tong)400電(dian)(dian)話(hua)(hua)是是中國工業(ye)(ye)信息化部授(shou)權中國聯(lian)通(tong)(tong)(tong)固話(hua)(hua)運營商(shang)在全國推出的免長途(tu)費(fei)用(yong)(yong)的電(dian)(dian)話(hua)(hua)服務(wu)。該業(ye)(ye)務(wu)的通(tong)(tong)(tong)話(hua)(hua)費(fei)由主、被(bei)叫分(fen)攤(tan)付費(fei)又稱主被(bei)叫分(fen)攤(tan)付費(fei)業(ye)(ye)務(wu)。 用(yong)(yong)戶(hu)(hu)只(zhi)要支(zhi)付當地市話(hua)(hua)費(fei)用(yong)(yong)，被(bei)叫(企(qi)業(ye)(ye)用(yong)(yong)戶(hu)(hu))只(zhi)要支(zhi)付長途(tu)費(fei)用(yong)(yong)，即可實現自由通(tong)(tong)(tong)話(hua)(hua)。聯(lian)通(tong)(tong)(tong)400電(dian)(dian)話(hua)(hua)分(fen)為4000和4006號(hao)段(duan)，是目前400電(dian)(dian)話(hua)(hua)業(ye)(ye)務(wu)發展最好的。