Provide wholesale international callback service in China for voip service providers and call shops. We offer competitive price and billing system to our wholeseller. We are using SS7 PSTN line and no connection fee to customers.
The telecomchinasourcing.com team have many experience professionals who has many years experience in telecommunication area. She has good relation with Beijing University Post & Telecom. A few employees also work in the university as Professor or PHD. S
Read more