A call shop is a business that provides physical phones for the purpose of making long-distance telephone calls. There are two main types of call shop payment methods; prepaid and postpaid.
Osool Telcom Solutions, Inc. strives to make VoIP more mainstream by helping VoIP service providers prepare for the challenges that are just now emerging on the horizon.
Osool helps them do this by enabling them to outsource their complete VoIP back-e