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.
Voice over IP gateway VG200 was specially created for Cisco AVVID (Architecture for Voice, Video and Integrated Data) Call Manager. This device was not meant to support add-ons, such as toll bypass using H.323 protocol or SIP gateways.