Grandstream HandyTone 502

HandyTone 502 (HT-502) from Grandstream is an analog 2xFXS, 2xETH VoIP Gateway (SIP ATA adapter) with the integrated router.

Grandstream HandyTone series adapters (ATA / IAD / VoIP Gateway) offer a wide range of devices with excellent voice quality and other features, which allow user to choose the best device model suiting their needs.

Fully focused on open standards, these VoIP-gateways guarantee work with multiple systems, Softswitches and servers from various producers, supporting the SIP protocol. The HandyTone solutions have been tested and successfully used by many operators of IP-telephony (VoIP) around the world.

VoIP-Gateways from Grandstream Networks are successfully used by more than a dozen operators across the globe. VoIP-gateways produced by Grandstream Networks have been known in the U.S. telecommunications market as a reliable, easy to set up and use, low cost solutions for service providers and end users.

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RTP Delivers Multimedia Data In Real Time

A Real-time Transport Protocol (RTP) is a protocol standard defined by the Internet Engineering Task Force (IETF) that outlines a management system for programs using real-time transmission of data through mutlicast or unicast network services in multimedia situations. Originally designed by the IETF for videoconferencing for multiple participants, the protocol is largely used in Voice over Internet Protocol applications. Despite its name, the protocol cannot guarantee real-time delivery of data, however, the RTP does compensate for jitters and can detect when data arrives out of sequence, both issues being popular in VoIP communication. In IP telephony, RTP works with a signaling protocol, such as SIP or H.323, in order to set up connections in a network.

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