Grandstream Analog telephone Adaptor (HT502)

Grandstream Analogue Telephone Adapter (Handy Tone 502 ), otherwise known as ATA, is a great solution for analogue applications in a Voice over IP network. The ATAs can be used for standard analogue devices such as analogue telephones or FAX machines. This saves you the hassle of adding extra analogue interface cards into your VoIP server, due to the fact that you now have the option of extending the analogue capability right up to the handset.