Grandstream Networks je proizvajalec z velikimi nagradami IP izdelkov govorne in video telefonijo, video konference ter video nadzorov že od leta 2002.

Analogen telefonski vmesnik HandyTone 503

HandyTone 503

The HT503 is an analog telephone adapter featuring 1 analog telephone FXS port and 1 PSTN line FXO port. The integration of a FXO and FXS port enables remote call origination and termination to and from the PSTN line, known as hop-on and hop-off" calling. The 1 FXS port allows for extension of a VoIP service to 1 analog phone. In addition to being SIP compliant, the product features support for up to 2 SIP account profiles, excellent voice quality and advanced telephony features
  • 1 FXS analog telephone ports (RJ11), 1 PSTN line FXO port, dual 10/100 Mbps ports with integrated NAT router
  • Advanced telephony features include caller ID, call waiting
  • 3-way voice conference, transfer, forward, do not disturb, message indicator, multi-language voice prompts, T.38 fax, flexible dial plan and more
  • Supports up to 2 SIP accounts
  • Status LED for power, telephone and network ports, and message waiting indication
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