Grandstream Handytone 503 Analog Adaptor

£46.57 inc. VAT (UK only - more info)

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Availability: In stock

• IP connectivity for any phone and fax
• Hop-on/Hop-off calling
• Web management for easy configuration and installation
• Offers traditional and advanced telephony features
• Portable and compact for use at home or on the road

Grandstream HandyTone HT-503 Features

• 1 FXS telephone port (RJ11), 1 FXO PSTN line port (RJ11) with power-outage life line support
• Up to 2 SIP account profiles, SIP over TCP/TLS, SRTP
• Dual 10/100 Mbps network ports (RJ45) with integrated high performance NAT router
• Status LED for power, telephone, PSTN line, network, and message waiting indication
• Advanced telephony features
  o Caller ID from both IP and PSTN
  o Call waiting, 3-way conference with IP and/or PSTN
  o Remote call origination and termination from/to PSTN
  o Hop-on and hop-off calling
  o Transfer to OR forward to IP or PSTN
  o Do not disturb
  o Message waiting indication
  o Multi-language voice prompts
  o Flexible dial plan, direct IP calling
• Comprehensive voice codecs
• Secure and automated provisioning using HTTP/HTTPS/Telnet/TFTP
• Symmetric and asymmetric voice codec/RTP in any call sessions
• T.38 Fax
• SIP over TCP/TLS