Here you can compare the prices for voIP telephone adapters Grandstream Networks, get acquainted with photos and technical characteristics (for example Fax modes, Authentication method, Data compression, VPN support, Caller ID, Call waiting) and buy a liked model voIP telephone adapters in one of the reliable online stores.
HandyTone 503 ATA
The HT503 is a hybrid Analog Telephone Adapter (ATA) and VoIP Router. It features both an FXS (analog telephone) port and an FXO (PSTN) port so you can have backup lifeline support using a PSTN line in the case of a power outage. It also integrates 2 10/100 RJ45 ports with an integrated high performance NAT router.
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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