Top 5 VoIP Phone Adapters

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A VoIP or Voice-over-Internet Protocol phone adapter utilises a broadband Internet connection rather than a regular telephone connection to make and receive telephone calls. A VoIP phone adapter connects to a regular analogue telephone. A USB cable then connects the adapter to an Internet router. The router, through an IP network, connects to a VoIP provider. VoIP phone adapters provide more telephone service choices and lower costs for buyers while utilising regular analogue telephones and fax machines. eBay offers VoIP phone adapters and other equipment. Some of the top brands include Grandstream, Cisco, Linksys, Audiocodes, and Obihai. Buyers compare VoIP phone adapters according to their specifications, security features, equipment, and provider costs and compatibility.
1 Grandstream HT701 VoIP Adapter
Grandstream HT701 VoIP Adapter

The Grandstream HT701 VoIP Adapter provides a single FXS port analogue adapter for residential and business use. The network interface offers an RJ-45 Ethernet auto-sensing port (10M/100Mbps). Additional features include voice and data security protections, LINK/ACT LED indicators, T.38 fax, call waiting, caller ID, and voicemail indicator. Supporting voice codecs include G.711, iLBC, G.726, G.729A/B, G/723/1, and Annex I/II.

2 Cisco SPA112 VoIP Adapter
Cisco SPA112 VoIP Adapter

The adapter">Cisco SPA112 VoIP Adapter offers an analogue adapter with two RJ-11 FXS ports for small business telephones and fax machines. The network interface includes an RJ-45 (100-Base T) WAN Ethernet port. The adapter provides voice and data security protections, including Secure RTP (SRTP) calling. Additional features include caller ID, call waiting, call forwarding, call transfer, three-way calling, and voicemail. Supporting voice codecs include G.711, G.729A, and G726. Cisco also offers a subscription service that provides updates and upgrades for its VoIP phone adapters.

3 Linksys SPA3102 VoIP Adapter
Linksys SPA3102 VoIP Adapter

The adapter">Linksys SPA3102 VoIP Adapter offers a two-port VoIP adapter with router. Analogue telephones and fax machines utilise the RJ-11 FXS port. The second port offers an analogue FXO connection. The broadband Internet connection routes local cell phone calls and landline calls to VoIP providers and eliminates expensive long distance and international phone charges. Network interfaces include two RJ-45 Ethernet ports. Additional features offer security protections, voicemail, call waiting, caller ID, and call forwarding.

4 Audiocodes MP202 VoIP Adapter
Audiocodes MP202 VoIP Adapter

The Audiocodes MP202 VoIP Adapter offers two RJ-11 FXS ports to connect to POTS fax machines and analogue telephones. The network interface provides RJ-45 Ethernet WAN and LAN ports. An integrated router includes a PC phone connection. The adapter provides call forwarding, call waiting, and caller ID. Supporting voice codecs include G.711, G.726, G.723.1, G.729A/B, iLBC, and GSM FR. The adapter, a part of the MediaPack series, offers a high-end media gateway for residential and small business providers.

5 Obihai OBi100 VoIP Adapter
Obihai OBi100 VoIP Adapter

The Obihai OBi100 VoIP Adapter offers an RJ-11 FXS port analogue adapter. The network interface includes an Ethernet port (10/100 BaseT). The adapter utilises OBiTALK, Google Voice, and SIP. Additional features include call waiting, caller ID, call forwarding, three-way calling, speed dialling, and voicemail indicator. Supporting voice codecs include G.711, G.726, and G.729. Buyers without regular telephone service like this adapter for its affordability and ease of use.

Important Considerations Before Purchase

Some important considerations before purchasing a VoIP phone adapter include the quality of the hardware and software, inclusion of future updates and upgrades, and the number and types of telephone ports. Affordability considerations include the adapter's cost and the cost of service with compatible providers. Product support also ensures buyer security if the adapter becomes inoperable.

Decoding the Common VoIP Acronyms

VoIP products and adapters utilise acronyms that represent codes or technical terms for VoIP products and services. IVR or Interactive Voice Response offers users the option of using voice commands or a touch phone keypad to transmit commands. SIP or Session Initiated Protocol connects to a PSTN or public switched telephone network, allowing users the flexibility of connecting various media components such as video, voice, and data into a single connection. The FXS and FXO ports provide telephone interfaces to effectively transmit the connections. The FXS or Foreign Exchange Subscriber interface provides provider service for the subscriber through physical equipment connections. The FXO or Foreign Exchange Office interface receives the equipment signals from the subscriber and transmits and decodes them for the provider.

The Voice Transmission Protocol

The voice transmission protocol transmits the user's voice across an Internet connection through an IP network rather than through a traditional telephone landline. The main voice transmission protocol for VoIP includes the SIP or Session Initiated Protocol. This protocol allows the transmission and communication between different devices inside and outside the network through an Internet provider.

The Voice Transmission Codec

The voice transmission codec allows the user's voice to effectively transmit across the network for premium quality and clarity. Many VoIP adapters utilise several supporting voice transmission codecs to compress the sound into transmissible digital packets compatible with the broadband Internet connection. At the final destination, the reassembling of the digital packets occurs.

How to Buy the Top 5 VoIP Phone Adapters on eBay

Buyers can search for VoIP phone adapters from any eBay Web page. Buyers enter keywords, such as VoIP phone adapter, into the search bar and then read descriptions of listings to compare specifications, security and telephone features, service providers, and equipment costs and compatibility. eBay offers quality, affordable VoIP phone adapters for residential, small business, and mobile needs. VoIP phone adapters utilise existing analogue telephone equipment and fax machines. eBay also offers special daily deals on electronics, and VoIP adapters are sometimes included. VoIP phone adapters provide buyers with the latest affordable communications technology to utilise voice and Internet services.
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