Voice for the Angels

Linksys by Cisco, a division of Cisco Systems, is a manufacturer of a line of popular VoIP (Voice over IP) adapters. These Voice over IP analog adapters have continued to grow in favor with service providers and end users thanks to their ease of use and reliability.

The Linksys line of adapters is called the SPA series. The SPA series was originally the product of Sipura technologies, an early VoIP start-up that was acquired by Linksys. The core technology behind the Sipura adapters is still the same technology used inside of a Linksys adapter.

Although there have been numerous models, the current VoIP adapter offerings within the series is comprised of three different devices. These include:

• PAP2T – The Linksys PAP2T is the most commonly used device of the three offerings. It originally gained acclaim as the defacto device for use with Vonage. The PAP2T comes with two (2) FXS ports for the connecting of telephones and a single Ethernet port for Internet connectivity. The device can be used with any SIP based service provider and retails for around $55 USD.
• SPA2102 – The Linksys SPA2102 is similar to the form and function of the PAP2T, but features an additional Ethernet port (for LAN/WAN connections). While not as popular as the PAP 2T (primarily due to it being a little more expensive), the SPA2102 is a popular option for many service providers and end users in need of a second Ethernet port. It is also SIP compatible and can be found online for around $70 USD.
• SPA3102 – Last but not least, the SPA3102 is the most advanced VoIP adapter from Linksys. The SPA3102 features a single FXS port and a single FXO port, allowing for the connection of a POTS line. This allows those using the device to have a fail over should their network or Voice over IP service go down. With this added functionality comes an increase in price (can be purchased for about $75), but the extra couple of dollars is worth every penny – especially if you’re worried about service outages.

Obviously this is just a general overview. More specific information can be found through the Linksys website, your favorite voice over ip service provider or through equipment suppliers like VoIP Supply.

Garrett Smith is the Director of Marketing and Business Development at VoIP Supply, the leading supplier of Linksys VoIP Adapters and VoIP phones in North America since 2002.

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Cisco SPA8800 VoIP Gateway – 1 x 10/100Base-TX WAN, 4 x FXS , 4 x FXO $438.99 Developed for small businesses, the Cisco SPA8800 IP Telephony Gateway adapts to the needs of businesses that maintain their own on-premise IP private branch exchange (PBX) or that want to add voice over IP (VoIP) to their legacy time-division multiplexing (TDM) PBX or key system. The SPA8800 can be configured to be a FXO gateway for an Asterisk open source PBX, providing a versatile solution when conditions favor an external device.

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Zoom – X6v 5697 ADSL Router – 4 x 10/100Base-TX LAN, 1 x FXS, 1 x FXO – IEEE 802.11b/g – 125Mbps $90.99 The Zoom Model 5697 integrates a full-rate ADSL 2/2+ modem, router, 802.11g wireless access point, VoIP telephone adapter, firewall, and four-port 10/100 Ethernet switch into a single cost-effective product. The integration of networking devices, along with Zoom’s FastLane Quality of Service and Installation Wizard simplify setup, maximize dependability, and provide superior voice communications and video delivery over the Internet. The VoIP telephone adapter in the Model 5697 is SIP-based and has been SIP conformance tested by the University of New Hampshire (UNH) Interoperability Lab.

Cisco Four-Port VIC Voice Interface Card (VIC) – 4 x FXO WAN – Voice Interface Card (VIC) $499.99 This VIC include 4-port foreign exchange station (FXS). This card cover a full range of digital voice and WAN connectivity options and provide connectivity to the world’s PBXs, PSTNs, and Post, Telephone, and Telegraph (PTT) organizations.

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Cisco SRP 527W Wireless Broadband Router – 54 Mbps 1 x ADSL Network WAN, 4 x 10/100Base-TX Network LAN, 2 FXS, 1 FXO – IEEE 802.11n (draft) $205.99 Cisco SRP 500 Series Services Ready Platforms are flexible, competitively priced customer premise equipment (CPE) that have application intelligence to enable service providers to create, provision, and deploy premium revenue-generating services ? a variety of high-quality data, voice, security, and applications services ? to small businesses. Interoperability with industry-leading DSLAMs, soft switches, and voice gateways supports end-to-end multiservice network deployments. Industry-standard TR-069, and XML-based provisioning allows near zero touch deployments, reducing costly truck rolls.

Adtran Total Access 924 VoIP Multiservice Access Gateway – 16 x FXS, 8 x FXO, 1 x , 1 x DSX-1 WAN, 1 x T1/FT1 WAN, 1 x 10/100Base-TX LAN $1378.99 Adtran offers a wide variety of solutions for converged voice/data services. Our new Total Access 924 SIP-based multiservice access gateway is the next generation of Adtran’s industry-leading Integrated Access Device. This new product is designed for carrier VoIP networks and feature all of the same robust routing and voice features of the widely deployed Total Access IADs, along with a host of new features and functions that enable cost effective, reliable IP service delivery. This device use the Adtran Operating System (AOS) to simplify management and administration. Multiple models offer flexibility for varied applications from PRI delivery and trunking services to hosted IP PBX offerings.

Cisco SRP 521W Wireless Broadband Router – 54 Mbps 4 x 10/100Base-TX Network LAN, 2 FXS, 1 FXO, 1 x 10/100Base-TX Network WAN – IEEE 802.11n (draft) $171.99 Cisco SRP 500 Series Services Ready Platforms are flexible, competitively priced customer premise equipment (CPE) that have application intelligence to enable service providers to create, provision, and deploy premium revenue-generating services ? a variety of high-quality data, voice, security, and applications services ? to small businesses. Interoperability with industry-leading DSLAMs, soft switches, and voice gateways supports end-to-end multiservice network deployments. Industry-standard TR-069, and XML-based provisioning allows near zero touch deployments, reducing costly truck rolls.

OCTAL FXO NIM2 ALOG TRUNK-VOICE I/F VIM2 NETV6310 $610.99 OCTAL FXO NIM2 ALOG TRUNK-VOICE I/F VIM2 NETV6310

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Adtran NetVanta 7100 Integrated Services Router – 2 x SFP (mini-GBIC) Shared, 2 x Expansion Slot – 2 x FXS, 2 x FXO, 1 x 10/100Base-TX WAN, 24 x 10/100Base-TX L $3526.99 The NetVanta 7100 is a complete IP telephony and data networking solution for business locations of up to 50 employees. This all-in-one platform includes a IP PBX, voicemail, full-featured IP router, firewall, VPN, 24-port powered (802.3af) fast Ethernet switch with Gigabit uplinks, and two expansion slots for NIM/VIMs. The NetVanta 7100 IP PBX functionality includes SIP-based telephony features, voicemail (12 hours, 8 ports), auto attendant, caller ID name/number, classes of service, trunk groups, music-on-hold, overhead paging, and a number of call options including call coverage lists, forwarding of calls to a cell phone, and e-mail notification of voicemail.

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Transition Networks POTS to Fiber Optic Stand Alone Media Converter – 1 x RJ-11 , 1 x ST $550.99 The Transition POTS phone line converter system is intended to connect central-office voice grade signals to distant Plain old telephone equipment (POTS) utilizing standard telephone signaling. Two units are required to implement an end to end system; Unit A connects to a telephone line or PBX and has the ability to detect ringing voltages and to act as a telephone (LINE SIDE FXS). Unit B is the reciprocal unit and has the ability to act as a Central Office and connects to a telephone device (CUSTOMER SIDE FXO).

Clymer Harley Davidson Fls/fxs twin cam 88B, 95B & 103B, 2000-2005 $30.47 Clymer Harley Davidson Fls/fxs twin cam 88B, 95B & 103B, 2000-2005