Bandwidth - Measured as the number of bits transferred per second. VoIP requires anywhere from 24kbps to 90kbps. Bandwidth is rarely an issue for Cable/DSL/Fiber.

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Broadband Phones - Phones that use high-speed internet to make telephone calls for a fraction of the traditional price or FREE. Broadband phones (also known as a VoIP phones or IP phones) also allow you to access the most up-to-date technology. Speak to in multiple clients or family members, or transfer calls between offices around the globe. All you need is a VoIP phone, or a softphone on a computer,  and the internet with software (VoIP Service Provider is optional).



Delay - Measured in milliseconds (ms). The longer the delay the more difficult a conversation becomes. The ITU recommend that one way delay should not exceed 400ms for acceptable speech quality (<100ms is good).



DID - Direct Inward Dialing service provider delivers a telephone number over VoIP protocol including SIP, IAX2 or h323. This DID Phone Number will receive calls using a sip soft phone, hard phone, or an IP PBX. The charges are charged per month, and per min, and per channel based. You do not require a hardware card in case you have a DID service provider to receive call, ie a PRI Card or a Analog Card. The call travels to you all the way over the Internet.



HSPA+ or Evolved High Speed Packet Access, allows users to experience high-speed Internet service on the WIND network. With download speeds of up to 21.1Mbps, HSPA+ means less loading and more surfing.



Jitter - Jitter when applied to VoIP is a variation in packet transit delay (from queuing, contention and serialization effects on the path through the network). Faster, higher bandwidth networks tend to have less jitter. A QoS device like an ATA can help eliminate some of this jitter.



Packet Loss - Measured as a percentage. Your voice is transmitted digitally over the internet in segments, referred to as "packets". A packet loss of up to 5% will go largely unnoticed. Above that reduces call quality.



PBX stands for "Private Branch Exchange." A PBX lowers telephone costs by assigning extensions to various employees, instead of paying for separate phone lines.



SIP Session Initiation Protocol:  defines how calls should be established.

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VoIP Using Voice over IP (VoIP), any computer or telephone connected to the internet with a broadband connection can call another computer or phone at a fraction of usual cost — or absolutely FREE VoIP providers charge a lot less than traditional landlines, because they don't have to maintain an old and expensive network. Instead, they connect callers via the Internet. And not only do they charge less, but they offer innovative features: voice mail to email, anyone?



WiMAX - Worldwide Interoperability for Microwave Access. Transmits Voice, Video and Date via radio signals (Transceivers).







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