Refurbished Phone Exchange Blog — ip telephony

ShoreTel Phone Guide - learning the basics

Posted by Rick Torres on

ShoreTel phones have always been hot commodities here at Refurbished Phone Exchange.  They come preconfigured and packed with important features, have a simple yet elegant design, and come in a wide range of prices.  Since we love ShoreTel phones so much here, we've decided to create a ShoreTel Phone Guide to help our customers pick the VoIP phone that's right for their business.   ShoreTel Phone Glossary 110 115 210 212K 230 230G 265 420 480 530 560 560G 565G 655   ShoreTel 110 IP Phone The ShoreTel 110 is perfect when desk space is at a minimum.  The 110...

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Creating an Open Standards VoIP Community – Session Initiation Protocol (SIP)

Posted by Jeff Csisar on

Session Initiation Protocol, commonly referred to as SIP, is a protocol commonly used in the voice over IP (VoIP) community. The session initiation protocol creates, maintains, and ends data transmission between two or more parties for an established data media stream of voice or video. What SIP does not do is transmit the media stream itself. SIP works in conjunction with another protocol such as real-time Transport Protocol (RTP) or Secure Real-time Transport Protocol (SRTP) to deliver the actual data. Why SIP is important is that SIP is the most common open standards protocol for establishing phone calls. Many telecom...

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Difference between analog, digital, and IP telephony

Posted by Rick Torres on

Those small businesses and sole proprietors who are responsible for choosing their own phone systems often run into some confusion when it comes to analog, digital, and IP technologies. This article will explain the basics about each technology and allow you to choose the most appropriate phone system for your business with more confidence. Analog telephony, or POTS Analog telephony, also known as POTS, stands for plain old telephone service and uses the narrow RJ-11 plug to support your standard phone, fax machine and modem. Analog technology works by translating audio (your voice) into electronic pulses. Analog is most likely...

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