What is STUN TURN and ICE?

Firewalls are great! They help keep the Internet from destroying your super-critical kitten pictures on your server. They also break phone calls. That’s a problem.   Okay, so it’s not firewalls that break phone calls – though they can. A firewall typically separates two networks that either can’t or shouldn’t be allowed to talk directly to each…

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What is SRTP and TLS?

Secure Real-Time Transport Protocol and Transport Layer Security go together like peanut butter and jelly. These two protocols work together to encrypt your phone calls in modern phone systems. To really understand them though, we need a brief history lesson in how media worked in the past, and even what “media” is. “Media” is a blanket term…

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What is a SIP Trunk?

If you don’t know what SIP is, click here to see our previous article explaining the technology. Basically, SIP is a technology used to deliver communication. When we talk about a SIP Trunk, it usually implies that a carrier, like AT&T, is delivering phone services to you over an IP connection using the SIP protocol….

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What is SIP?

SIP stands for Session Initiation Protocol, and it’s used to send detailed information about how two endpoints, like phones, will communicate with each other. Though SIP is not just for phones. SIP is used to send Instant Messages, update statuses called “Presence” indicating if a user is on the phone or in a meeting, and establish complex scenarios like…

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What is UC (Unified Communications)?

Unified Communications is a blanket term for applications that provide multiple means of collaborating – the common trifecta being Instant Messaging, Voice, and Video. In the market today, we have Cisco’s CUCM, or Cisco Unified Communications Manager, and Microsoft Skype for Business. There are other players in the UC space, like Avaya and 3CX, but they own…

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What is a PBX?

A PBX, or Private Branch Exchange, is a term that comes from the days when phone systems were just starting to come into existence. A PBX was a phone system that allowed a way for telephone lines to be shared by more than one person. Before a PBX, everyone needed their own direct connection to the…

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What is Telecommunications?

Today, we’re constantly in touch with our peers. We can call, instant message, video chat, and email to and from pretty much anywhere in the world. This sort of begs the question: How? The answer? Telecommunications.   Telecommunication is the transmission of signs, signals, messages or intelligence of any nature by wire, radio, optical or other…

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