Category: VoIP Wiki

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What is Unified Communications (UC)

Understanding VoIP and UC and how they transform Business Communications.

If you are a business owner and you are looking to modernize your company’s phone system, you would definitely come across these two terms: VoIP, which stands for Voice over IP, and Unified Communications (UC).

Many of us are familiar with VoIP technology and how it is different from PSTN and ISDN. A VoIP PBX in contrast to a regular telephone system, offers a number of benefits. To learn more about them, read the blog article on Migration from PSTN to VoIP.

However when it comes to Unified Communications, many people still get confused, which technology or a group of technologies stands behind this buzzword?
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SIP trunking. The difference between PSTN, ISDN and VoIP.

sip trunkingYears ago when VoIP first appeared on the scene, in the time of dial-up Internet, it was associated with poor audio quality and dropped calls. Today it is no longer a problem, thanks to the increased availability of broadband Ethernet services. Large and small companies, public administration organizations worldwide opt for VoIP, while some other enterprises are still hesitant to make the move.

It might be just the right time to learn more about VoIP technology and SIP trunking: the largest telecom providers all around the world stop offering ISDN and PSTN in 2018 and have announced complete phasing-out over the next ten years.
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What is IVR? Examples and benefits of IVR service.

What is IVR?

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Interactive Voice Response (IVR) is a technology allowing humans to interact with phone systems through DTMF tones input via keypad, or by speech recognition.

Interactive Voice Response is not necessarily related to VoIP technology.

Examples and benefits

An example of IVR is when you call a company or business, and then you hear “press 1 for technical assistance, press 2 for sales support, press 0 to speak to the operator”.
After you make your choice, your call is routed to an extension/call queue, or, for example, a voice message is reproduced to you. Otherwise you enter an IVR submenu which offers more options that you can select.
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The difference between FXO and FXS

The difference between FXO and FXS

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FXO and FXS are the ports used by analog phone lines and analog phones and faxes.
These two interfaces are always paired (FXO is always connected to FXS and vice versa).

In telecommunications, FXS and FXO are used to indicate whether VoIP equipment is designed to support analog phones (stations, FXS) and analog lines (office, FXO).

FXS is the port used by analog lines, example: telephone jack on the wall / FXS ports of an analog telephone exchange used to connect analog devices.
To connect analog devices to VoIP PBX, use FXS media gateway (media gateway with FXS port).

FXO is the port used by analog devices, example: FXO port of an analog phone, modem, fax (these devices are often called FXO devices), FXO port of an analog telephone exchange used to connect lines.
FXO media gateway (media gateway with FXO port) is necessary to connect analog line to VoIP PBX.

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