VoIP Phones & Cloud-based Telephony | Read Time: 3 mins.

“What is VoIP?” is probably one of the most frequently asked questions we get and it made us realise something; we probably love an acronym far too much in the telecoms industry.

So, we’ve decided to build a comprehensive list of some of the most overused acronyms in the industry.

What is VoIP?

Voice over Internet Protocol (also known as IP telephony) is a method of delivering voice communication through the internet. It works by converting your voice into a digital signal. It allows you to be able to make a call directly from a computer, a phone connected to the internet (VoIP phone) or other data-driven devices such as many smart-phones and/or tablets.

What is SIP?

Session Initiation Protocol (SIP). In simple terms, SIP is the set of rules that help govern how VoIP data is transmitted. It is the communication network behind VoIP software that allows for calls (both voice and video) to be made. SIP is particularly useful as it allows two people with different VoIP software to communicate with each other.

What is PBX?

Private Branch Exchange (PBX) is an internal telephone exchange or switching system that typically serves private organisations. A PBX allows for internal calls to be made between users without the need for using external lines. On-site PBX systems are being phased out by most organisations due to the vast benefits of VoIP telephony.

What is Hosted PBX?

Hosted telephony or Hosted PBX as it’s often labelled is a virtual version of a PBX (private branch exchange). Rather than installing the phone system on-site, the system is hosted in a data centre. The end-user simply connects via the internet to the PBX and has access to the features and functionality provided under their chosen subscription.

What is UCaaS?

Unified Communications as a Service (UCaaS) is a system that offers a deep feature set for phone users while also integrating a long list of other channels, including video conferencing, in-house texting, online collaboration, and softphone capabilities. UCaaS can be used on a broad range of devices including standard desk phone, a laptop or PC or a mobile device.

What is PSTN?

Public Switched Telephone Network (PSTN) is the collection of the worlds public telephone networks. This is made up of both commercial and government-owned networks. It is the traditional circuit-switched telephone network and has been in general use since the late 1800s. It uses underground copper wires and is seen as a legacy platform which is undergoing replacement within the UK to a full-fibre optic network.

What is ISDN?

Integrated Services Digital Network (ISDN) is a set of communication standards for digital transmission of voice and data over the traditional circuits of the PSTN. ISDN allows for multiple digital channels (voice, data, text etc.) to operate concurrently through the same copper wire. Much like on-site PBX systems, ISDN is being phased out to be replaced with VoIP due to the high maintenance and low functionality of ISDN.

What is DDI?

Direct Dial Inbound (DDI) allows callers to call indirectly to a specific number for an individual or department. This means that the caller does not have to go through a switchboard.

What is SLA?

Service-level Agreement (SLA) is the commitments we make to our clients on how we deliver their service. Particular aspects are quality, availability and the responsibilities we would provide for specific services and products.

What is FTTC?

Fibre-to-the-Cabinet (FTTC) is a connectivity technology to the internet that is based on a combination of fibre optic cables and copper cable. This technology provides the super-fast broadband connection over fibre optic cables from the local exchange to the green cabinet and then copper cabling to the customers’ premises.

What is FTTP?

Fibre-to-the-Premises (FTTP) is a connectivity technology to the internet that is based on full fibre optic cables from the local exchange to the customers’ premises. FTTP provides end-to-end fibre optic connectivity and delivers much faster speeds than FTTC as there is no copper to slow the speeds down.