Telephone systems

Telephone System

Every business needs to communicate with its stakeholders. Perhaps your brand-new small business requires a budget-friendly telephony solution to connect with your clients? Or maybe your successful business has outgrown its existing telephone system and requires more advanced features to maintain the highest level of operation?

At Yello, we understand that one size can’t fit all when it comes to communications solutions. That’s why we offer a wide range of systems to suit all shapes and sizes of business, and work closely with our customers to determine which is the best for them.


Traditional ISDN lines will be switched off in 2025 with PSTN likely to follow, and will not be available for businesses to purchase from 2020. At Yello, all of our telephone solutions are based on Voice over Internet Protocol (VoIP) technology, taking advantage of modern high-speed internet to make and receive calls – and all for cheaper than traditional phone solutions. 


On-site or Hosted?

The first question we help our customers answer is whether an on-site communications processor or externally hosted solution is best for their business.

On-site phone systems

Great for larger businesses who require more advanced telephony features, on-site systems require the installation of one (or multiple) central processor units on-premise.

The primary advantages of an on-site system are:

  • There are no ongoing per-user license fees, as there are with hosted solutions.
  • It's quick and easy to add additional users; just plug-in additional handsets and you're ready to go.
  • On-site phone systems are usually more feature-rich, with manufacturers developing the most advanced handset and processing units for larger enterprise usage.
  • With the central processor located on-site, less bandwidth is required for data transfer.

Hosted phone systems

With hosted phone systems, call processing units are located off-site and extensions to them rented from a telecoms partner. With no installation of technical equipment required, hosted services are the quickest and easiest solution to get up and running.

The primary advantages of hosted systems are:

  • Technical updates, diagnostics and system, maintenance are all handled off-site by your provider, so site visits aren't required to keep your phone system running smoothly.
  • Cost-effective for small companies that are just getting started.
  • Great for larger companies with multiple sites or teams who move between different offices or desks often.
  • Additional users and extensions are quick and easy to add or amend through online management platforms.
  • Desktop handsets are plug and play, often using Power over Ethernet (PoE) to function.

Whilst an on-going user subscription model may not be the most cost-effective in the long term, hosted solutions are often preferable due to their ease of use and manageability

Another factor to bear in mind is that hosted systems can often require more bandwidth, as even internal calls are processed over the internet. 

However, with increasingly capable high-speed internet solutions becoming standard, this is often only a concern for the largest of organisations.

If you’re in need of high-speed business internet, see how Yello can help.



VoIP Business Phone solutions from Yello offer a range of basic features expected if all telephone solutions, as well as advanced functionalities usually reserved for enterprise level systems. It’s all the benefits of a cloud solution combined with the features of a Private Bank Exchange.


Not all teams require voicemail but for others, it’s imperative to have an easy to access, easy to manage voicemail system, to ensure no opportunity is missed.

Hunt groups

Team work really does make the dream work. A hunt group allows for incoming calls to one telephone number to be answered, directed and managed by a specific group of people.

Virtual groups

With our virtual number function, your business can appear to be calling from a specific geographic location; useful when dealing with more local audiences or running specific campaigns

Call Waiting

Being aware is always helpful. Call waiting informs your team that a call is waiting on the line with a discreet beep, and provides options on how to manage that call.

Auto attendant

Answering and distributing incoming calls isn’t always the best use of your teams’ time. Auto attendant menu systems allow calls to be transferred to the right extension without going through an operator first. It’s like having an extra member of staff.

Call recording

Learning from your calls helps your business grow. Used for both inbound and outbound calls, recording can be retrieved and played back with a fully PCI compliant solution.

Mobile Office

Mobile Office from Yello is a softphone application that gives your team members the power to manage calls through their Windows or Mac desktop, Apple iPhone or iPad, or Android phone. For on-the-road teams, it’s the ultimate travelling office.


Knowledge is power. This feature displays real-time and historical statistics on the performance of call centre and agents. It’s fully customisable with various statistics and, because it’s browser based, doesn’t require installation of any additional software on local devices.

CRM integration

Knowing your audience is imperative. With the ability to integrate your phone system with your CRM platform, building a profile of your customers from the first point of contact is a breeze.

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