Flexible and scalable telephone systems

Your telephone system connects a wide variety of devices such as telephones, headsets, fax machines, answering machines, computers and even door intercoms and door openers. With a telephone system, you can use multiple phone numbers and multiple devices simultaneously and make free internal calls via your company's own network. 

In addition, telephone systems offer further functionalities such as:

• Distribute calls based on rules or forward them from one telephone to another.
• Forward calls to defined groups of telephones.
• Set up conference calls.
• Record missed calls (answering machine or voicemail).

Telephone systems are also referred to as telecommunications systems or private branch exchanges and are connected to our IP network. There are various types of telephone systems:

• Traditional ISDN telephone systems
• Modern IP telephone systems (stationary or cloud-based)
• Hybrid telephone systems for a smooth transition from analogue telephone systems to VoIP systems

You can find more information on the subject of telephone systems in our guide article "Success".

A router organises and optimises communication between devices in your company network and with the internet. It controls data traffic in your computer network, connects your local network to the internet and ensures that the internet connection works quickly, securely and efficiently. It assigns IP addresses, enables internet connection sharing and protects the network from external threats.

The router enables your employees to communicate with each other, exchange files and access shared resources. It connects to the internet so that your employees can access information, conduct research and contact customers or partners around the world.

A telephone system, on the other hand, is a specialised communications system for managing telephone calls within an organisation. It establishes connections between internal telephones, enables conference calls, call forwarding and distribution, group functions, queues, voicemail, call directories and other telephony functions. 

Both routers and telephone systems are tools for managing communication. Routers enable access to the internet and control data traffic, while telephone systems manage telephone calls and functions. In modern environments, routers and telephone systems are often integrated to implement IP telephony (VoIP). This combination is often referred to as unified communication. 

With our digitalisation boxes, we offer you all-in-one business solutions that conveniently and affordably combine the functionalities of routers and telephone systems in a single device.

In many cases, it is possible to continue using an existing ISDN telephone system with a VoIP connection.

In most cases, however, it makes more sense to replace the existing ISDN telephone system with a modern VoIP telephone system and take full advantage of the benefits of modern IP technology.

In both cases, we recommend our SIP Trunk tariff, which allows you to use both existing IP-based telephone systems and ISDN telephone systems.

With a VoIP telephone system, you can make calls from any location via an IP connection. Depending on your individual needs, you can use cordless or corded IP telephones or your PC directly, e.g. with high-quality headsets. You can make calls conveniently and wirelessly via Bluetooth.

The modern transmission method gives you high connection speeds and voice quality. The key advantage of VoIP telephone systems is their wide range of functions and flexible configuration options. Business applications can be integrated more easily into VoIP systems, allowing you to optimise your existing IT infrastructure.

One disadvantage of switching to IP technology is the necessary investment and depreciation over the useful life. Your expenses will vary depending on whether you opt for a stationary, cloud-based or hosted telephone system.

VoIP telephone systems are operated very efficiently as cloud solutions, such as with our Cloud PBX 2.0 tariff. 

Small and medium-sized enterprises (SMEs) in particular benefit from this type of cloud-based telephone system, as do call centre operators, hotels and hospitals. Improved communication helps you remain competitive, while avoiding the need to install expensive hardware and paying only for the features you really need.

To ensure that the new communications infrastructure in your company is set up successfully, you should first check that the necessary conditions are in place. A stable internet connection with sufficient bandwidth (e.g. DSL or fibre) forms the basis for a VoIP connection. You will then need the services of a SIP provider who can supply you with internet telephony services. End devices such as PCs, smartphones and telephones must also be VoIP-compatible. Naturally, you will need one or more telephone numbers.

You can decide whether you want to keep your existing number or order a new one, and coordinate this with your provider. If you choose one of our 0 tariffs with a (cloud) telephone system as your new telephone system solution, simply indicate when completing your order that you would like to keep your existing numbers.