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Extension Number

Extension Number

What is an Extension Number?

In the world of business telephony, an extension number refers to an internal telephone line (and it’s phone number) assigned to a terminal (endpoint) that is connected to the phone system or PBX (Private Branch Exchange) and allows for the communication between internal users with the minimum of fuss and a no or low cost.

To keep things clear and simple, at pascom we refer to this number as a user’s internal extension number.

Since the VoIP, the IP PBX and cloud communications have become mainstream for businesses worldwide, calling internal user extension numbers is normally free and therefore greatly reduces telephony costs, particularly for organisations that have multiple locations. All internal users need to do is dial the interal externsion number of the party they wish to call and the call is then transmitted via the IP network (i.e. company Intranet or the Internet).

Thanks to VoIP, it is even possible to connect remote workers and their telephones and configure these telephones to appear as it they are part of the phone system and to make and receive calls using their extension number. This set up is often referred to as an off-premises extension and refers to the device itself as opposed to the internal extension number. However, this practice is no longer very common and thanks to desktop and mobile VoIP and UCC apps, not really needed any more.

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Philipp Meixner, CEO
As a communications agency with just under 20 employees, the pascom phone system is perfect for us. The technical concept simply functions, which is what you want. The service is exceptional and always accessible (even if it is rarely needed) and as one of the agency’s business partners, we can only recommend pascom: open, straightforward, pleasant to work with - great. Thank you pascom!

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Stephan Förderung, CEO
We chose pascom because their phone systems offer a sleek, easy-to-use UC client and administration UI whilst providing us with all the PBX and UC features, control and visibility that we could need from our business communications solution. As a result of our excellent experience, we are happy to recommend pascom phone systems to all our customers.

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Lars Hoeger, IT Director
When we make decisions regarding new systems, we want to make sure that we have both reins firmly in our hands. Therefore, it is essential to implement systems which adhere to OpenStandards, allowing us to seamlessly connect and integrate these into our existing systems. In addition, we require reliable suppliers, who are ready to customise their solutions to our requirements, which is why we chose pascom who offer exactly this service and more.

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Kassandra Martin, Deputy Director & Reception Manager
We chose pascom as our telephony solution in part due to the scalability, flexibility and ease of deployment. In addition, the pascom platform functions perfectly with our digital guest directories in our rooms whilst offering the largest range of features at easily the most cost effective price compared to alternative solutions. A further deciding factor was the wide choice of compatible hardware that choosing pascom afforded us.

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Wake & Camp Ruhlsdorf

Markus Gerlitzki, Managing Director
My team and I pride ourselves on the level of excellent care we provide our guests. However, it can be distracting when the phone is always ringing and we constantly answer the same questions. Thanks to the pascom phone system, we have been able to set up an automated attendant self-service hotline which allows guests to quickly get answers and if required callers can be quickly and efficiently routed to an employee. The system greatly improves customer service with around-the-clock answers around opening times and courses and therefore reduces the strain on employees, ensuring we are free to cater to the needs of our on-site guests.

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