04841 9386600 info@sys-it.de

Service Center & Technical Support



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Financing & Leasing

Leasing instead of buying

Whatever you do, leasing enables you to equip yourself optimally without unnecessarily tying up capital. Instead of paying the full acquisition costs, you pay favorable leasing installments and thus secure your equity capital and maintain your credit flexibility with your house bank or your suppliers. Thanks to the constant installments, which – pay as you earn – are only due when you are already generating sales with the leased objects, you also gain planning-security. GRENKE offers leasing for products starting at a net purchase price of 500 Euros. This means that even small and medium-sized companies always stay up to date.

All-in. IT financing including service

Until now, financing the hardware was one aspect, but the service was another. However, in modern IT financing, the service is included. How does that work? With All-in – the innovative rental model from GRENKE.

When you decide on IT or telecommunications equipment – servers, networks, PCs, or telephone systems, etc. – we agree with you, the customer, on a service level tailored to your needs. GRENKE calculates a share for both the equipment financing and the service in the monthly basic product rent. You pay only one total rate for both service components.

We would be happy to submit a leasing or all-in rental offer to you – just contact us.

Telekom Service Hotline

For private clients

Sales and consultation, 0800 330 10 00
Ordering, transition toTelekom, 0800 330 30 00
Building owners, 0800 33 01903

For business clients

Business clients hotline (landline network, Internet, TV), 0800 330 13 00 (free of charge)

For companies

Landline network
Distribution (consultation, appointments), 0800 33 05400
Mo. – Th. 08:00 am – 18:00 pm, Fr. 08:00 am – 16:00 pm

Customer service (requests, complaints, invoices), 0800 33 05401
Mo. – Fr. 08:00 am – 19:00 pm, Sa. 08:00 am – 15:00 pm

Technical service(malfunction information), 0800 330 2870
24-hours-service / Mo. – Su. 00:00 am – 24:00 pm

Online customer services


The right partner on-site

As an authorized sales and service partner of Lan1, Mitel, Konftel, and Telekom, we have the right solution for you.

Contact us

Get answers to your questions before you make decisions. Talk to us and benefit from our experience.

Call us

Talk to us directly and get answers to all your questions! We will be happy to help you.

+49 4841 938 660-0