Low-voltage Technology, Telecommunications
New construction and maintenance for:
- Telephone system
- Landline and mobile communications
- Fire detection technology
- Hold-Open Systems
- Access control systems
- Intrusion detection technology
- Safety systems including video technology
Advice on the use of mobile radio in the scientific areas - Terminal service
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Information sheet for the telephone system
It is a Philips Sopho S with over 12000 connections consisting of analog and digital modules.
Only the telephone and, if necessary, a voicebox are provided.
Answering machines and facsimile machines can be procured via the central purchasing department or themselves.
In case of a fault, please use the Servicebriefkasten. 
Through a public tender together with the Humbold and Freie Universität the most favorable provider was determined.
The current provider of telephony is the company Colt.
All incoming and outgoing calls go exclusively via this provider.
A preselection as in the private area is not possible.
Private and business phone charges are charged differently.
According to the circular "Einstellung der Einziehung privater Telefongebühren" of 04.08.2017, the collection of telephone charges for the private use of service telephones will cease at the beginning of the third quarter of 2017.
Service talks are billed according to the "Dienstvereinbarung über den Einsatz der Telekommunikationsanlage Sopho S von Philips Business Communications GmbH an der Technischen Universität Berlin" from 15.09.2001.