Telephone sets and radio telephones at ETH

TDM terminals are the older devices on a digital or analog basis. (no VoIP terminals) These devices are only used sporadically and in impersonal places. (Corridor, elevator, laboratory etc.)

As part of the telephony replacement project, these will be migrated on an ongoing basis wherever possible.


OptiPoint 500

User Guide (German)

(info) Call forwarding must be made directly on the telephone


OpenStage 15 (EOL)

Quick User Guide

User Guide

(info) Call forwarding must be made directly on the telephone


OpenStage 5 (EOL)

User Guide (German)

(info) Call forwarding must be made directly on the telephone


OpenStage WL3 (EOL)

User Guide

(info) Call forwarding must be made directly on the telephone

EOL: Will no longer be delivered


When forwarding to an external phone number, an additional "0" must be prefixed. Ex: 0079 123 45 67