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Digital line multiplexer

DELTAMUX was a European standard (EUROCOM) that allowed digital switches from a variety of countries and manufacturers to talk to each other. Each DELTAMUX unit allowed 16, 32 or 64 subscriber lines of 16 or 32 kbit/s to be multiplexed into a 256, 512 or 1024 kbit/s bit-stream. Mobile DELTAMUX unit were also developed for the communication trucks.

The unit shown here was manufactured by Philips Telecommunicatie Industrie (Philips Telecom) in Huizen (Netherlands) as part of the ZODIAC integrated communications system.

It was used by the Department of Defence (DoD) of The Netherlands and some other countries (e.g. Greece), and was often built into large communication vehicles, where it was used alongside the MUCOLEX encryption devices.
Philips 8TR611 DELTAMUX unit

Help required
At present we have no further information about the Deltamux unit shown above. If you have any information, please contact us. We are also looking for the accompanying MUCOLEX encryption device. The above DELTAMUX unit was found in a Dutch surplus store in 2011. Apparently the store also had a number of MUCOLEX units for sale, but these had already been sold. If you know a MUCOLEX unit that is available, please contact us.

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Crypto Museum. Last changed: Sunday, 01 January 2012 - 15:30 CET.
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