Time and Frequency Transfer in an Asynchronous TCP/IP over SDH-network Utilizing Passive Listening
Paper i proceeding, 2005

SP, Swedish National Testing and Research Institute together with STUPI have developed a technique for time and frequency transfer over an asynchronous TCP/IP network. The method is based on passive listening to existing data traffic in the network. We use the frame alignment bytes of the SONET/SDH protocol used between routers as references in order to compare standards located at the routers. As a test bed for the experiment, we will use the Swedish university Computer Network (SUNET). A preliminary assessment of the technique in a lab environment will be performed in late 2005.


Ragne Emardson

Per Olof E Hedekvist

IEEE Topical meeting on Precise Time and Time Interval 2005


Elektroteknik och elektronik

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