liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Synchronization of POTS Systems Connected over Ethernet
Linköping University, Department of Electrical Engineering.
2005 (English)Independent thesis Basic level (professional degree), 20 points / 30 hpStudent thesis
Abstract [en]

POTS (Plain Old Telephony Service) systems have traditionally been connected via synchronous connections. When installing new nodes in the telephone network, they may sometimes be connected via packet networks such as Ethernet. Ethernet is an asynchronous network which means that nodes connected to the network don’t have access to the same clock frequency if it is not provided in some other way. If two nodes have different clock frequency, the receiver’s buffer will eventually overflow or starve. While not being a severe problem for telephony, devices used for data transmission, e.g. modems and fax will not be able to function properly. To avoid this it is necessary to synchronize the nodes.

This thesis investigates methods to synchronize nodes connected over Ethernet by simulating them in Matlab. The simulations show that under certain circumstances it is possible to produce a clock signal conforming to relevant standards.

Place, publisher, year, edition, pages
Institutionen för systemteknik , 2005. , 79 p.
Keyword [en]
Synchronization, phase-locked loops, clock recovery, telephony over IP
National Category
URN: urn:nbn:se:liu:diva-3764ISRN: LITH-ISY-EX--05/3666--SEOAI: diva2:20445
Available from: 2005-10-20 Created: 2005-10-20

Open Access in DiVA

fulltext(1018 kB)792 downloads
File information
File name FULLTEXT01.pdfFile size 1018 kBChecksum SHA-1
Type fulltextMimetype application/pdf

By organisation
Department of Electrical Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 792 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 1572 hits
ReferencesLink to record
Permanent link

Direct link