What is SyncE?

When the telephone networks started to go digital in the 1960s, the voice sampling frequency was carried in the physical layer of the multiplexed digital voice signal. This frequency was transported across the network so that all voice switches could operate at the same frequency, as any mismatch would cause clicks and pops in the voice channel.

Packet networks technologies such as Ethernet also have a physical layer signal that carries the timing of the individual bits. However, in Ethernet that’s where it stopped – it was purely a point-to-point bit clock, and was only intended to allow the bits to be accurately transferred from one device to another.

Synchronous Ethernet (SyncE) uses that physical timing signal to carry an accurate frequency as well. That way a chain of SyncE-enabled Ethernet switches can distribute a frequency from one side of a network to the other. This is more accurate than trying to carry frequency at the packet level, because it is immune to packet delay variation. SyncE is commonly used to provide frequency synchronisation in networks, and in particular to provide an accurate reference frequency to mobile basestations.

Tim Frost
Strategic Technology Manager, Calnex Solutions.

Recent Blogs

Six New Clocks for…

Jan 17, 2019
1116 More
Ultima Thule

New Year, New…

Jan 07, 2019
461 More

A Better Way to…

Dec 18, 2018
1506 More

Large USA Bank…

Nov 29, 2018
941 More

Low Risk and High…

Nov 06, 2018
756 More

What's Coming in…

Oct 17, 2018
480 More

What’s All This…

Oct 16, 2018
934 More

Latency in a Data…

Oct 03, 2018
2261 More

Testing Sync in…

Aug 14, 2018
651 More

Mobile Backhaul…

Aug 06, 2018
561 More

Related Blogs

banana skin

Will SD-WAN really be the savior?

Mar 13, 2019
The only way to prove it is to get validation on how it will perform against your needs…
866 Read more
Four Boardroom Members

How to Optimise Your IT Network and Spend

Feb 06, 2019
Network emulation can be a key tool to overcome barriers in getting the most out of your…
1732 Read more

Responding to IT Network Issues

Jan 22, 2019
If simple remedial scripts are not enough to fix an IT network issue, a more…
3127 Read more

Archived Blogs

Timing not Telecoms

Nov 08, 2016
397 More

5G Coming Soon

Aug 22, 2016
402 More

What is 1588 PTP?

Aug 04, 2016
496 More

5G on the Horizon

Aug 01, 2016
411 More
443 More

What is a PTP Clock?

Apr 09, 2016
504 More

What is Time Error?

Oct 21, 2015
419 More

LTE-A & VoLTE Rollout

Sep 22, 2015
398 More

LTE Picks Up Speed

Aug 22, 2015
397 More

What is the Time?

Aug 22, 2015
396 More

Mobile and Sync

Aug 22, 2015
388 More
432 More

Microwave Update

Aug 22, 2015
428 More

Unravelling Standards

Aug 22, 2015
424 More

Partial Progress?

Aug 22, 2015
400 More

Interpreting ITU

Aug 22, 2015
398 More

Confusion Rules!

Aug 22, 2015
395 More

Basestations Need Sync

Aug 22, 2015
411 More

ITSF 2015 Edinburgh

Aug 22, 2015
392 More

India to Follow China?

Aug 07, 2015
394 More
HOW CAN CALNEX HELP YOU FURTHER?

Click your area of interest below for more tutorials and real-world case studies.