# PTP 550  Webinar

**URL:** <https://community.cambiumnetworks.com/t/ptp-550-webinar/53370>\
**Category:** PTP\
**Tags:** webinar\
**Created:** [October 17, 2017, 7:59pm UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370 "2017-10-17T19:59:11Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![RayS](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/rays/32/11680_2.png) [@RayS](https://community.cambiumnetworks.com/u/RayS)\
**Post date:** [October 17, 2017, 7:59pm UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/1 "2017-10-17T19:59:11Z")

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The PTP 550 webinar is here. Please post your questions and comments to this thread.

[https://www.youtube.com/watch?v=k2og6gijhm4](https://www.youtube.com/watch?v=k2og6gijhm4)

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**Author:** ![Sam\_Taiwan](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/s/258eb7/32.png) [@Sam\_Taiwan](https://community.cambiumnetworks.com/u/Sam_Taiwan)\
**Post date:** [October 19, 2017, 3:55am UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/2 "2017-10-19T03:55:40Z")

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How the 2 different channels sync each other? Especially, when they have different latency.

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**Author:** ![Eric\_Ozrelic](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/eric_ozrelic/32/16188_2.png) [@Eric\_Ozrelic](https://community.cambiumnetworks.com/u/Eric_Ozrelic)\
**Post date:** [October 19, 2017, 4:11am UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/3 "2017-10-19T04:11:51Z")

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> * * *
> [@Sam\_Taiwan](https://community.cambiumnetworks.com/u/Sam_Taiwan/summary) wrote:  
> 
> How the 2 different channels sync each other? Especially, when they have different latency.
> 
> * * *

GPS sync has nothing to do really with different radios having different latency or jitter, and has everything to do with frame size and timing (although different frame sizes can have different latency).

See [THIS](https://community.cambiumnetworks.com/t/epmp-gps-synchronization/39470) forum post on how GPS sync works. NOTE although it's written for ePMP, the underlying theory applies to all radios that use TDD sync.

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**Author:** ![Sam\_Taiwan](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/s/258eb7/32.png) [@Sam\_Taiwan](https://community.cambiumnetworks.com/u/Sam_Taiwan)\
**Post date:** [October 19, 2017, 4:44am UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/4 "2017-10-19T04:44:33Z")

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My question maybe not clear enough.

What I mean "2 different channels" are the bonding channels in the same PTP550.&nbsp;

Same source and same distance with different latency.

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**Author:** ![Eric\_Ozrelic](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/eric_ozrelic/32/16188_2.png) [@Eric\_Ozrelic](https://community.cambiumnetworks.com/u/Eric_Ozrelic)\
**Post date:** [October 19, 2017, 5:42am UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/5 "2017-10-19T05:42:07Z")

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I guess I still don’t understand your question. Are you asking how the PTP550 can use two different sized channel widths and still allow for GPS sync? If yes, then the answer is basically the same, the channel width isn’t really important for GPS sync, the frame ratio and frame size are most important. As long as these match amongst collocated radios, sync will work.

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**Author:** ![Sam\_Taiwan](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/s/258eb7/32.png) [@Sam\_Taiwan](https://community.cambiumnetworks.com/u/Sam_Taiwan)\
**Post date:** [October 20, 2017, 10:08am UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/6 "2017-10-20T10:08:25Z")

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Thanks Eric, very clear answer for GPS sync.  
I will test my question once get the equipment, and ask again if I still face any problem.  
Thanks again.

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**Author:** ![MikeMGR](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@MikeMGR](https://community.cambiumnetworks.com/u/MikeMGR)\
**Post date:** [April 24, 2018, 5:58am UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/7 "2018-04-24T05:58:57Z")

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_Does it have the Dynamic_&nbsp;Interference&nbsp;_Filtering?_

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**Author:** ![sagargdeshpande](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/s/13edae/32.png) [@sagargdeshpande](https://community.cambiumnetworks.com/u/sagargdeshpande)\
**Post date:** [April 24, 2018, 8:34pm UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/8 "2018-04-24T20:34:10Z")

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Hi Mike,

PTP 550 does not have dynamic filtering like PTP 450i

Thanks

Sagar

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**Author:** ![Jeevajazz](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/j/cc9497/32.png) [@Jeevajazz](https://community.cambiumnetworks.com/u/Jeevajazz)\
**Post date:** [September 16, 2018, 2:08pm UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/9 "2018-09-16T14:08:26Z")

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Hi sir can you share any future webinar link…

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**Author:** ![sagargdeshpande](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/s/13edae/32.png) [@sagargdeshpande](https://community.cambiumnetworks.com/u/sagargdeshpande)\
**Post date:** [September 17, 2018, 12:11pm UTC](https://community.cambiumnetworks.com/t/ptp-550-webinar/53370/10 "2018-09-17T12:11:33Z")

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Hi JeevaJazz,

All future webinar are either available on Community or Cambium youtube page :

[https://www.youtube.com/user/CambiumNetworksLtd](https://www.youtube.com/user/CambiumNetworksLtd)

Thanks

Sagar