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<p class="MsoNormal">Hi Aftab,<br>
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<div>I can’t confirm if the upstream traffic is encrypted but in a GPON environment you only should concern about encryption of the downstream traffic: </div>
<div>Downstream is shared media for all subscribers connected to the splitted span (32 to 128 subscribers). Every subscriber gets all downstream traffic from the others – encryption needed.
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<div>For the upstream path the media is not shared. </div>
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<div>> It is shared media as well.<br>
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you're right. The term "shared media" is not correct in this context. I basically wanted to say that subscriber A doesn't have to worry that subscriber B-Z get its upstream signal.
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<div>You have a „dedicated“ upstream path from your ONU to NBNs OLT. The other subscribers don’t get your upstream traffic – only looking at the physics.</div>
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<div>> Its TDM to be specific. <br>
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yes. Thanks<br>
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Thomas<br>
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