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Re: [rtcweb] RTP Usage: Is RTP Retransmission REQUIRED or RECOMMENDED

"Fabio Pietrosanti (naif)" <lists@infosecurity.ch> Wed, 27 June 2012 21:11 UTC

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Date: Wed, 27 Jun 2012 23:11:29 +0200
From: "Fabio Pietrosanti (naif)" <lists@infosecurity.ch>
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To: Cameron Byrne <cb.list6@gmail.com>
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Cc: rtcweb@ietf.org, Colin Perkins <csp@csperkins.org>
Subject: Re: [rtcweb] RTP Usage: Is RTP Retransmission REQUIRED or RECOMMENDED
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On 6/27/12 10:54 PM, Cameron Byrne wrote:
>> You are saying that in EDGE, UMTS, HSDPA when an IP stack send an UDP
>> packet, it will handled from L2 like in the old age of GSM CSD and be
>> automatically retransmitted?
>>
> 
> Yes. LTE too.

I read (by googling cause i don't have LTE access) that also LTE uses
for IPTV and all other IP streaming applications the UM_RLC
(unacknowledged mode).

So also LTE should not do retransmission, unless being set in AM_RLC
(acknowledged mode).

Fabio

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