<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>CRTP works by compressing the IP and UDP headers. That means it cannot be used over mobile networks.</div><div><br></div><div>The audio is already compressed so cannot be compressed further - RTP is as light as you can get while still being routable via the Internet.</div><div><br></div><div>You should compare the different codec options. There is a large difference in the bandwidth use of different codecs. Eg compare G711 vs GSM, CELT, Speex etc.</div><div><br></div><div>Other advice: Increasing the ptime will fit a longer period of time into a single packet so reduce the IP/UDP/RTP header overhead. Also increasing the jitter buffer length may help compensate for the heavy jitter you may see on a mobile connection.<br><br>Steve</div><div><br></div><div><br></div><div><br>On 22 Feb 2013, at 03:44, ZhouJianhua <<a href="mailto:jh.zhou@outlook.com">jh.zhou@outlook.com</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<div dir="ltr">RTP's head is too heavy for mobile network. There is little about CRTP on google, anyone use it?<div><br></div> </div>
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