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raytaylor

join:2009-07-28
kudos:1
reply to palock34

Re: [Fixed] WISP latency causing poor voip call quality

4x 64kbit voip streams should easily fit into the 1mbit upload.

I would ask if the WISP is using TDMA. If not, then voip probably wouldnt work over the connection when the tower is under a small amount of load and I would suggest giving up now.

If they do use TDMA then you will want to look into your jitter.
Linksys voip phones have an adjustable jitter buffer - i just set mine to "extremely high" and it can move "up only", rather than "up and down" and it works fine.

90ms isnt really a problem. 500ms+ will be noticable as a small delay when talking - like watching a live news reporter being interviewed by the studio host via satelite link. But the stream should still be constant and work fine if the jitter buffer is working.