Afternoon,
Wireless connections fluctuate substantially in comparison to a fixed line. 
VOIP requires minimal fluctuation, hence why providers suggest one utilises 
QOS, and iiNet modems are actually preset to do this. 
Remember also that ADSL for most people in Australia is very unstable due to 
distances from exchange hence the discrepancies within download speed and 
ping/traceroute tests to provider. 
Problems with VOIP can be improved with small changes to your settings via 
codecs, and some others could improve situation. But, as some have already 
stated works great for awhile then goes south. 
This is due to climactic conditions, providers adding more users to exchange, 
and overall network, as well as software, and equipment upgrades. 
The major reasoning behind 95% of this is we are still operating on 
copper-wire, hence Federal Government rollout. Something that should have been 
done years ago, as with most infrastructure under a Liberal government; access 
KISS policy, whilst remembering if it works why touch it. 

VOIP for those businesses on Fibre or multiline HDSL connections work as good 
if not better than PSTN especially in relation to conference and video calls. 
Surprising to some is mobile phone towers are a VOIP connection back to an 
exchange?

Cheers!
`RobD...

On 16Jul2010, at 7:02 am, KEVIN Lock wrote:

> 
> We are connected through vividwireless 'home gateway'.  Speeds are good, but 
> the VOIP phone is lousy.
> 
> I have talked with their Tech people a number of times, but the adjustments 
> to settings has not improved the reception which ranges from very bad echoes 
> to scratchy fading out volumes.  The problems are inconsistent ....sometimes 
> there are echoes, sometimes other problems.
> 
> I am thinking of going back to Teltra landline where at least the quality is 
> consistently good and using Skype for long distance calls. The Skype phone 
> calls are much better than VOIP through vividwireless.
> 
> I have tried several different phones on the Gateway.
> 
> Am I missing something here?
> 
> Intel iMac, plenty of RAM
> 
> regards
> 
> Kev
> 
> 
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