ot: android VOIP over 3g ?

"Voytek Eymont" <[email protected]> Tue, 17 May 2011 09:20:50 +1100
Newsgroups gmane.org.user-groups.slug.chat
Message-ID <[email protected]>
is anyone using VOIP over 3G ? successfully ?

I've only had the Aphone (Atrix) a short time, and, trying to achieve a
useable SIP VOIP over 3G, with less than stellar results.

in limited testing, Skype (to PC, not landline) seems to work quite well
(but I'd rather SIP than Skype)

testing with MyNetFone, ClicknCall, Pennytel
MyNetFone client often won't register with MNF

with SIP, I have Acrobits set as follows:

3G codec preference:
g729, g711a, g711u

(not used)g727,gsm
packet time 30ms

should I try to increase the 30ms ?

WiFi codec preference:
g711a, g711u, g729
(not used)g727,gsm
packet time 20ms

on phone end, quality is fine, on remote end, it ranges from acceptable to
worse


according to speednet test, on an average, I'm getting like

3G: 7500-4500kbps, 1200-800, 80-120ms

(yesterday in Sydney CBD was way, way below that, worst I've seen:
as low as 800kbps/65kbps/78ms ping)

is speednet test a reasonable way to 'asses' 3g quality, what else to use?
Network Signal Info dbm/asu ? values?
what's minimum acceptable ?

any tips appreciated, or tell me I'm wasting my time

or do I forget SIP and just Skype ?


-- 
Voytek

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