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Anyone using SIP calling on the MT?

F

foobarX

Newbie
Are you using GrooveIP? (not sure if it is working well on Froyo)


Anyone know if the bandwidth after the BeyondTalk300 throttling goes into effect (over 2.5GB) is enough to still make SIP calls?


I'm not a power talker, so I usually don't use up my 5 hours, but I like to have as many options as possible if that comes up.
 
foobarX said:
Anyone know if the bandwidth after the BeyondTalk300 throttling goes into effect (over 2.5GB) is enough to still make SIP calls?
Click to expand...
The throttling doesn't start until October. But, since it goes down to dial-up speeds, my guess is it will be too slow.
 
I am using Sipdroid with Google Voice. The quality is horrible over 3G. However, I've had good luck with it over wifi.
 
I installed CSS \ inbound voip is a little garbled. Moto Triumph is connect to an Asterisk server. A linksys spa2102 is wired into the asterisk server and sound is perfect. Therefore the problem lies somewhere between the wifi of the router => Moto Handset => CSS.

Dont' know if it is CSS \ Moto Triumph or the combo of the two. I wonder if the wifi in the triumphs is borked any way to test?

Suggestions to isolate the problem to the wifi, Moto or CSS.
 
foobarX said:
Are you using GrooveIP? (not sure if it is working well on Froyo)


Anyone know if the bandwidth after the BeyondTalk300 throttling goes into effect (over 2.5GB) is enough to still make SIP calls?


I'm not a power talker, so I usually don't use up my 5 hours, but I like to have as many options as possible if that comes up.
Click to expand...

Groove IP uses Google Voice's only available codec, which takes about 120 kbps at most (may even be only 64kbps). Other SIP programs can have even more efficient codecs using as little as 11 kbps for voice. So I don't think you'd have to worry. Last I read was VM's throttled speed is still 200 kbps (dialup is 56kbps, but with worse latency) network latency and jitter messes with VoiP more than bandwidth throughput, which explains a lot of current problems with VoiP on VM's 3G network, before throttling matters. Wifi usually works pretty reliably for me when I tested it.
 
G.729 codec should use around 24 kbit per call.
G.711 is higher quality but will use around 80 kbit per call.

The latency over cellular networks may cause significant degradation of voice quality.
 
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