Archived from groups: comp.dcom.voice-over-ip (
More info?)
mazza <cmazzali@libero.it> wrote:
> The only device that can work over satellite is Innovaphone, but you
> need to know the exactly delay between the end point. Over satellite
> there is a bad delay and a bad jitter for VoIP so you have to buy only
> some satellite connection. It's very different from DSLsetup.
> Innovaphone have the best jitter buffer that I know.
I'm using a Sipura 1001 with the jitter buffer set to "high" and it's
serviceable over this satellite link (though the lag is inevitably awful):
PING www.broadvoice.com (147.135.0.5): 56 data bytes
64 bytes from 147.135.0.5: icmp_seq=0 ttl=105 time=1240.04 ms
64 bytes from 147.135.0.5: icmp_seq=1 ttl=105 time=1171.79 ms
64 bytes from 147.135.0.5: icmp_seq=2 ttl=105 time=1103.85 ms
64 bytes from 147.135.0.5: icmp_seq=3 ttl=105 time=1035.42 ms
64 bytes from 147.135.0.5: icmp_seq=4 ttl=105 time=1277.95 ms
64 bytes from 147.135.0.5: icmp_seq=5 ttl=105 time=1215.61 ms
64 bytes from 147.135.0.5: icmp_seq=6 ttl=105 time=1147.57 ms
64 bytes from 147.135.0.5: icmp_seq=7 ttl=105 time=1263.77 ms
64 bytes from 147.135.0.5: icmp_seq=8 ttl=105 time=1506.29 ms
^C
--- www.broadvoice.com ping statistics ---
10 packets transmitted, 9 packets received, 10% packet loss
round-trip min/avg/max = 1035.42/1218.03/1506.29 ms
Packet RTTs even in this small sample varied by 50%, an absolute amount of
500ms.
miguel
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