I often use my HSPA connection to ssh into my machine(s) at home. To make this usable, I need to keep a ping running in the background to keep it running at HSDPA speeds, and not falling back to WCDMA. I do this because the round trip latency on WCDMA is about 500ms which is too high to use an interactive session. I have a ping interval of 1.2 seconds.
Here's an example of the ping output when a hickup occurs:
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64 bytes from 220.233.XXX.XXX: icmp_seq=48 ttl=63 time=156 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=49 ttl=63 time=154 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=50 ttl=63 time=163 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=51 ttl=63 time=161 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=52 ttl=63 time=8252 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=53 ttl=63 time=7119 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=54 ttl=63 time=5910 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=55 ttl=63 time=4711 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=56 ttl=63 time=3512 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=57 ttl=63 time=2302 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=58 ttl=63 time=1099 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=59 ttl=63 time=149 ms
64 bytes from 220.233.XXX.XXX: icmp_seq=60 ttl=63 time=168 ms
The pattern is quite variable. At the moment, I am getting about 1 hickup a minute for about 6 seconds or so each hickup. Other times it is much worse with continual 20 second hickups.
I am using an E169 on a linux netbook, from South Melbourne, during business hours.
I suspect there must be something wrong that can be fixed, since it is meant to be possible to do VoIP over HSPA, but with the hickups I'm getting, there's no way you'd get acceptable calls.
Is there something I can do at my end, or should I just raise a ticket?