Packet Loss in Qatar
jtmarcot:
My fiber setup has a router (Linksys EA2700) bridged to a gateway device (Huawei HG8247). The Huawei manages the PPPOE and router duties, and I can't change much of anything on this device - even with the admin password.
I've tried the Obi plugged directly to the Huawei, bypassing the Linksys middle man - but, as expected, there was no improvement.
I have absolutely no trouble with skype, even with video. I know it's apples and oranges, but it is frustrating.
Shale:
Quote from: jtmarcot on May 21, 2013, 11:36:38 pm
I've tried the Obi plugged directly to the Huawei, bypassing the Linksys middle man - but, as expected, there was no improvement.
I have absolutely no trouble with skype, even with video. I know it's apples and oranges, but it is frustrating.
That is interesting. There are boxes that perform a function similar to OBi but for Skype calls.
It is also possible that a lower bit-rate codec would help. The reason I have hope this would help is that this document concludes that a lower bit-rate codec may make better use of a fixed size jitter buffer at each receiving end: http://ice-voip-system.googlecode.com/svn-history/r110/trunk/doc/praca_mgr-zrodla/t06099.pdf
Obi supports these codecs: G.711, G.726, G.729 and iLBC (OBi202/OBi302 only)
If you had the Anveo Starter plan (which you probably do not), I would do next is to make test calls through Anveo. Before dialing the rest of the digits, start with *4729 before dialing the rest of the digits. If that helps, then you could change settings in the OBi to change the priority of which codec gets selected for a given service provider.
Anveo Supported codecs:
All Subscription Plans:G.711 ulaw (PCMu), GSM
Premium Plans (Starter and up): G.722, G.729.
The Starter plan would add $7.85/mo paid monthly. Maybe trying starter for a month to test using the G.729 codec would be worthwhile. Maybe it would not. Maybe you could do online chat with them and they could offer some testing help. Alternatively you might find a different SIP provider that supports the G.729 codec or the GSM codec. http://www.dslreports.com/forum/r27436448-Free-SIP-account-that-support-TCP-and-G729-
This is from the OBi Admin guide if you do testing:
*4711 = Use G711 Only on the next outbound call
*4729 = Use G729 Only on the next outbound call
I understand the frustration.
jtmarcot:
Thanks, again, Shale.
So, I've tested G729 on Anveo and it works. No packets dropping, and clear audio both ways. Happy. ;D
G729 does require me being on the starter plan, but support tells me that GSM is also available on their network (I believe on the value plan). Does the Obi110 support GSM?
Lastly, I've tried hooking an IPKall line through so I can keep my Google Voice number going. I've made it through registration on IPKall, and the setup on GV. Unfortunately, though, the call doesn't make it through when I've got mismatched codecs. It looks as if Anveo isn't converting G711 to G729, and the call falls over because of it. Are there any workarounds for this? Or, any providers out there that will do that conversion? I fear I may have to look at hosted asterisk for that (in which case I've got a bit of learning to do).
Shale:
Very interesting findings.
No Obi supports GSM unless that has been added since the admin guide was made.
I don't know about the IPKall thing.
Regarding your GV number, you could set GV up to transfer all calls to a US or Canadian Anveo number temporarily. I think you can even have a call ring both the GV and Anveo numbers, and have the first to pick up take the call. If they both rang onto the OBi110, I don't know how you select which call to answer, but there is probably a way. On an OBi202 you could have separate phones or a 2-line phone for the two services. Having GV not ring both services on your 110 would probably be the simpler choice.
jtmarcot:
Thanks, Shale. I figured about the GSM.
Regarding IPKall, I fear I might have the same issue with an Anveo DID. I would still be forwarding a G711 codec from GV to an Anveo number expecting G729.
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