Gvoice Call Quality Issues - Requesting Help to Resolve

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Dan-Voip:
Phone - OBi1032
Firmware - 5.0.0 (Build: 2486)
Connection - WiFi
Status   ConnectedWPA PSK Strength   Good Speed   150 Mb/s Address   192.168.7.49VoIP Provider - Gvoice
Problem - Garbled communications (both sides of the call) that can last for 1 to 45 seconds.  The longer  the call the longer the disruption seems to last.

Below are stats at 5 and 10 minutes during a call with the problem.  (Called number and internet IP masked  :D ).


image upload free

Any advice what to check or change would be greatly appreciated.

SteveInWA:
My bet is that it's the WiFi connection.  "150Mbps" is meaningless -- it's the theoretical maximum connection rate.  You may be experiencing periodic signal dropout or degradation issues.  I'd start by (at least temporarily) using an Ethernet cable instead, to test this theory.

Dan-Voip:
SteveInWA I fear your correct.  Unfortunately there isn't any way to get a wired connection to my phone :(. 

SteveInWA:
Unfortunately, VoIP technology was designed before WiFi, and the older CODECs, such as the higher-bandwidth G.711 CODEC used by Google Chat (the XMPP service used by OBi devices) are particularly susceptible to audio problems caused by even brief dropouts or retries on WiFi connections.  These issues would normally not be noticed when surfing the web or even when watching a video or listening to music, because those streams aren't happening in real time, and they are buffered.  VoIP calls have a very small buffer -- if a larger buffer was used, it would cause unacceptable levels of latency.

The new-generation real-time audio and video communication systems will eventually mitigate this problem by using more modern CODECs that are rate-adaptive and more tolerant to signal quality issues.  For example, Google Hangouts supports the "HD Voice" adaptive multi-rate, wideband codecs, and will eventually inter-operate with similar technology used by the mobile phone carriers.

You didn't describe your network's topology, but if you can add a wireless network repeater or newer/better access point, you may be able to solve your problem.

TonyTib:
Dan, is it possible you could use power line networking?
My situation: WiMax modem upstairs right by a window for Internet access, then a power line network connection (over the house's AC power lines) to the kitchen, where it's connected to my Obi 202 and another WiFi router.  Power line networking isn't perfect, but it can be very helpful.

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