Don't upgrade to DIR-655 latest firmware version 1.20 if you use VoIP. I upgraded and I couldn't use 75% of the VoIP services I use and the one that worked were unreliable, had very bad call quality and would take 40x longer to register. After 24 hours I downgraded back to 1.11 and the issue went away immediately. Note that I had this issue from both my PC using X-Path and a Linksys Sipura device going to 4 different providers, What is strange is that the Sipura would eventually log in to one provider overseas but my PC couldn't to the same, nor Gizmo would work among others. After the downgrade everything is back to normal.... Well, plus the fact I have to reboot my router every night or after 3-7 days the SIP quality degrades too much, very weird. I was hoping some improvements with the new firmware but no, no luck.
In case you wonder, it isn't an issue with my connection, I have 6 Mb / 1 Mb with a quality of service of 97-99% as measured by visualware's myspeed voip http://myspeed.visualware.com/voip/index.html
The phone has 256MB of RAM and a 1GHz processor, which do the job reasonably well, though the Anna interface will likely leave something to be desired for many smartphone users.
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Don't upgrade to DIR-655 latest firmware version 1.20 if you use VoIP. I upgraded and I couldn't use 75% of the VoIP services I use and the one that worked were unreliable, had very bad call quality and would take 40x longer to register. After 24 hours I downgraded back to 1.11 and the issue went away immediately. Note that I had this issue from both my PC using X-Path and a Linksys Sipura device going to 4 different providers, What is strange is that the Sipura would eventually log in to one provider overseas but my PC couldn't to the same, nor Gizmo would work among others. After the downgrade everything is back to normal.... Well, plus the fact I have to reboot my router every night or after 3-7 days the SIP quality degrades too much, very weird. I was hoping some improvements with the new firmware but no, no luck.
In case you wonder, it isn't an issue with my connection, I have 6 Mb / 1 Mb with a quality of service of 97-99% as measured by visualware's myspeed voip http://myspeed.visualware.com/voip/index.html