I regularly use my VoIP phone for conference calls. I recently purchased, and am trying to use, an Obi1062 phone but get audio dropouts on long calls. I haven't kept a record, but the last dropped audio happened at about 30 minutes on my last two calls. The dropouts last under a minute but are very annoying. This occurs both when using Google Voice as well as a SIP account I have set up to a local Asterisk server. My previous Cisco phone has no problem connecting through the same Asterisk server. I'm running the latest version of firmware 5.0.6(4346EX.1311). Is this a known issue and is there a workaround, or is it possibly faulty hardware?