These phones have great options, sound quality, etc. But depending on what service or PBX/Server you're running be aware of the REV and what Device Certificates are installed. Versions of hte phone prior to REV H (I believe) DO NOT have a factory installed certificate. If you are using 8X8 and maybe some other hosted VOIP vendors, be aware that they REQUIRE the factory installed Cert.
Verified purchase: Yes | Condition: Pre-owned
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