User's Manual



GNU GPL INFORMATION
YealinkW52Pfirmwarecontainsthird‐partysoftwareundertheGNUGeneralPublicLicense(GPL).Yealinkusessoftware
underthespecifictermsoftheGPL.PleaserefertotheGPLfortheexacttermsandconditionsofthelicense.
TheoriginalGPLlicense,sourcecodeofcomponentslicensedunderGPLandused
inYealinkproductscanbedownloaded
fromYealinkwebsite:http://www.yealink.com/GPLOpenSource.aspx?BaseInfoCateId=293&NewsCateId=2 9 3&Ca teId=293.