http://support.polycom.com/global/documents/support/technical/products/voice/Custom_Backgrounds_TB62473.pdf
http://plcmtechnet.com/documents/voice-conferencing/unified-communications-software-ucs/5-1-0/administrator-guide/set-advanced-phone-features
http://community.polycom.com/t5/VoIP/FAQ-How-can-I-setup-certain-Device-parameters-on-my-phone-via-a/td-p/38980
http://community.polycom.com/t5/VoIP/Polycom-SoundPoint-IP-331-with-Windows-DHCP-Urgent/td-p/930
http://community.polycom.com/t5/VoIP/FAQ-Where-can-I-download-configuration-files-from-or-create/td-p/30558
http://community.polycom.com/t5/VoIP/FAQ-What-is-the-relevance-of-the-sip-cfg-and-phone1-cfg-files/td-p/4229
http://supportdocs.polycom.com/PolycomService/support/global/documents/support/technical/products/voice/Best_Practices_Using_the_Master_35361.pdf
http://community.polycom.com/t5/VoIP/FAQ-How-can-I-setup-my-Phone-Provisioning-Download-Upgrade/td-p/4203
http://community.polycom.com/t5/VoIP/FAQ-What-is-the-relevance-of-the-000000000000-cfg-or-lt-mac-gt/td-p/4225