Add support for the following new Yealink phone models in Tancredi to enable automatic provisioning via NethVoice:
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T7X Series: SIP-T73U, SIP-T73W, SIP-T74U, SIP-T74W, SIP-T77U
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T8X Series: SIP-T85W, SIP-T87W, SIP-T88W
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AXX Series: AX83H, AX86R
These models should be fully integrated to allow seamless provisioning, configuration, and management within the NethVoice ecosystem.