Below are some of the most popular IP Phones links on how to use some of the features.
Quick Overall Feature instructional videos
Yealink T54W Instructional Video (youtube.com)
Yealink T54W Walkthrough (youtube.com)
Setup your phone on WiFi
Yealink T54 | Connect Your Phone to WiFi (youtube.com)
Warm Transfer
Setup Speed Dial
Setup Voicemail
Set Voicemail Greeting on a Yealink T54W (youtube.com)
Hold & Call Park
Quick Overall Feature Instructional Videos
Yealink T27G T27P Tutorial VoIP Phone (youtube.com)
Blind Call Transfer
Get Chrome for your computer (youtube.com)
Warm Transfer
Quick Overall Feature Instructional Videos
Voicemail Setup
Yealink T46 Voicemail Setup (youtube.com)
Call Park
Yealink T46 Call Park Feature (youtube.com)
Warm & Blind Transfer
Warm Transfer
Yealink T42G: Warm Transfer (youtube.com)
Blind Transfer
Yealink T42G Call Transfer (Blind Transfer) (youtube.com)
Voicemail Setup