yealink phone:

press the voicemail key (envelope icon)
you will hear "please enter pin then press #"
enter your pin number found in your "welcome" email, then press #
you will hear "press * to play (messages) press 9 for options, to exit press #"

to set up your greetings, press 9 for options.
to change your self-identification message, press 5
this is where you record just your name.
to record a new self-identification message, press 0
you will hear "record your self-identification message, then press #"
to save the message, press 0
to exit, press #

to change your greeting message, press 8
this is what callers hear when you don't answer the phone.
to record a new greeting message, press 0
you will hear "record your greeting message, then press #"
to save the message, press 0
to change the voicemail pin, press 7
you will hear "please enter new pin code, then press #"
to save, press *
to exit, press #

checking voicemail externally (yealink)

voicemail access remotely: (3cx system)
dial the main number
thunder bay = 807-343-8010
orillia = 705-330-4010
dial extension 9999 (voicemail centre)
enter your extension
enter your pin then press #
the voicemail pin can be found in your "welcome" email.
follow the voice prompts to check your voicemails or change your voicemail greetings.