Snom 220 - Manual (Page 11)

Installation
11
Selecting the Timezone
The timezone to be used on the phone can also be selected by moving
through the different timezone options available in the menu and
pressing
to activate your selection.
If the settings explained above are set up properly, the phone will ask
for the first account registration.
Logging on the first account
If no number is assigned to the phone, you will be prompted to type in
your account name. This consists of your phone number succeeded by
@ and the address of your registrar (for SIP) or gatekeeper (H.323).
The phone tries to guess the correct registrar/gatekeeper address, so it
could look something like this:
After typing in your account name, confirm your account by pressing the
key.
The phone tries to register your given account name at the given
registrar/gatekeeper. The idle screen is shown and if no crossed box but
a phone symbol is displayed in front of your just configured identity,
your registration has been successful.
When this state has been reached, the time and date are displayed on
the display.