You will need the page codes if you use the feature to page select groups. One softkey will have PGE written above it when the phone is in a mode that can page. This is the Page key (the second softkey on most of the phones in the group).
To make a page announcement to phones or external speakers: Lift the handset, press the extension and then enter a paging access code.
To make a group page, Press Group Page and then the group code or press extension + #31 and the zone number .
To make an All Call Page
1. With the handset off-hook, press All Call Page
...or dial #30. This pages all telephones in the All Call Page Group but, depending
on system programming, you may or may not page external speakers.
2. Make your announcement then hang up.
To make an Emergency Page
1. To make an Emergency Page, lift the handset off-hook, dial #37.
2. To make an Emergency Page to a group, lift the handset off-hook, dial #38 and
enter the Group number.
The manuals for all Toshiba phones
are here: http://www.telecom.toshiba.com/Telephone_Systems_Resources/User_Guides/
. The DKT3010SD is part of the IPT2000/3000 series phones; the direct URL for the manual is http://www.telecom.toshiba.com/Telephone_Systems_Resources/User_Guides/pdf/_new/Strata_CIX_Strata_CTX_User_Guide_IPT2000_and_IPT3000_Series_Telephones.pdf
I hope this helps.