AT&T MERLIN LEGEND Release 2.0 Equipment And Operations Manual page 94

Hardware Components
Remote Access dial code
Listed Directory Number (the extension for the QCC queue)
These buttons are used by a system operator for one-touch dialing and call
transfer. Ten additional buttons are located at the bottom of the DSS.
The 50 numbers programmed onto the DSS are considered a "page," Each
DSS can have three pages of numbers, for a total of 150 numbers per DSS.
Two DSSs connected together increase this capability to 300 numbers. (If two
DSSs are connected, page one has the first set of 100 numbers, page two has
the second set of 100, and page three has the third set.)
Three of the 10 lower buttons on the DSS are reserved as Page buttons to
provide access to the different pages. The range of the numbers on the pages
can be programmed to begin with any number up to 9950, but the default for
the beginning Page numbers is 0, 50, and 100, respectively, for the three
pages. A fourth button is reserved as a Message Status button, which, when
pressed, changes the indication of the DSS button lights from telephone use to
Message Status mode. The other six buttons on each DSS are for future use.
See Telephone Power Units and Table 2-9 in this chapter for more information
on connecting DSSs and consoles.
NOTE:
DSSs are shipped without local auxiliary power supplies; if required, these
must be ordered separately.
2-20 Telephones and Consoles