AT&T MERLIN LEGEND Communications System PBX System Planning Manual page 73

Trunks
Table 3-3 Continued
Service
Software Defined Network (SDN)
Accunet Switched Digital Service
Station Number Identification/Automatic
Number Identification (SID/ANl)
Note: The availability of the caller
identification information may be limited by
local-serving (caller's) jurisdiction,
availability, or central office equipment.
—- . . . . . . . . .
-
see "Tie Trunks" later in this chapter.
Factory setting.
3-18 Trunk Options
Description
A virtual private networking service
for voice and circuit-switched analog
data calls (up to 56 kbps). SDN lets
businesses use portions of the AT&T
Switched Network in concert with
their dedicated private line networks.
However, the system does not
support "uniform dialing plan,' which
is necessary for complete integration
with SDN.
A digital switching service between
subscriber data stations and far-end
connection. Useful for batch data or
file transfers, high-speed faxes, etc.
A caller identification service for
systems with display telephones, call
report systems, etc.
SID allows the called station to
display the station number of the
caller.
ANI allows the called station to
display the billing number (main
telephone number) of the caller.
Subscribers can choose to send -
their own calling information to other
subscribers for display or to
suppress the outgoing caller
identification.
choose the T1 type for services, program the module to emulate tie trunks
If you
to the central office.
T1
ISDN-PRI
x x
x
x