<s>
TOPS	B-Device
-	O
Traffic	O
Operator	O
Position	O
System	O
is	O
a	O
computerized	O
operator	O
telephone	B-Device
switchboard	I-Device
designed	O
by	O
Bell-Northern	O
Research	O
Labs	O
for	O
the	O
SP-1	O
4	O
Wire	O
Switch	O
in	O
the	O
early	O
1970s	O
and	O
still	O
widely	O
used	O
today	O
by	O
toll	O
and	O
directory-assistance	O
operators	O
.	O
</s>
<s>
The	O
terminals	O
known	O
as	O
'	O
TOPS	B-Device
Positions	O
 '	O
are	O
usually	O
connected	O
to	O
Nortel	O
DMS-100	B-Protocol
and	O
DMS-200	B-Protocol
telephone	O
switches	O
.	O
</s>
<s>
Below	O
are	O
some	O
of	O
the	O
different	O
TOPS	B-Device
systems	O
developed	O
:	O
</s>
<s>
TOPS	B-Device
Multipurpose	O
Position	O
.	O
</s>
<s>
Nortel	O
Networks	O
 '	O
operator	O
services	O
system	O
is	O
based	O
on	O
the	O
DMS	O
TOPS	B-Device
switch	O
.	O
</s>
<s>
TOPS	B-Device
Position	O
Controller	O
.	O
</s>
<s>
(	O
Previous	O
generation	O
equipment	O
required	O
for	O
TOPS	B-Device
MP	O
positions	O
)	O
The	O
processing	O
unit	O
provides	O
intelligence	O
and	O
interfaces	O
to	O
the	O
switch	O
for	O
up	O
to	O
four	O
TOPS	B-Device
MP	O
operator	O
positions	O
.	O
</s>
<s>
The	O
Class	B-Device
5	I-Device
switch	O
system	O
for	O
Traffic	O
Operator	O
Position	O
System	O
(	O
TOPS	B-Device
)	O
enables	O
the	O
definition	O
of	O
up	O
to	O
255	O
unique	O
queues	O
of	O
calls	O
to	O
operators	O
—	O
and	O
up	O
to	O
255	O
unique	O
profiles	O
defining	O
the	O
responsibilities	O
of	O
operators	O
and	O
teams	O
,	O
that	O
is	O
,	O
the	O
queues	O
from	O
which	O
they	O
can	O
draw	O
calls	O
.	O
</s>
