C
OMREX
C
ORPORATION
8
STAC Product Manual
9
This is a 3-pin male XLR connector with balanced line level output contain-
ing the audio of the caller(s) on Hybrid 1.
This is a 3-pin male XLR connector with balanced line level output contain-
ing the audio of the caller(s) on Hybrid 2.
Use this RJ-45 jack to connect an external hybrid to STAC. Refer to page 42
for additional information.
These four RJ-45 jacks provide connection of telephone lines 1-6 and 7-12
to the mainframe. See the
P
HONE
L
INE
P
INOUTS
section on page 10 for wiring
instructions.
These four RJ-45 jacks provide optional
Loop-Thru
connections for tele-
phone lines 1-6 and 7-12, allowing access to designated telephone lines
when STAC is not using them. STAC can also be configured via DIP switch-
es to disable line access when a
Loop-Thru
device is active on that line.
Refer to the
DIP S
WITCH
section on page 12 for details.
Note: A STAC6 System only has phone line and loop-thru functions for lines
1-6.
Use these RJ-45 jacks to connect up to four control surfaces to the main-
frame with standard four-pair cable (Cat-4 or better).
This port provides status indications for
Ringing
and
On Air
lines. For details
see
S
TAC
M
AINFRAME
S
TATUS
I
NDICATIONS
on page 14.
Phone Line
and
Loop-Thru
connections are made via RJ-45 cables,
pinned such that each phone line is on one twisted pair of a four-pair cable
(Cat-4 or better) as shown on page 10. Only three pairs are used on each
jack. (Pair 4 is unconnected.) The use of the
Loop-Thru
connections is
optional. If used, the
Loop-Thru
connections will provide access to each
designated telephone line when STAC is not using it. Also, STAC can be set
to disable line access when a
Loop-Thru
device is active on that line. (See
page 13 for more information.)
Comrex sells a “STAC Breakout Box Kit” that provides RJ-11 access to each
phone line and
Loop-Thru
port on STAC. One kit is required for access to
six telephone lines. If
Loop-Thru
access is required, two kits are required
for each group of six phone lines.
11) H
YBRID
1 O
UTPUT
C
ONNECTOR
12) H
YBRID
2 O
UTPUT
C
ONNECTOR
13) H
YBRID
E
XPANSION
P
ORT
14) P
HONE
L
INES
1-6
15) P
HONE
L
INES
7-12
16) L
OOP
-T
HRU
1-6
17) L
OOP
-T
HRU
7-12
18) C
ONTROL
S
URFACE
J
ACKS
19) P
ARALLEL
P
ORT
P
HONE
L
INE
C
ONNECTIONS