AT&T System 75 Wiring Diagram page 326

CHAPTER 5. AUXILIARY EQUIPMENT INSTALLATION
PERSONAL ANALOG
COMPUTER
VOICE
EQUIPPED WITH TERMINAL
NETWORK ACCESS
UNIT (NAU) LINE
CORD
PC6300
PC7300
IBM PC/XT
4-PAIR
LINE
CORD
Figure 5-29. System Voice Circuits and STARLAN NETWORK Data
Circuits Sharing an Information Outlet
Installing Premises Lightwave System (PLS) Interface
The PLS is used to connect IBM* 3270 Type A terminals to an IBM 3274
cluster controller. An optical fiber backbone and station cables are used
instead of coaxial cables. When a PLS and a System 75 or 75 XE are
colocated, voice and data can be shared on the same information outlet
as shown in Figure 5-30.
* Trademark of International Business Machines Corporation.
STATION WIRING
SATELLITE,
SITE, OR
ADAPTER
INFORMATION
OUTLET LACATION
USER
ROOM
4-PAIR
LINE
CORD
NETWORK
SHARING
UNIT
(NSU)
ADAPTER
*USE WITH 110-TYPE TERMINAL BLOCK
†USE WITH 66-TYPE CONNECTING BLOCK
STATION
SIDE
PAIR 1
JUMPERS
BLUE OR
WHITE
FIELD
EQUIPMENT
ROOM
STARLAN
PURPLE
FIELD
B25A*
CABLE OR
356A A25B†
CABLE
SWITCH
SIDE
T
R
PURPLE
FIELD
PAIRS
TN742
2 AND 3
OR
TN769
CIRCUIT
PACK
PORT
5-53