Stls (Subscriber Trunk Line S ); Figure 3-8 Stls Interfaces - Siemens Hicom 100 E Service Manual

Overview of modules
Add-on modules for system expansions
3.5.4 STLS (subscriber trunk line S
The STLS4 module has 4 S
es in subscriber unit mode or as an internal S
mode (with cross-connected RX TX lines) (see Figure 5-6).
STLS2 is a subequipped version with 2 S
This module is also required for using the digital modem in the MB.
No provision is made for supplying power to mains-powered terminal devices.
Devices of this type must be powered locally, e.g. using a plug-in mains adapter or
bus PSU.
S ports
0
Mini Western
not for STLS2
Figure 3-8 STLS interfaces
Figure 3-9 Contact assignment of the S
3-18
ports. The ports can be operated either as external trunk interfac-
0
1
2
X2
3
4
6 5 4 3 2 1
)
0
interface (PMP bus) in network terminal (NT)
0
ports.
0
STLS
2 = SX +
3 = SR +
4 = SR -
5 = SX -
SX = signal transmit
SR = signal receive
Mini Western socket
0
50
X1
2
A31003-K16-X001-3-7620
Hicom 100 E Version 2.1, Service manual
to MB
,
07/99