2-4
Installation
GDC 048R154-000
Table 2-1
Option Application Notes — Switchbank S13, CSU
Characteristics
(Continued on next page)
Option
Selection
Switch
Position
Description
Configuration
Mode
Soft
S13-1
Off*
DSU can be configured by a
VT100-compatible terminal
connected to the Console port. The
positions of other switches may
not reflect the actual configuration
of the unit when this is selected.
View the terminal interface
Configuration screen for current
settings.
Hard
S13-1
On
DSU can only be configured by
means of pc board hardware
switches
Line Framing
ESF*
S13-2
S13-3
Off*
Off
Selects ESF Framing
D4
S13-2
S13-3
Off
On
Selects D4 Framing
Unframed
S13-2
S13-3
On
Off
Selects unframed data
transmission
Auto
Framing
S13-2
S13-3
On
On
Enables Auto Framing; the Desk-
Top T1 DSU adapts to either ESF
or D4 framing based on the signal
it receives.
Caution:
Do not enable Auto Framing for
both DSUs on a link.
Network Line
Type
DS-1
S13-4
Off*
Selects the line interface to operate
as a DS-1 network interface for
connection to a T1 line.
DSX-1
S13-4
On
Selects the line interface to operate
as a DSX-1 interface for
connection to the cascade port of
another DSU or to a CSU.
* Factory default selection.