ADTRAN DSU 5600, User Manual

Page: 17 / 37

61200.078L1-1 DSU 5600 User Manual
9
Chapter 2. Installation
Table 2-A
Switch Settings for DTE Rate
DTE Rate SW 1 SW 2 SW 3
1.2 and 2.4 kbps Async Down Down Down
Sync, Scrambler Disabled Up Down Down
4.8 kbps Async Down Up Down
9.6 kbps Async Up Up Down
19.2 kbps Async Down Down Up
38.4 kbps Async Up Down Up
57.6 kbps Async Down Up Up
Sync, Scrambler Enabled Up Up Up
Loop Rate - SW 4
When the SW4 switch is in the down (56 kbps) position, the
network interface of the DSU 5600 is configured for operation at
56 kbps, and when this switch is in the up (64 kbps) position, the
network interface is configured for 64 kbps operation.
For 64 kbps clear channel operation, there is a possibility that the
DTE data sequences might mimic network loop maintenance
functions and erroneously cause other network elements to
activate loopbacks. To prevent this, a data scrambler is enabled
when the 64 kbps option is selected.
Clear To Send (CS) - SW 5
When this switch is in the down (normal) position Clear To Send
(CS) follows the Request To Send (RS) lead with 250
µ ±
125
µ
of
delay. The only exceptions to this occur when network or test
conditions prevent data from being transferred over the DTE
interface. During these conditions CS is turned
Off .
For the up ( On ) position CS is forced On all the time.