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Operation
Cascade Configuration Screen
The Cascade Configuration screen shown in
Cascade Port interface is installed in the DSU. It presents a screen of configuration options that
determine operating parameters for the Cascade Port interface. Each option is identified by a
selection number or letter, and displays its current setting.
the settings available for each option.
[1] Cascade Service State:
[2] Cascade Frame Control:
[3] Cascade Frame Type:
[4] Cascade Line Code:
[5] Cascade Interface Type:
[6] Cascade Line Buildout Control:
[7] Cascade Line Buildout:
[8] Cascade Pre-Equalization:
[0] RETURN TO PREVIOUS MENU
Figure 3-11
Table 3-4
SC 553 Cascade Configuration Option Settings
Option
[0] Return to Previous Menu
[1] Cascade Service State:
[2] Cascade Frame Control:
[3] Cascade Frame Type:
[4] Cascade Line Code:
076R155-000
Issue 7
CASCADE CONFIGURATION
Select: [ ]
Cascade Configuration Screen
Returns display to the Configuration menu screen
Out of Service – (Default)
In Service –
Manual (Default)
Auto – DSU adapts to either ESF or D4 framing, based on the signal it
receives.
Caution: Do not enable Auto Framing for both the cascade port and the unit
connected to it.
ESF (Default)
D4
Unframed
B8ZS – Bipolar with 8 Zero Substitution encoding for the network side
(Default)
AMI – Alternate Mark Inversion encoding for the network side. DSU enforces
an 8 x (N+1) ones density requirement when AMI is selected in com-
bination with framed N x 64k operation and consecutive DS0s, or with
unframed operation.
SpectraComm 553 Fractional T1 DSU
Installation and Operation Manual
Figure 3-11
is only accessible when the optional
Table
3-4, which follows the figure, lists
Out of Service
Manual
ESF
B8ZS
DS-1
Manual
0 dB
0-130ft
Potential Settings
Terminal Interface
3-15
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