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The T1 Configuration Window 8-3
HSIM-W87 Configuration
Line Status
This Þeld indicates the line status of the interface. It contains loopback state and
failure state information. Scroll to view all of the status information, if necessary.
T3 Line Type
Select the type of DS3 or C-bit application implementing this interface: M23 or
CbitParity. The type of interface affects the interpretation of the usage and error
statistics.
T3 Loop Back
Select the loopback conÞguration of the T3 interface. Options are:
No Loop Not in a loopback state. A device that is not capable of
performing a loopback on the interface will always have this
value.
Payload The received signal at this interface is looped through the device.
Typically the received signal is looped back for retransmission
after it has passed through the devicesÕs framing function.
Line Loop The received signal at this interface does not go through the
device, but is looped back out.
Transmit Clock Source
Select the T3 Transmit Clock Source: Loop-Timing, which indicates that the
recovered receive clock is used as the transmit clock, or Local-Timing, which
indicates that an internal clock source is used.
To change an option in the T3 ConÞg window:
1. In the Line Type, Loop Back, and Transmit Clock Source sections, click to
select the desired option.
2. Click the Apply button to set your changes.
The T1 Configuration Window
You can set certain variables for the DS1 connections using the T1 ConÞg window.
To access the T1 ConÞg window:
1. Click on the appropriate Module Index to access the Module menu.
2. Select HSIM W87 Config (T1). The T1 Config window, Figure 8-2, will appear.