Setting Port and Clock Modes
104
Interphase Corporation
Loopback Mode
Loopback mode is a transmission state in which the signal
received by the port is returned to the sender. Use this mode
when the remote end (the Telco, for example) is testing your
line; all information sent is returned to the remote end.
To select this mode, select
Loopback mode
on the Port Test
Configuration dialog (shown in Figure E-2 on page 103).
Two loopback settings are available:
•
Line loopback
The signal returned to the loopback command source
consists of the full signal. Bit sequence integrity is
maintained. No change in framing occurs, and no
bipolar violations are removed. This is the default
loopback setting.
•
Payload loopback
The signal returned to the loopback command source
consists of the payload of the received signal and
newly-generated ESF framing.
To select one of these loopback modes:
1.
Click
Options
on the LineTest Configuration Dialog.
The LineTest Options dialog appears:
Содержание iSPAN 5535 PRI
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Страница 70: ...Removing the Drivers 50 Interphase Corporation ...
Страница 82: ...Setting Up ISDN PRI Port Properties 62 Interphase Corporation ...
Страница 86: ...Determining RAS Support Parameters 66 Interphase Corporation ...
Страница 96: ...Problems and Possible Solutions 76 Interphase Corporation ...
Страница 120: ...Routing and Remote Access Service 100 Interphase Corporation ...
Страница 128: ...Setting Port and Clock Modes 108 Interphase Corporation ...
Страница 134: ...Interpreting LineStatus Indicators 114 Interphase Corporation ...
Страница 162: ...Glossary 142 Interphase Corporation ...
Страница 167: ...iSPAN PRI PCI ISDN Users Guide 147 B channels 84 D channel 82 layer 1 alarms 85 ...
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