Metrodata MetroLAN-1000, Подробное краткое руководство по эксплуатации

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QUICK START CONFIGURATION
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4.6 Optional Configuration Items
The following configuration items are not required to get the basic unit operational but will be
required for a full deployment:
4 . 6. 1 C1/J0 Operating Mode
In the initial offering of ITU G.707 the C1 overhead byte was used to define the three
overhead columns. Later versions of G.707 reassigned C1 as J0 which may be used as an
identifier called the "Regenerator Section Trace". When the J0 mode of operation is
selected, the user may configure a 15 character string to uniquely identify this interface. The
16th byte is a CRC-7 which is calculated and appended automatically by the MetroLAN.
The user may configure the following:
J0 Transmit: “String of up to 15 alphanumeric characters"
J0 Receive: “String of up to 15 alphanumeric characters"
If an expected J0 receive value is configured, the MetroLAN will declare a TIM alarm when
there is a mismatch between the configured expected and actual receive J0 identifiers.
To assist the user in configuration, or fault diagnosis, the actual string being received is also
displayed.
4 . 6. 2 Path Overhead, J1 Path Trace Configuration
The J1 Path Trace Identifier is a 16 character string where the user may define up to 15
characters and the MetroLAN will append a CRC-7. The user may configure the following:
J1 Transmit: “String of up to 15 alphanumeric characters"
J1 Receive : “String of up to 15 alphanumeric characters"
If an expected J1 receive value is configured, the MetroLAN will declare a TIM alarm when
there is a mismatch between the configured expected and actual receive J1 identifiers.
To assist the user in configuration, or fault diagnosis, the actual string being received is also
displayed.