7 Configuration Command Reference
•<board_id>
The logical identity of the board in the range from 0 to one less than the number of boards supported.
•<liu_id>
The identifier of the T1/E1/J1 Line Interface Unit (LIU) in the range from 0 to one less than the number of LIUs.
•<liu_type>
The physical interface type. The following table shows the permitted values and their meanings.
Value |
| Description | |
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1 | Disabled (used to deactivate an LIU). In this mode the LIU does not produce an | ||
output signal. | |||
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3 | E1 | 120 ohm balanced interface | |
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4 | T1 | (including J1) | |
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5 | E1 | 120 ohm balanced interface (preferred setting for E1 operation) | |
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6 | E1 | ||
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7 | T1 | (including J1) | |
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Note: The option chosen by the user must be appropriate to the actual hardware fitted, otherwise an error status is returned.
•<line_code>
The line coding technique. The following table shows the permitted values and their meanings.
Value | Description |
1HDB3 (E1 only)
2AMI
4 | B8ZS (T1/J1) |
•<frame_format>
The frame format. The following table shows the permitted values and their meanings.
Value | Description |
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1 | E1 double frame (E1 only) |
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2 | E1 CRC4 multiframe (E1 only) |
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3 | F4 |
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4 | D3/D4 (Yellow alarm = bit 2 in each channel (T1 only) |
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7 | ESF (Yellow alarm in data link channel (T1 only) |
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8 | F72/SLC96 |
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9 | J1 frame format (liu_type must be T1) |
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•<crc_mode>
The CRC mode. The following table shows the permitted values and their meanings.
Value | Description |
1CRC generation disabled
2CRC4 enabled (frame_format must be set to 2)
4 | CRC6 enabled (frame_format must be set to 7) |
120
