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The inband control code sequences will be recognized either in DS1 framed format (SF or ESF framing) or in unframed format.
Table
Table
NAME | DEFAULT CODE | DETECTION TIME | COMMENTS | |
Arming (inband) | 11000 | > 5 seconds | The signal is sent inband or over | |
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| ESF data link. HDSL units in | |
Arming (ESF) | 0001 0010 1111 1111 | 4 repetitions | disarmed state make the transition | |
to armed state. When the inband | ||||
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| arming code is detected, the | |
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| smartjack loopup state activates. | |
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Activation (HLXC) | 1101 0011 1101 0011 | > 3 seconds | The signal is sent inband. HDSL | |
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| units go to loopup state when they | |
Activation (HRX) | 1100 0111 0100 0001 | > 3 seconds | are in armed state. Loopup is | |
activated for selected units. | ||||
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Activation (HLXR) | 1100 0111 0100 0010 | > 3 seconds |
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Deactivation (all | 1001 0011 1001 0011 | > 5 seconds | The signal is sent inband. Units in | |
HDSL units) |
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| loopup state go back to armed state. | |
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Loopup | 1101 0101 1101 0110 | > 3 seconds | Disable loopup | |
disable |
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| loopbacks stay up until deactivation | |
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| or disarm code is received. | |
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Disarming (inband) | 11100 | > 5 seconds | The signal is sent inband or over | |
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| ESF data link. HDSL units are | |
Disarming (ESF) | 0010 0100 1111 1111 | 4 repetitions | disarmed. | |
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Arming | n/a | 2 hours | An armed HDSL unit goes to | |
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| disarmed state. | |
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Loopup | n/a | Programmable | An HDSL unit in loopup goes to | |
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| from Version D | armed state. | |
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| HLXC |
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Note: All codes are programmable.
© 2000, ADC Telecommunications, Inc.