Parameter: Loopback
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The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values: | The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values: | ||
| − | * NONE ( | + | * NONE (Normal operation) |
| + | * LINE (Analog line loopback. The clock and data recovered from the line inputs are routed back to the line outputs of the analog transceiver bypassing the framer modules) | ||
| + | * PAYLOAD (Digital line loopback. This loopback is performed after the framer/deframer. The bit stream is looped back from the deframer (line input) to the framer (line output). | ||
* LOS (LS out of service) | * LOS (LS out of service) | ||
[[Category:Parameters]] | [[Category:Parameters]] | ||
Revision as of 03:13, 15 February 2011
The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values:
- NONE (Normal operation)
- LINE (Analog line loopback. The clock and data recovered from the line inputs are routed back to the line outputs of the analog transceiver bypassing the framer modules)
- PAYLOAD (Digital line loopback. This loopback is performed after the framer/deframer. The bit stream is looped back from the deframer (line input) to the framer (line output).
- LOS (LS out of service)
