6 Message Reference
Parameters
The parameters that can be included in the MVD_MSG_SC_CONNECT message depend on the requested mode. The following table depicts the parameters that are required for each possible mode:
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Mode |
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local_ |
| source_ | source_ |
| dest_ | dest_ |
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| local_slot |
| pattern | |||||
| stream | stream | timeslot |
| stream | timeslot | ||
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1 | *1 | *1 | * | * |
| 0 | 0 | 0 |
2 | * | * | 0 | 0 |
| * | * | 0 |
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3 | *1 | *1 | * | * |
| * | * | 0 |
4 | *1 | *1 | 0 | 0 |
| 0 | 0 | 0 |
5 | * | * | 0 | 0 |
| 0 | 0 | 0 |
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6 | *1 | *1 | 0 | 0 |
| 0 | 0 | 0 |
8 | *1 | *1 | * | * |
| 0 | 0 | 0 |
11 | *1 | *1 | * | * |
| 0 | 0 | 0 |
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12 | *1 | *1 | *1 | *1 |
| 0 | 0 | 0 |
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13 | *1 | *1 | *1 | *1 |
| 0 | 0 | 0 |
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* indicates that the parameter is required, 1 indicates that CPU local bus stream values are invalid.
•local_stream
Defines which local stream to use for all the modes of operation.The local_stream parameter specifies either a T1/E1/J1 Line Interface Unit (LIU) or CPU local bus stream. Values for the LIU are in the range 0 to one less than the number of LIUs supported. CPU local bus stream values are in the range 0x90 upwards, the number of CPU local bus streams are one less then the number of LIUs supported.
•local_slot
Defines which timeslot on the local stream to use for all the modes of operation. The local slot value has different valid ranges depending on the local stream type. The following table shows the permitted values and their meanings.
Local Stream Type | Local Slot Range |
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Local stream to E1 LIU | 1 to 31 |
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Local stream to T1 LIU | 1 to 24 |
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Local stream to CPU | 1 to 31 |
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•mode
Determines the operating mode. The following table shows the permitted values and their meanings.
Value | Meaning | |
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| Make a simplex connection from a timeslot on the cross connect switch to a | |
1 | timeslot on the local bus. Use the local_stream, local_slot, source_stream, and | |
| source_slot parameters to specify the local and switch timeslots, respectively. | |
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| Make a simplex connection from a timeslot on the CPU local bus stream to a | |
2 | timeslot on the cross connect switch. Use the local_stream, local_slot, | |
dest_stream, and dest_slot parameters to specify the local and switch | ||
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| timeslots, respectively. | |
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| Make a duplex connection between a CPU local bus stream timeslot and two | |
| cross connect switch timeslots. Use the local_stream, local_slot, source_stream, | |
3 | and source_slot parameters to specify one simplex connection; and the | |
| local_stream, local_slot, dest_stream, and dest_slot parameters to specify the | |
| other simplex connection. | |
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| Remove a simplex connection from a timeslot on the cross connect switch to a | |
4 | timeslot on the CPU local bus. Use the local_stream and local_slot parameters | |
| to specify the timeslot for disconnection. | |
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| Remove a simplex connection from a timeslot on the CPU local bus to a timeslot | |
5 | on the cross connect. Use the local_stream and local_slot parameters to specify | |
| the timeslot for disconnection. | |
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