Functional Description | |
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G.704 Framing and Rate Selectable HDSL
Time slots 0 and 16 are always transported in accordance with the G.704 framing standard. Although not used by G.703 to transport data, the
In structured mode, time slots 0 and 16 do not contain data and are transparent to the G.703 input. The transmitted G.703 data arrives at both the customer and network DTE at the selected HDSL payload rate. This is illustrated in Figure 6 on page 14.
Table 9. Examples of Selected and Actual HDSL Payload Rates
Selected HDSL Payload |
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| Actual HDSL Payload | ||
Rate (kbps) / Number of | G.703 Time Slots Transported | |||||
Time Slots | Rate (kbps) | |||||
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64 | / 1 | 1 (plus 0 and 16) |
| 256 | ||
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128 | / 2 | 1 and 2 (plus 0 and16) | 256 | |||
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192 | / 3 | 1 through 3 (plus 0 and16) | 320 | |||
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256 | / 4 | 1 through 4 (plus 0 and16) | 384 | |||
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384 | / 6 | 1 through 6 (plus 0 and16) | 512 | |||
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512 | / 8 | 1 through 8 (plus 0 and16) | 640 | |||
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640 | / 10 | 1 through 10 (plus | 0 and16) | 768 | ||
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768 | / 12 | 1 through 12 | (plus | 0 and16) | 896 | |
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896 | / 14 | 1 through 14 | (plus | 0 and16) | 1024 | |
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1024 | / 16 | 1 through 15 and 17 (plus 0 and16) | 1152 | |||
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1152 | / 18 | 1 through 15, 17 through 19 (plus 0 and16) | 1280 | |||
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1536 | / 24 | 1 through 15, 17 through 25 (plus 0 and 16) | 1664 | |||
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1920 | / 30 | 1 through 15, 17 through 31 (plus 0 and 16) | 2048 | |||
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1984 | / 31 | 1 through 31 | (plus | 0) | 2048 | |
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2048 | / 32 | 0 through 31 | (a) |
| 2048 | |
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(a) The line and desktop units operate in the unstructured mode when 32 time slots are selected.
HOT SWAPPING
UTUs can be inserted and removed from any compatible shelf or enclosure with the power turned on. This will not cause damage to the units nor will it cause interference to any other HDSL circuits that are operating within the same shelf or enclosure.
August 9, 2002 | 17 |