Valid Sync Speeds And Nondisruptive Diagnostics - Paradyne COMSPHERE 3610 Operator's Manual

COMSPHERE 3600 Series Data Service Units
Table 1-2 specifies the maximum diagnostic rate that
can be run for various asynchronous-to-synchronous
configurations. For example, if the primary channel rate is
56 kbps, the asynchronous DTE rate is 4.8 kbps, and the
synchronous port rate is 48 kbps, then Table 1-2 will show
that the nondiagnostic rate is 2400 bps. In this table, None
indicates that no excess bandwidth is available for
nondisruptive diagnostics. When the DSU is configured
for nondisruptive diagnostics and the Async Sync
configuration option is enabled, the DTE rate cannot
operate underspeed for diagnostics since the DTE is now
operating in synchronous mode.
DDS
Primary Channel
Rate (kbps)
56
56
38.4
38.4
19.2
19.2
19.2
9.6
9.6
4.8
4.8
4.8
2.4
2.4
9.6
2.4
2.4
2.4
2.4
1
These rates are automatically enabled by the firmware, so the NonD speed selected will be overridden
when Oversampling is used. ( See the description of NonD in the Diag Type configuration option. )
2
Oversampling is used.
* This table contains a sample set from which other rates can be derived; it does not include all combinations.
1-6
Table 1-2

Valid Sync Speeds and Nondisruptive Diagnostics*

Async DTE
Rate (bps)
56k
48k to 1.2k
38.4k
32k to 1.2k
19.2k
18k
16.8k to 1.2k
9.6k
7.2k to 1.2k
4.8k
4k
2.4k to 1.2k
2.4k
2k
1.8k
1.2k
600
300
150
July 1999
It should be noted that the maximum diagnostic rate
available is 1600 bps, but the DSU's firmware overrides
any selected rate with a speed up to 2400 bps if more
bandwidth is available for diagnostics.
Asynchronous port speeds of 150, 300, 600, and
1800 bps may be obtained by oversampling; oversampling
must be used to obtain these port rates.
Sync Port
Rate (bps)
56k
48k
38.4k
32k
19.2k
18k
16.8k
9.6k
7.2k
4.8k
4k
2.4k
2.4k
2k
2
7.2k
1.2k
2
2.4k
2
1.2k
2
1.2k
Maximum NonD
1
Rate (bps)
None
2400
None
2400
None
1200
2400
None
2400
None
800
2400
None
400
2400
1200
None
1200
1200
3610-A2-GB91-90