Paradyne COMSPHERE
3610, Operator'S Manual

Page: 22 / 310

COMSPHERE 3600 Series Data Service Units
1-6 July 1999 3610-A2-GB91-90
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.
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.
Table 1-2
Valid Sync Speeds and Nondisruptive Diagnostics*
DDS
Primary Channel
Rate (kbps)
Async DTE
Rate (bps)
Sync Port
Rate (bps)
Maximum NonD
Rate (bps)
1
56 56k 56k None
56 48k to 1.2k 48k 2400
38.4 38.4k 38.4k None
38.4 32k to 1.2k 32k 2400
19.2 19.2k 19.2k None
19.2 18k 18k 1200
19.2 16.8k to 1.2k 16.8k 2400
9.6 9.6k 9.6k None
9.6 7.2k to 1.2k 7.2k 2400
4.8 4.8k 4.8k None
4.8 4k 4k 800
4.8 2.4k to 1.2k 2.4k 2400
2.4 2.4k 2.4k None
2.4 2k 2k 400
9.6 1.8k 7.2k
2
2400
2.4 1.2k 1.2k 1200
2.4 600 2.4k
2
None
2.4 300 1.2k
2
1200
2.4 150 1.2k
2
1200
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.