Interworking Different Manufacturers Equipment - Paradise Datacom P300-VSAT Installation & Operating Handbook

The following table defines what happens when differing scramblers are interworked
Scrambler
Descrambler
CCITT
INTELSAT
FDC
Linkabit
* Pattern Dependent
8.10

INTERWORKING DIFFERENT MANUFACTURERS EQUIPMENT

Unfortunately not all manufacturers use the same terminology, and so this complicates circuit set up. To
the best of our ability the following table shows the equivalence between manufacturers. This table will be
extended as information on other products is forthcoming.
Equipment
Paradise P300 Modem
Paradise P200 series (closed net)
BPSK requires P300 Tx Spectrum invert
Paradise P230 IBS/SMS
FDC SM290 / SM2900 (Viterbi)
FDC SM290 / SM2900 (Sequential)
SSE SM3000/4000 (Viterbi)
SSE SM3000/4000 (Sequential)
EF SDM 300 / 300A (Viterbi)
EF SDM 300 / 300A (Sequential)
(Requires Tx & Rx Spectrum invert on P300
Modem)
EF SDM 650B
(Requires Tx & Rx Spectrum invert on P300
Modem)
Comstream CM701
Viterbi: BPSK requires P300 Tx/Rx spectrum
invert, QPSK is OK
Sequential requires P300 Rx spectrum
invert in BPSK and both Tx & Rx spectrum
invert in QPSK. See Appendix E:
FaultMode=11
A `compatibility document` which describes interworking tests between the Paradise P300/P400 Modems
and other manufacturers modems is available on request.
P300H
CCITT
OK 1x10 error rate*
-8
1x10 error rate*
Hopeless
Data invert and
-8
1x10 error rate*
Scramblers in the columns below are determined to be equivalent
CCITT
Uses synchronous IBS scrambling, so V.35 type not an issue
"Comstream"
(701 set for data
invert)
P300 Modem Installation and Operating Handbook
INTELSAT
-8
Hopeless
OK Hopeless
Hopeless
Data Invert Hopeless
INTELSAT
"Scrambler on"
"V.35"
"Link"
"V.35"
"308"
"IESS
308(V.35)"
"IESS
308(V.35)"
(300/A set for data
invert)
"V.35"
(650B set for data
invert)
"IDR MAN"
FDC Linkabit
Data invert and
-8
1x10 error rate*
Data invert
OK
Hopeless
OK
FDC Linkabit
"FDC"
"FDC" "V.35"
"FDC"
"FDC" "V.35"
"IESS
308(V.35)"
(300/A set for true
"V.35"
(650B set for true
"Comstream"
(true data but poss
-8
10 error rate)
"Link"
"308"
data)
data)
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