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P300H P300 Series Modem Installation and Operating Handbook Page 150
8.8 CROSS REFERENCE TO SDM300 D/I & FRAMING MODES.
The P300 Series Modems are equipped with the Drop/Insert and possibly the Extended Drop/Insert features
can provide all the Drop/Insert functions of competing equipment such as the SDM300. If you are familiar
with the modes the SDM300 offers then here is a cross reference, along with the menu entries to configure
the P300 similarly (unlike the SDM300 however, you don't have learn what the cryptic abbreviations mean,
you just answer the questions !)
E1_CCS: 2048kbps G.732 with common Channel Signalling
1. Select Change, Tx, Service, IBS/SMS
2. Select Change, Tx, Baseband, Drop Mux, G.732.
3. Select the number of timeslots to drop, and include the Common Channel Signalling (CCS) timeslot
(probably TS16).
4. Select Leave or Replace with Idle code as required.
5. When "G.732 Channel Associated Signalling, 1=Normal (ignore), 2=Transfer" is asked, select Normal
(ignore).
6. If the number of timeslots chosen is not an `Odd values of N` (eg N=7 or 9), then the unit will prompt
"TS Identity will be maintained by TS32 multiframe (YES)" and the setup is complete.
7. If you have selected an `Odd value of N` the unit will prompt "TS Identity over satellite, 1=Normal
(maintain), 2=Don't maintain". If you select Normal (maintain) the unit will provide TS identity
maintenance for any value of N by using a CAS multiframe (Paradise proprietary). If you select Don't
Maintain then the Modem will not use a CAS multiframe, and will be compatible with other
manufacturer equipment with the same number of timeslots selected.
8. Configure the receive path similarly, if Rx=Tx is active, then only the timeslots need selecting.
Note the P300 Modem equipped with the Extended D/I feature (standard on P300-TCM) can support any
value of N, not just N = 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 as listed for the SDM300.
E1_CAS: 2048kbps G.732 with Channel Associated Signalling
As above, but there is no CCS timeslot to select in step 3, and at step 5 when "G.732 Channel Associated
Signalling ? " is asked, select CAS whereupon the dialogue terminates.
Note the P300 Modem equipped with the Extended D/I feature (standard on P300-TCM) can support any
value of N, not just those listed for the SDM 300.
E1_IBS: 2048kbps with no assumed G.732 frame format
1. Select Change, Tx, Service, IBS/SMS
2. Select Change, Tx, Baseband, Continuous, 2048000bps
3. When asked the question "2048k IBS Mode: 1=Normal 2=G.732" answer Normal
E1_31_TS: 2048kbps G.732 with no CAS, 31 timeslots used for data
Assuming the intent of this mode is to provide a carrier with a satellite framed rate of 2048kbps...
1. Select Change, Tx, Service, IBS/SMS
2. Select Change, Tx, Baseband, Continuous, 2048000bps
3. When asked the question "2048k IBS Mode: 1=Normal 2=G.732" answer G.732
4. When asked the question "Channel Assoc Sig in TS16 1=Normal(No CAS) 2=CAS" select Normal
5. When asked the question "Timeslot re-order option 1=Normal (linear) 2=Re-order" select Normal
Unlike the SDM300, this mode passes 31 data timeslots transparently, not just the 30 implied in the
SDM300 handbook. The P300 Modem can also provide 30 timeslot operation where TS16 contains CAS,
at step 3 simply select CAS.