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P300H P300 Series Modem Installation and Operating Handbook Page 151
T1_ESF & T1_ESF_S: 1544kbps Extended Super Frame (_S Special)
The P300 Modems do not require the _S `Special` mode to support N=9 and N=18, as the P300 Modem
equipped with the Extended D/I feature (standard on P300-TCM) can support any value of N. Simply
configure as follows:
1. Select Change, Tx, Service, IBS/SMS
2. Select Change, Tx, Baseband, Drop Mux, T1-ESF.
3. Select the number of timeslots to drop
4. Select Leave or Replace with Idle code as required.
5. When "T1-RBS Over Satellite, 1=Normal (or no RBS) 2=Maintain RBS" is asked, select as appropriate.
If RBS is selected the dialogue ends here.
6. For No RBS, 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. If you select Don't Maintain then the
Modem will not use a CAS multiframe, and will be compatible with the same number of timeslots
selected.
8. Configure the receive path similarly, if Rx=Tx is active, then only the timeslots need selecting.
T1 & T1_S 1544kbps D4 Framed (_S Special)
The P300 Modem do not require the _S `Special` mode to support N=9 and N=18, as the P300 Modem
equipped with the Extended D/I feature (standard on P300-TCM) can support any value of N. Simply
configure as for T1_ESF & T1_ESF_S as above, but select T1-D4 not T1-ESF in step 2
T1_IBS: 1544kbps in the same bandwidth as Normal 1536kbps IBS
This is the standard INTELSAT definition for non Drop/Insert 1544kbps over IBS.
1. Select Change, Tx, Service, IBS/SMS
2. Select Change, Tx, Baseband, Continuous, 1544000bps