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P300H P300 Series Modem Installation and Operating Handbook Page 138
Timeslot re-order option: [?]
1=Normal (linear) 2=Re-order
Change, Tx/Rx, Baseband, Cont', 2048k IBS, G.732, TS Menu
TS order: 0, 17-31, 16, 15-1
Toggle: ??-?? (YES)
Help
Change, Tx/Rx, Baseband, Cont', 2048k IBS, G.732, Re-order Menu
Whether CAS or NO CAS is selected, the following prompt appears:
The Modem can re-order the timeslot data in the G.732 frame prior to transmission along with the CAS
signalling if CAS was selected (although this feature is only available if the Extended D/I feature is
available, standard on P300-TCM). This is for services where the equipment at the other end of the link may
require subsets of data in particular timeslot groupings. In some applications this feature can remove the
need for separate Digital Access Cross Connect (DACCs) equipment used simply to re-arrange timeslots.
Typical applications might be with multiple LRE equipments (which may place data in alternate timeslots),
or for multidestinational carriers where the receive equipment needs data for each location in contiguous
timeslots.
If Re-order is selected a timeslot edit screen is displayed as follows:
This screen allows the operator to change the order of the transmitted timeslots. The screen above shows
groups of timeslots 1-15 and 17-31 swopped in location with 1-15 also reversed (15-1) although any
combination is possible. The selection system works by toggling timeslots or groups of timeslots into or out
of the selection:
Timeslots already in the selection are toggled out from any position of the selection when the
timeslot number is entered.
Timeslots not already in the selection are toggled on, and placed on the end of the selection.
Enter any single timeslot as a single or dual digit, eg 0, 5, 05, 23, 31
Enter groups of timeslots as two pairs eg 02-5 (two through five), 11-17, 12-2
NOTE Timeslots can be arbitrarily re-ordered, and so group selections may be down as well as up eg 11-17
means send in order 11,12,13...17, whereas 17-11 means send in order 17, 16, 15, ...11
Note that TS0 must remain the first selection in IBS G.732 modes, and for CAS, TS16 must also remain
in position.
The Modem hardware is capable of duplication and omission of timeslots, although for simplicity the
operator interface (described above) does not allow such selections. If this is a requirement, please contact
the factory to discuss your needs.