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P300H P300 Series Modem Installation and Operating Handbook Page 139
2048k IDR mode: [?] 1=Normal
2=Align frame for Rx TS re-order 3=Tx TS re-order
Change, Tx, Baseband, Continuous, 2048k IDR Menu
2048k IDR mode: [?] 1=Normal
2=Re-order Rx TS (if Tx TS frame aligned !)
Change, Rx, Baseband, Continuous, 2048k IDR Menu
7.3 CUSTOM IDR OPERATION WITH 2048KBPS CONTINUOUS DATA
7.3.1 Change, Tx/Rx, Baseband, Continuous, 2048k Menu (IDR)
If Custom IDR operation based on the Low (T1/E1) IDR format has been selected and the continuous data
rate is 2048kbps, then the Modem can offer Timeslot Identity Maintenance and Timeslot Re-ordering
features (see the section on "Timeslot Identity Maintenance" in Appendix F on page 208). These features
are only available if the Extended D/I feature is available (standard on P300-TCM). Note that this is only
offered under Custom IDR to simplify normal IDR menu operation, but Custom IDR can be selected with
all the possible custom features set to `Normal` to allow normal IDR operation, but with Timeslot ID
Maintenance & Re-ordering. The following screen is displayed when configuring the Tx path:
NORMAL Any format within the data is ignored, and data is randomly aligned within the IDR
frame (as per normal IDR operation)
ALIGN FOR RX A terrestrial G.732 frame format is acquired, and is aligned within the IDR frame
to allow the receive equipment to re-order the timeslots (if so set). Other than
aligning the terrestrial frame within the satellite IDR frame the Tx data is
unaffected.
TX TS
RE-ORDER This selection leads onto a screen identical to that for IBS G.732 re-ordering (as
described in the last `screen shot` and paragraphs of the previous section) which
allows the timeslots to be arbitrarily re-ordered prior to transmission. The final re-
ordered G.732 frame is frame aligned within the satellite IDR frame, allowing the
receive path also to re-order on reception as well (although if both end re-order,
it might get just a tad confusing !).
The corresponding following screen is displayed when configuring the Rx path:
NORMAL The data formatting within the IDR frame is ignored and fed out as a 2048kbps
stream as per normal IDR operation.
RE-ORDER RX This option only functions if the corresponding Tx path is set for `ALIGN FOR RX`.
In this case the Modem relies on the incoming G.732 frame being aligned within
the satellite IDR frame in order to locate and re-order the G.732 timeslots. This
selection leads onto a screen identical to that for IBS G.732 re-ordering (as
described in the previous section for IBS G.732 operation on page 138) which
allows the timeslots to be arbitrarily re-ordered prior feeding to the terrestrial
output.