Paradise P300 Dropped TS ? =Leave 2=Replace with idle code, =Normal ignore 2=Transfer via sat o/h

Change, Tx/Rx, Baseband, Drop/Insert, CAS Menu

NORMAL (IGNORE)

TRANSFER

For G.732 bearer operation (with the Extended D/I feature available):

G.732 Chan Assoc Sig in TS16: [?]

The Modem hardware is capable of duplication and omission of timeslots, although the operator interface (described above) does not allow such selections. If this is a requirement, please contact the factory to discuss your needs.

After the timeslot selection the following prompt appears:

Dropped TS: [?]

1=Leave 2=Replace with idle code

Change, Tx/Rx, Baseband, Drop/Insert, Idle Menu

When data is `Dropped` from the bearer, there is the option to either leave the Tx data on the bearer, or to replace it with an idle code. If the Rx data is to be inserted into the same timeslots as the as the Tx data has been dropped from, then the Rx data will replace the Tx and it is of no consequence if it is first replaced by Idle code or not.

LEAVE	The Tx data remains on the bearer, and will be accessible to downstream
	equipment (unless Rx data inserted over it)
REPLACE	The Tx data is replaced as follows [MSB..LSB]:
	G.732	Timeslots:	[01010101]
	G.732	CAS in TS16:	[0101] (if CAS signalling mode active)
	T1-ESF & T1-D4 Timeslots:		[10000000]

Note that in G.732 mode, TS0 is never replaced with idle code even if it is part of the Drop selection and Idle is selected.

If the modem is set for CLOSED NETWORK or standard IDR operation the dialogue finishes here.

If the modem is set for CUSTOM IDR (Low rate format) then skip to the on page 62

If the Extended D/I feature is available (Standard on P300-TCM) and is setqfor Closed Net Plus ESC, IBS or CUSTOM IBS, then the following two prompts appear depending on the PCM bearer selected. Note that Channel Associated Signalling (CAS) & Robbed Bit Signalling (RBS) are described in para 10.2 "Signalling Systems Introduction: CCS, CAS & RBS" on page 210 if required.

1=Normal (ignore) 2=Transfer via sat o/h

TS16 does not contain CAS (ie a terrestrial CAS multiframe and `abcd` signalling nibbles for each timeslot). It is simply treated as a normal data timeslot and may be dropped / inserted as with any other timeslot.

TS16 contains CAS and by implication a terrestrial multiframe in order to carry the CAS. If selected, the terrestrial multiframe will be acquired, and CAS removed from/replaced into the Drop/Insert bearer. The CAS will be conveyed transparently from end to end of the link within IBS (or custom IBS) overheads.

P300H P300 Series Modem Installation and Operating Handbook Page 59