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22.4
Transport position
In HCM rate adaption, transport position defines the column where the F bit is
located (B7 to B0). The default is B7. The F bit is always in the first row (F0).
The transport position is set by entering B n , where B n is B0 to B7, with a default of
B7. The transport position is indicated on the display by the position of the F in the
circuit display and under Transport Posn on the right side of the display.
Procedure 22-3 To set the transport position
CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — RATE_ADAPT — TRANS_POS — <Bn> ↵
where
pp is 1 or 9, and c is 1 or 2, or A or B
Bn is B7 to B0
22.5
Signaling and the signaling bit stream
The signaling parameter determines whether the data circuit in the HCM frame
includes a signaling bit stream (the S in Figure 22-2). Turning signaling off means
that no bandwidth is taken up by signaling and that signaling is not transmitted
through the network. The signaling can be set to:
•
signaling on (default)
•
signaling off
When signaling is turned on, the S bit appears in the element immediately before the
first D bit.
Procedure 22-4 To set the signaling
where pp is 1 or 9
* Default
2902 MainStreet Technical Practices
May 2002
90-2906-01
CONFIG — POSITION — <pp> ↵ — FUNCTION — RATE_ADAPT
22 — HCM rate adaption
SIG_ON*/SIG_OFF
SK000522
22-5
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