Test Setup - Test Configurator, Timer, and System
NetBlazer
249
Signal - Signal Configuration (DSn/PDH)
Modify DS0/E0
Modify DS0/E0
button is only available when the DS0/E0 check box is
selected.
Note:
For DS0, the framing structure have 23 timeslots. For E0, the framing
structure PCM-30 and PCM30 CRC-4 have 30 channel timeslots while
PCM-31 and PCM-31 CRC-4 have 31 channel timeslots.
DS0/E0 Size
sets the channel timeslot data rate for the pattern payload
content to either
56K
or
64K
(default). A timeslot data rate of 56 Kbit/s
uses 7 bits while 64 Kbit/s uses 8 bits to carry the payload information.
Zero Code Suppression
allows the selection of the Zero Code
Suppression (ZCS) method used to replace the all-zero bytes of the Idle
and Tone payload contents. The ZCS mechanism is a global parameter
meaning that all channel timeslots configured with Tone/Idle data, use
the same ZCS method. Choices are:
ZCS
Description
Available with
None
a
a.
Default value.
No Zero Code Suppression
DS0 and E0
Jammed Bit 8
Every 8th (LSB) bit is forced to
1
.
DS0 and E0
GTE
Bit 8 of an all zero channel byte is replaced by
1
, except in signaling frames where bit 7 is
forced to
1
.
DS0
Bell
Bit 7 of an all zero channel byte is replaced by
1
.
DS0
Содержание FTB-1
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