Specifications

4 Message Reference
48
mode = 6 : Remove a duplex connection between 2 timeslots on the CT bus and 1
timeslot on the local bus. Using parameters local_stream and local_slot, to specify both
timeslots for disconnection.
mode = 10 : Generate a fixed pattern (e.g., idle pattern) on a local timeslot.
local_stream specifies the liu_id, local_slot the timeslot, and pattern the 8 bit data to
be output on the timeslot.
mode = 11 : Make a simplex connection between two local bus timeslots (without
using the CT bus). In this case, source_stream and source_slot specify the source of
the signal in terms of liu_id and timeslot respectively. local_stream and local_slot
specify the outgoing timeslot.
mode = 12 : Make a duplex connection between two local bus timeslots (without
using the CT bus). In this case, source_stream and source_slot specify one timeslot in
terms of liu_id and timeslot, whilst local_stream and local_slot specify the other
timeslot.
source_stream
The source stream references which of the CT bus streams is used as a source of data.
The parameter takes values in the range 0 … 31. For some modes (e.g., 11 and 12),
this field is used to specify a local_stream instead of a CT bus stream.
source_slot
The source slot references the CT bus timeslot from which to connect or disconnect to
the local stream. The source slot value has the following ranges depending on the CT
bus speed.
CT bus speed
Source Slot Range
4 Mbps
0 ... 63
8 Mbps
0 … 128
dest_stream
The destination stream references which of the CT bus streams is used as a destination
for the data. The parameter takes values in the range 0…31.
dest_slot
The destination slot references the CT bus timeslot to which a local stream timeslot can
be connected or disconnected. The destination slot value has the same range as the
source slot.
pattern
The value of the fixed data to be generated. The value must be in the range 0 to 255.
Typical values are 0xff for an "all ones" idle pattern, or 0x2a for an ITU-T E1 idle
pattern.
Status Response
The confirmation message (if requested) indicates success by status of zero.
On error, the following status values can be found in the confirmation message.