4
–
Configuration & Operation
NetXpress LX & CM-30R Installation & Operation Manual
Version 1.1
GatesAir, Inc.
4-59
Intraplex Products
Stream Program Type:
Select
Compressed
Audio/Data
(0 channel value),
Linear
Audio/Voice
(255 channel value), or
Enter
Underrun
Value
Manually
to type a value between 0 and 255 at
Packet Underrun Byte
. The type of stream program defines the contents of the underrun buffer,
which is played out to the internal TDM bus any time there is no packet from the IP network to play.
Since different types of channel modules react differently when receiving long strings of bits with a
zero value or a one value, changing the value of the underrun byte can improve how the module
behaves when the network drops packets. For example, APT-x compression modules mute faster when
presented with a long string zero valued bits.
Packet Underrun Byte:
When
Enter
Underrun
Value
Manually
is selected in the
Stream
Program
Type
field, the
Packet
Underrun
Byte
field is enabled so that you can define the value of
the underrun byte. Type a value between 0 and 255. If you select
a value other than
Enter Underrun
Value Manually
for the
Stream Program Type
, the
Packet Underrun Byte
field is read-only.
Stream Bandwidth (kbits/sec):
The amount of bandwidth in kilobits per second required by the
stream, automatically computed based on number of
TDM
Bus
Frames
per
Packet
. This field is
read-only.
Stream Delay (milliseconds):
The initial jitter/lead position in the Jitter Buffer, automatically
computed based on
Jitter
Buffer
Size
.
Packet Size (bytes):
The number of bytes in a stream packet, automatically computed by adding
TDM
Bus
Frames
per
Packet
and overhead (62). This field is read-only.
Cancel:
Click this button to return to the
Streams
Table
page without creating a new stream.
Prev:
Click this button to return to the
Stream
Creation
–
Stage
3
page.
Next:
After completing the
Stream
Creation
–
Stage
4
page, click this button to advance to the
Stream
Creation
Summary
page (Figure 4-53).
