Modem - Upstream Burst - Ubee DDW2600 Subscriber User Manual

Ubee Interactive
4.1.5
This section explains how to use the Upstream Burst screen of the web interface.
The Upstream Burst screen displays detailed information on the device's upstream
data flow to the service provider.
1. Access the web interface. Refer to
2. Click the Modem link from the top menu and then the Upstream Burst link from
the left side of the screen. Field explanations are listed below the following screen
example.
Label
Modulation Type
Differential Encoding
Preamble Length
Preamble Value Offset
FEC Error Correction (T)
FEC Codeword Information
Bytes (k)
Scrambler Seed
Maximum Burst Size
Guard Time Size
Last Codeword Length
Scrambler on/off
DDW2600 Wireless & DDC2700 Commercial Cable Modem/Router Subscriber User Guide • May, 2010

Modem - Upstream Burst

Description
QPSK/16QAM.
On/Off
0-1024 (bits).
0-1022 (bits).
0 to 10 (0 implies no FEC. The number of codeword parity
bytes is 2*T)
Fixed: 16 to 253 (assuming FEC on). Shortened: 16 to 253
(assuming FEC on)
15 bits (Not used if scrambler is off)
0-255 (mini-slots)
4-255 (symbols)
Fixed/shortened
On/Off
page 14, if needed.
4.1.5 Modem - Upstream Burst
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