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4 DIAGNOSTICS 
 
54
 
Field Description 
Network 
Access 
Displays whether the cable modem has been granted access to the DOCSIS network: 
• 
YES — The cable modem was granted DOCSIS network access 
• 
NO — The set-top is obtaining DOCSIS network access  
• 
N/A — The value is invalid or cannot be retrieved, or DOCSIS is not enabled 
Initialize BPI 
The Baseline Privacy Interface (BPI) status: 
• 
YES — BPI has been successfully initialized for the cable modem 
• 
NO — BPI initialization is in progress, has failed, or was not requested by the 
network  
• 
N/A — The value is invalid or cannot be retrieved, or DOCSIS is not enabled 
System Up 
Time 
The Days, Hours, Mins (minutes), and Seconds the DOCSIS system has been 
operational. If the value is invalid or cannot be retrieved, or if DOCSIS is not enabled, 
each field displays zeros.  
IP Addresses 
The Cable Modem and Set-Top IP addresses in dotted-decimal format 
xxx.xxx.xxx.xxx. Each byte value is padded with zeros when necessary. For example, 
10.0.1.10 is displayed as 010.000.001.010. If the value is invalid or cannot be retrieved, 
or if DOCSIS is not enabled, 000.000.000.000 is displayed. 
MAC Addresses 
The Cable Modem and Set-Top MAC address in hexadecimal format xx:xx:xx:xx:xx:xx. 
Each byte value xx ranges from 00 to FF and is padded with zeros when necessary. For 
example,0:0:2D:1:F1:D is displayed as 00:00:2D:01:F1:0D. If the value is invalid or 
cannot be retrieved, or if DOCSIS is not enabled, 00:00:00:00:00:00 is displayed. 
Downstream Channel (carries data from the headend to the set-top) 
Carrier Lock 
• 
YES — The cable modem is locked to a DOCSIS downstream channel 
• 
NO — The cable modem is not locked to a downstream channel 
• 
N/A — The value is invalid or cannot be retrieved, or DOCSIS is not enabled 
Frequency 
The center frequency of the channel to which the DOCSIS downstream channel 
receiver is tuned. It can be 54 to 860 MHz. If the value is invalid or cannot be retrieved, 
downstream Carrier Lock is NO, or if DOCSIS is not enabled, N/A is displayed. 
LKC 
The last known carrier (LKC); the frequency of the last tuned downstream channel used 
if the embedded cable modem enters hunt mode. It can be 54 to 860 MHz. If the value 
is invalid or cannot be retrieved, Carrier Lock is NO, or if DOCSIS is not enabled, N/A is 
displayed. 
Mode 
The DOCSIS downstream channel modulation: QAM 64 or QAM 256. If the value is 
invalid or cannot be retrieved, Carrier Lock is NO, or if DOCSIS is not enabled, 000 is 
displayed. 
Power Level 
The downstream channel power level in dBmV. If the value is invalid or cannot be 
retrieved, Carrier Lock is NO, or if DOCSIS is not enabled, 000 is displayed. 
SNR 
The estimated downstream channel carrier signal-to-noise ratio in the format xx.x dB. It 
is the value reported as SNR in the MIB. If the value is invalid or cannot be retrieved, 
Carrier Lock is NO, or if DOCSIS is not enabled, 00.0 is displayed. 
Upstream Channel (carries data from the set-top to the headend) 
Frequency 
The center frequency of the channel to which the DOCSIS upstream channel receiver is 
tuned. It can be 5 to 42 MHz. If the value is invalid or cannot be retrieved, Carrier Lock 
is NO, or if DOCSIS is not enabled, N/A is displayed.