8-2
IMACS System Release 5.1.9
Reference Guide
Model No.
Running Head
User Card Diagnostics
System Testing and Diagnostics
8.3
User Card Diagnostics
8.3.1
WAN Diagnostics
Software-initiated diagnostics on T1 and E1 WAN aggregates include looping the WAN signal
toward the network (line loopback) or the system (local loopback) and placing any one of the
DS0 channels that make up the WAN signal in local loopback. The table below list detailed
information on the diagnostic capabilities of the WAN cards.
Loopbacks
T1/CSU
T1/DSX
E1/CEPT
On-Card loopbacks
T1/E1 Line loopback Toward Network
Yes
Yes
Yes
T1/E1 Local loopback Toward User
Yes
Yes
Yes
DS0 Channel loopback Toward Network
No
No
No
DS0 Channel loopback Toward User
Yes
Yes
Yes
In-Band loopback Code Generation
Industry-Standard T1/E1 Loop-Up Code
Yes
Yes
N/A
Industry-Standard T1/E1 Loop-Down Code
Yes
Yes
N/A
In-Band loopback Code Detection
Industry-Standard T1/E1 Loop-Up Code
Yes
Yes
N/A
Industry-Standard T1/E1 Loop-Down Code
Yes
Yes
N/A
Bit Error Rate Tester (BERT)
Patterns Supported
All 1s
Yes
Yes
Yes
All 0s
Yes
Yes
Yes
1:1
Yes
Yes
Yes
1:7
Yes
Yes
Yes
511
No
No
No
2047
No
No
No
3:24
Yes
Yes
Yes
QRSS
Yes
Yes
Yes
BERT Direction
Toward User
No
No
No
Toward Network
Yes
Yes
Yes
Statistics Gathered by BERT
Bit Errors (BE)
Yes
Yes
Yes
Errored Seconds (ES)
Yes
Yes
Yes
Severely Errored Seconds (SES)
Yes
Yes
Yes
Consecutive Severely Errored Seconds
Yes
Yes
Yes
Out of Synchronization Seconds (OOS)
Yes
Yes
Yes
Bit Error Rate (BER)
Yes
Yes
Yes
Elapsed Seconds (ELAP)
Yes
Yes
Yes
HDSL Errored Seconds
N/A
N/A
Yes*
HDSL Severely Errored Seconds
N/A
N/A
Yes*
HDSL Unavailable Seconds
N/A
N/A
Yes*
