Specifications

8-2
Reference Guide
Model No.
Running Head
User Card Diagnostics System Testing and Diagnostics
Note:
*Applicable only for the E1-HDSL plug-in module. Also the same statistics are
available for the remote end.
Loopbacks T1/CSU T1/DSX E1/CEPT/HDSL
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*