Specifications

Chapter 5 Troubleshooting and Diagnostics Installation and Operation Manual
5-12 Testing ASMi-52CQ ASMi-52CQ Ver. 2.12
Data
Local ASMi-52CQ Remote ASMi-52
Data
Clock
Clock
Line
Interface
Line
Interface
Transmit
Receive
Receive
Transmit
Remote
DTE
Local
DTE
Glue
Logic
Glue
Logic
Figure 5-6. Remote Digital Loopback (RLB)
Running the Bit Error Rate Test (BERT)
It is possible to generate BERT+RLB or BERT tests (from both CO and CPE) in E1
and DTE Serial units. These tests can be set only if there is a connection to the FE
unit. Both tests (BERT+RLB and BERT) check the performance of the SHDSL lines
connecting the local and remote units and can be activated opposite the remote
standalone ASMi-52 with software revision 2.12 or higher.
Figure 5-7 and
Figure 5-8 show the BERT+RLB test and BERT test, respectively.
Data
Local ASMi-52CQ Remote ASMi-52
Data
Clock
Clock
Line
Interface
Line
Interface
RLB
Transmit
PRBS
Generator
BERT
Receiver
Receive
Receive
Transmit
Remote
DTE
Local
DTE
Glue
Logic
Glue
Logic
Figure 5-7. Remote Digital Loopback + BERT Test
Data
Local ASMi-52CQ Remote ASMi-52
Data
DSL
Transmit
DSL
Receive
Clock
Clock
Line
Interface
Line
Interface
Transmit
PRBS
Generator
PRBS
Generator
BERT
Receiver
BERT
Receiver
Receive
Receive
Transmit
Remote
DTE
Local
DTE
Glue
Logic
Glue
Logic
Figure 5-8. BERT Test