Figure 13: Remote loopback tests (NT6D80)
Protocol log (PLOG)
The count of D-channel errors is stored in the Protocol Log (PLOG).
The PLOG is printed by
using LD 96 as shown in the PLOG status check below.
Protocol errors can be the result of:
• PRI transmission problems and re-start procedures, or
• a protocol mismatch with the far end
D-channel maintenance
72 ISDN Primary Rate Interface Maintenance November 2011
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