363-206-295
Technical Specifications
Issue 1
December 1997
10-3
Table 10-2. DS3 Performance Monitoring (PM) Mode
If provisioned in the VMR or VM modes (Table 10-2), DS3 P-bit violations and
SEFS are counted and the count is thresholded to flag detected performance
degradation of the DS3 signal incoming from the fiber.
■
Enhanced DS3 Performance Monitoring (see Table 10-14)
— CV-P Coding Violations
These errors are counted and thresholded independently for all DS3
interfaces provisioned in VM or VMR mode. When the F&M bit or
C-bit option is selected, network elements (NE) could be
provisioned in VMR or VM mode. See Table 10-3.
Table 10-3. Enhanced DS3 Performance Monitoring Modes
— Errored Seconds (ES-P)
ES-P are not counted during UAS. ES-P are counted and
thresholded independently for each DS3 path terminated by the
system.
Monitor P-Bits
Correct P-Bits
VMR mode
Yes
Yes
VM mode
Yes
No
CC mode
No
No
Mode
PM
Option
Monitor
P-Bits
Monitor
F&M Bits
Monitor
C-Bits
Correct
P-Bits
Correct
F&M Bits
Correct
C-Bits
Monitor
Line PM
VMR
P-bit
Yes
No
No
Yes
No
No
Yes
VMR
F&M-bit
No
Yes
No
Yes
No
No
Yes
VMR
C-bit
No
No
Yes
Yes
No
No
Yes
VM
P-bit
Yes
No
No
No
No
No
Yes
VM
F&M-bit
No
Yes
No
No
No
No
Yes
VM
C-bit
No
No
Yes
No
No
No
Yes
CC
P-bit
No
No
No
No
No
No
Yes
CC
F&M-bit
No
No
No
No
No
No
Yes
CC
C-bit
No
No
No
No
No
No
Yes