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Switch S3 — Network Interface Configuration
Network Interface Configuration options include Super Frame (SF) or
Extended Super Frame (ESF), Alternate Mark Inversion (AMI) or
B8ZS coding, bit stuffing disabled or bit stuffing after 15 zeros and
Performance Report Message (PRM) disabled or PRM enabled.
Switches S3-1, S3-2, S3-3, and S3-4 control the Network Interface
Configuration Options.
NOTE:
It is not allowed to enable SF framing and PRM
generation at the same time. In the event of a conflict
the D-SERV DSU/CSU will flash the front panel
POWER, RED ALARM, and DATA LEDs red until the
configuration error is corrected by the operator.
Switch S3 — Network Interface Configuration
Function
1
2
3
4
SF
Down
ESF
Up
AMI
Down
B8ZS
Up
Disable Bit Stuffing
Down
Enable Bit Stuffing after 15 zeros
Up
Disable PRM
Down
Enable PRM
Up
Figure 9. S3 Location
Operator's Manual
16