1152700 • Issue 1 • February 2001 • Section 2 Operation and Maintenance
Page 3 of 3
Table
SELECTION
(PRIMARY OR SECONDARY)
DS1 Transmit Mode
FDL Receive
AIS Threshold
Frame Format
Encoding Rule
DEFAULT
AIS
Threshold
Generation
Enabled
N/A
ESF
B8ZS
OPTIONS
AIS Threshold Generation
Message Pass Through
Enabled
Disabled
PRS
ST1
ST2
ST3
SMC
DUS
ESF
SF
N/A
B8ZS
AMI
N/A
PROTECTION
DEFINITIONS
Only available when Frame Format is set to ESF. Requires transmitting AIS over the derived DS1 signals if a clock reference has degraded below the threshold quality level.
A
Primary Reference Source
Stratum 1 level source
Stratum 2 level source
Stratum 3 level source
SONET Minimum level Clock
Reference should not be used for source.
Extended Superframe
Superframe
Not Applicable when a DS1 Output is not selected.
Bit 8 Zero Substitution
Alternate Mark Inversion
Not Applicable when DS1 Output not selected.
Switch Command
Protection Mode
Revertive Time (if Revertive)
None
Non Revertive
0
None
Enable
Manual
Revertive
Non Revertive
0 to 1800 seconds N/A
No switch command selected.
Enables a switch to take place when needed, used after a manual switch to release the manual condition..
Initiates a switch to
Switches back to recovered primary source following a failure.
Does not automatically revert back to primary source after a failure recovers.
Selectable up to 30 minutes.
Not Applicable if
Page
© 2000, ADC Telecommunications, Inc.
