3Com S26x Crib Toy User Manual


 
5-14 Channelized Data
Configuring Channelized Data
Line Impedance
Range: 75, 120
Default: 120
Description: Defines the line impedance as 75 or 120
Transmit Clock
Range: INT, REC
Default: INT
Description: Selects the source of transmit clock.
INT: From Internal Oscillator
REC: Transmit Clock is derived from Receive Clock
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Only one E1 port on the card can be selected for REC timing.
Threshold Value-LCV
Range: 1 to 255
Default: 10
Description: Specifies the number of errors that must occur within a fixed
15- minute window before an alarm is declared. This is based on
the threshold value for Line Code Violations, which are the
occurrences of either a bipolar violation or excessive zeroes error
events.
Threshold Value-PCV
Range: 1 to 255
Default: 10
Description: Specifies the number of errors that must occur within a fixed
15- minute window before an alarm is declared. This is based on
the threshold value for Path Coding Violations, which are frame
synchronization bit errors in the D4 and E1-noCRC formats, or
CRC errors in the ESF and E1-CRC formats.