Alcatel Carrier Internetworking Solutions Omni Switch/Router - Manual (Page 1006)

Viewing T1/E1 Local Statistics
Page 33-18
SEFS . Severe Errored Framing Second. A second with one or more out-of-frame errors or an
AIS error.
LES . Line Errored Seconds. The number of seconds during which one or more Line Code
Violation errors have occurred (see also the definition of Line Code Violation below).
CSS . Controlled Slip Seconds. A one-second interval with one or more controlled slip errors.
Controlled slip errors are the replication or deletion of the payload bits on a frame. Such an
error may occur when there is a difference between the timing of a synchronous receiving
terminal and the received signal.
PCV . Path Code Violations. A frame synchronization bit error in EF/ D4 and E1 -no CRC frames,
or a CRC or frame synchronization error in the T1- ESF (Extended Super Frame) and E1-CRC
frames.
LCV . Line Code Violations. The occurrence of either a bipolar violation or excessive zeros
error. A bipolar violation is the occurrence of a pulse of the same polarity as the previous
pulse. In
B8ZS and HDB3 coded signals, a bipolar violation is a pulse of the same polarity as
the previous without being part of the zero substitution code. An excessive zeros error is the
occurrence of more than 15 contiguous zeros in an
AMI -coded signal; in a B8ZS -coded signal,
it is the occurrence of seven (7) or more contiguous zeros.
Viewing Current Local Statistics
You can view statistics for the current 15-minute interval on a single port by entering the
following command
telcs /
where is the slot number where the board is located, and is the port number on
the board on which you want to view statistics. For example, to view 15-minute interval statis-
tics for Port 2 on the board in slot 5, enter
telcs 5/2
A screen similar to the following displays:
Local Current 15-minute Measurement for port 2 on slot 5
Circuit Identifier
: Alcatel T1 Circuit
Valid Intervals : 1 of 96 Elapsed Time : 431 of 900
ES SES BES UAS SEFS LES CSS PCV LCV
====== ====== ====== ====== ====== ====== ====== ====== ======
0 0 0 0 0 0 0 0 0
Definitions of the fields and columns in this display are the same as those used for the telts
command. See Viewing Total Local Statistics on page 33-17 for an explanation of these statis-
tics.