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Selecting Test Features
Using FEAC Codes
Using FEAC Codes
Description
The third C-Bit in subframe 1 is used as a FEAC channel, where alarm or status
Option 012 required
information from the far-end terminal can be sent back to the near-end terminal. The
channel is also used to initiate DS3 and DS1 line loopbacks at the far-end terminal
from the near-end terminal.
The codes are six digits long and are embedded in a 16 bit code word; the format is
0XXXXXX011111111.
There are two types of code, Loopback and Alarm Status.
Loopback provides a choice of two DS1 messages and two DS3 Messages. The DS1
Messages can be sent in ALL DS1 channels or in a SINGLE channel. The message
can be repeated up to 15 times.
Alarm Status provides 13 preset codes and a USER programmable code function.
These codes can be transmitted continuously or in bursts.
The new code is transmitted by choosing
HOW TO:
Transmit an FEAC code
1 Choose SIGNAL
2 Choose
When a FEAC code is not being transmitted, an all ones pattern is transmitted.
84
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and PAYLOAD TYPE
DS3
display.
MAIN SETTINGS
TEST FUNCTION
TRANSMIT
or
BURST
ON
.
on the
CBIT
TRANSMIT
, DSn and ALARM TYPE
.
DS3 FEAC
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