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A-4
Item
Consecutive zeros
enforcement
Keep Alive signal
Framing format
Alarms and status conditions
Diagnostics
GDC 048R154-000
Technical Characteristics
Characteristic
Electrical (Cont.)
8 x (N+1) when configured for AMI,
consecutive, N x 64, framed; or AMI,
unframed
Type 1 (consecutive, framed ones fill-
ing the unused bandwidth)
D4 Superframe,
AT&T 54016 Extended Superframe
(ESF),
ANSI T1.403 ESF with automatic
frame format,
unframed option
Out of Frame (OOF),
Alarm Indication Signal (AIS or Blue
alarm),
Loss of Signal (LOS)
Network Self-Test;
Network Line Loop;
Network Payload Loop;
Network Local Test, with Self-Test;
Network Remote Test, with Self-Test;
DTE Self-Test;
DTE Local Loop;
DTE Digital Loop;
DTE Remote Digital Loop, with Self-
Test.
Front panel test switch
EIA test leads for LL, RL
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