ADTRAN 1xN User Manual
Page 11
11
61190860L1-5B
Section 61190860L1-5, Issue 2
In-band Release Protocol
See Table 8 for return to normal operation.
Out-of-Band Release Protocol
See Table 9 for return to normal operation.
Signal Transmit
The controller card will transmit a 0 dB signal.
Line Build Out (LBO)
The controller card will not provide LBO functions.
The controller card will rely upon the NIU to provide
LBO.
9. AUTO-PROTECT OPERATION
When the Pro-Cap is configured in a Total Access
3000 network optioned for the auto-protect feature, the
TA 3000 will re-map a failed loop's data to the TA
3000 protect unit which in turn sends the protect
initiate codes to the Pro-Cap. The Pro-Cap will put its
protect unit online to complete the standby
transmission loop to the customer. Loss of data
transmission on a particular loop for any reason
initiates the protect function. See Figure 7. Normal
transmission is automatically restored when the failure
is corrected.
Table 8. In-Band Protection Release Protocol
p
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Table 9. Out-Of-Band Protection Release Protocol
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Figure 7. Total Access 3000 Auto-protect Switching
Total Access 3000
Pro-Cap
Remote
Units
H2TU-Cs
Normal Operation
Auto-Protect Operation (Loop A Failure)
3
4
L2
MUX
DS3
Feed
CPE
2
1
D
C
B
A
R4
R3
R2
R1