Circuit Pack Descriptions
Issue 8.0 July 2002
7-33
Detailed Description of Operation 7
Overhead Byte Interface 7
Figure 7-12 provides an overall block diagram of the OW circuit pack.
Figure 7-12. OW Circuit Pack Block Diagram
The overhead byte interface interacts with the SONET section overhead channel.
The overhead byte interface accepts the following overhead bytes from the
interconnection panel of the Repeater Shelf - System Controller:
â– Section orderwire
â– User.
The overhead byte interface multiplexes this information and sends it via the
overhead channel to the transmit byte processor (TBP) on the OC48 Regenerator
(OC48 REGENR) circuit pack for transmission over the OC-48 high speed line.
This information provides end-to-end communications and maintenance.
Overhead
Byte
Interface
To
Overhead Channel
From
RBP
Power
Circuit
Section Orderwire
User
TBP
-48V (A)
-48V (B)
tpa 847834/01
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