The checksum value is placed in the RS overhead of the following STM-1 before scrambling
Path Trace Byte (J0)
Order Wire Byte (E1)
Local order wire channel for voice communication between regenerators, cross connects, hubs and remote terminal
locations
F1 Byte
Section user channel
Byte is allocated for user purpose to carry proprietary messages
The channel is terminated at each regenerator location
Data Communications Channel Bytes (D1/D2/D3)
Data Communications Channel (DCC)
D1, D2 and D3 together form a 192kbps message channel for OAM purposes
It can generate internal or external messages
It can also be used as a BER function
Pointers
AU Pointers Bytes (H1/H2/H3)
Enable transfer of STM-1 frames with STM-N frames and are processed by the MS terminating equipment
H1 [AU Pointer]
RXT-3900 e-Manual D07-00-111P Rev A00
Summary of Contents for RXT3900
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