Loop Telecom Loop-O9500R

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Loop-O9500 SDH/SONET IMAP

SDH/SONET-MSTP

O9500R with 3E1 cards now can do DS0-SNCP Protection. Below is the DS0-SNCP Protection

Architecture.

The diagram below illustrates the DS0 signal path in normal condition. The DS0 signal travels on both primary path and

secondary path. The primary path is configured to be the working path and the secondary path is configured to be the

protection path.

Secondary Path

1 * DS0 Input1 * DS0 Output

1 * DS0 Output1 * DS0 Input

O9500R

(Protection Path)

Node A

O9500R

Node B

Protected DS0

3E1

Card

3E1

Card

O9500R

E1/V.35

Card

Node B Node A

Node B

Node A

Node B

Node A

Secondary Path

The diagram below illustrates the DS0 signal path in faulty condition. When the primary path is broken, the secondary path

will automatically become the working path.

1 * DS0 Input

1 * DS0 Output

1 * DS0 Output1 * DS0 Input

O9500R

Node B

O9500R

Node A

O9500R

(Working Path)

Primary Path

Line

Break

O9500R

Node B

Node A

Node B

Node A

Node B Node A

O9500R

Primary Path

(Working path)

Loop Telecom Loop-O9500R - Page 29