TXC-06412BROG Transwitch Corporation, TXC-06412BROG Datasheet - Page 114
TXC-06412BROG
Manufacturer Part Number
TXC-06412BROG
Description
Manufacturer
Transwitch Corporation
Datasheet
1.TXC-06412BROG.pdf
(226 pages)
Specifications of TXC-06412BROG
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PHAST-12P Device
DATA SHEET
TXC-06412B
PRELIMINARY TXC-06412B-MB, Ed. 2
June 2005
10.11.6 Example: STM-1 Mode, 1+1 APS Protection
W1
W1
y
Figure 28
using two PHAST-12P devices. One PHAST-12P device handles up to four Worker lines (W)
while a second PHAST-12P handles the associated Protection lines (P). Both devices are
interconnected through the APS Port interface, using one fourth of the bandwidth per STM-1/
OC-3 protection group. The cross connects of both devices setup permanent bridges from the
Worker Transmit lines to their Protection Transmit lines over one of the APS Port interfaces.
The received protection payload of the four lines is available on the other APS Port interface.
To/From POH Monitor/Generator
W2
W2
Protected Traffic
y
device #1
Connect
Cross
shows an example of a 1+1 APS protection architecture in STM-1/OC-3 mode
W3
W3
y
Figure 28. STM-1/OC-3, 1+1 APS Idle State
W4
W4
y
PHAST-12P #1
TxApsPort
RxApsPort
-
Operation
-
TxApsPort
RxApsPort
PHAST-12P #2
P1
P2
device #2
Connect
Cross
P3
P4
1 1 4 o f 2 26
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