TXC-06312BIOG Transwitch Corporation, TXC-06312BIOG Datasheet - Page 110

• Manufacturer Part Number: TXC-06312BIOG
• Manufacturer: Transwitch Corporation

Specifications of TXC-06312BIOG

• Lead Free Status / Rohs Status: Supplier Unconfirmed

PRELIMINARY TXC-06312B-MB, Ed. 2
June 2005
PHAST-12N Device
DATA SHEET
TXC-06312B
10.11.8 Example: STM-1 Mode, 1:n APS Protection
W1
W1
y
Figure 36
using two PHAST-12N devices.
When the APS FSM detects a failure of one of the Worker lines, e.g., line #2 in
cross connect of PHAST-12N #2 performs a protection bridge connecting the transmit
protected traffic of the failed line to the transmit Protection line. PHAST-12N #1 performs the
protection switch. It connects the protected traffic of the failed line to the payload of its
associated received Protection line available at the Receive APS Port interface. The
unprotected extra traffic of that Protection line is no longer available and will be squelched.
To/From POH Monitor/Generator
W2
W2
Protected Traffic
y
device #1
Connect
Cross
shows an example of a 1:n (n=7) APS protection architecture in STM-1/OC-3 mode
W3
W3
y
Figure 36. STM-1/OC-3, 1:7 APS Idle State
W4
W4
y
PHAST-12N #1
TxApsPort
RxApsPort
-
Operation
-
RxApsPort
TxApsPort
PHAST-12N #2
W5
W5
To/From POH Monitor/Generator
Protected Traffic
W6
W6
device #2
Connect
Cross
W7
W7
Extra Traffic
P
E
Figure
1 1 0 o f 2 0 2
37, the