TXC-06312BIOG Transwitch Corporation, TXC-06312BIOG Datasheet - Page 106

• 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
10.11.5 Example: STM-4/OC-12 Mode, 1:1 APS Protection
Figure 31
The setup is similar to the 1+1 case without the permanent bridge. This allows unprotected
extra traffic to be transported over the Protection line while there is no protection request
active.
When the APS FSM detects a failure of the Worker line the cross connect of the Protection
PHAST-12N performs a protection bridge connecting the transmit protected traffic to the
transmit Protection line. The Worker PHAST-12N performs the protection switch. It connects
the protected traffic to the Receive APS Port interface which transports the payload of the
received Protection line. The unprotected extra traffic is no longer available and will be
squelched.
Protected Traffic
shows an example of a 1:1 APS protection architecture in STM-4/OC-12 mode.
W
W
y
RxApsPort
TxApsPort
Figure 31. STM-4/OC-12, 1:1 APS
-
RxApsPort
TxApsPort
Operation
y
E
P
-
Protected Traffic
Switch
W
W
y
RxApsPort
TxApsPort
RxApsPort
TxApsPort
Squelch
E
P
Bridge
1 0 6 o f 2 0 2