TXC-06312BIOG Transwitch Corporation, TXC-06312BIOG Datasheet - Page 124
TXC-06312BIOG
Manufacturer Part Number
TXC-06312BIOG
Description
Manufacturer
Transwitch Corporation
Datasheet
1.TXC-06312BIOG.pdf
(202 pages)
Specifications of TXC-06312BIOG
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PRELIMINARY TXC-06312B-MB, Ed. 2
June 2005
PHAST-12N Device
DATA SHEET
TXC-06312B
11.9 LINE ALARM INDICATION (RING) PORT INTERFACE
11.9.1 Internal Line Alarm Indication (Ring) Port Interface
The Line Alarm Indication (Ring) Port Interface transports the Remote Information (RI) from
the TOH sink/monitor to the TOH source/generator. The Remote Information consists of the
REI and RDI values to be inserted by the TOH generator.
The TOH monitors send the Remote Information of all SDH/SONET lines to the Receive Line
Alarm Indication (Ring) Port Interface. This port multicasts the information internally to the
POH generator and externally to the Receive Alarm Indication (Ring) Port Interface.
The source for the Remote Information can be selected in the TOH generator, per SDH/
SONET line. When the Remote Information is taken from the Transmit Line Alarm Indication
(Ring) Port Interface, it is possible to configure the Line Alarm Indication (Ring) Port Interface
to use the internally or externally available information.
When sink and source are handled on one device, the internal ring port can be used
(ExternalSourceSelect deasserted). The Transmit Line Alarm Indication (Ring) Port
Interface leads must then be connected to VSS.
Figure 41
-
High Order Pointer Tracking, Retiming and Pointer Generation
shows the use of the internal Line Alarm Indication (Ring) Port Interface.
Figure 41. Internal Line Alarm Indication (Ring) Port Interface
Tx Line Interface
TOH
Generator
Line Alarm
Indication
(Ring) Port
Rx Line Interface
TOH Monitor
aRDI
REI
PHAST-12N
-
1 2 4 o f 2 0 2
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