TXC-06312BIOG Transwitch Corporation, TXC-06312BIOG Datasheet - Page 117

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

Specifications of TXC-06312BIOG

• Lead Free Status / Rohs Status: Supplier Unconfirmed

1 1 7 o f 2 02
11.6.2 High Order Path Overhead Monitor
The PHAST-12N monitors the high order path overhead bytes on all incoming high order
channels and terminates the path overhead bytes on all dropped channels.
• The N1 byte will be inserted from
• Optionally insertion of VC-AIS, resulting in the insertion of all 1’s in the entire VC
• Optionally insertion of Unequipped, resulting in the insertion of all 0’s in the entire VC
• Optionally insertion of Supervisory Unequipped, resulting in the insertion of all 0’s in the
• Optionally bypass the POH generation: the entire high order path is just passed through
• Optionally the single, 16 or 64 byte Trail Trace Identifier in the J1 byte will be monitored
• Optionally the accepted Trail Trace Identifier and stable indications will be reported for
• BIP-8 will be calculated over all bits of the preceding VC-n frame and will be compared to
• Received C2 is debounced on a 5 frames basis
• If one or more errors are indicated by the REI G1, the FarEndDefect_Counter will be
• The transmit POH RAM
• The transmit POH byte interface
entire VC except for the POH bytes J1, B3 and G1
and the dTIM and dTTIZERO defects will be detected. For more information about the
TTI process see
one configurable high order path. For more information about the reporting of TTI see
“Trail Trace Identifier Process” on page 137
the B3 byte of the current frame
• If one or more errors are detected, both a NearEndDefect_BlockCounter (1 block = 1
• The error counter per frame will be forwarded to the internal and external ring ports as
• The dDEG defect will be detected for bursty or Poisson error distributions. For more
• The dEXC defect will be detected for Poisson error distribution. For more information
• During incoming SSF, the counters are not updated and the value 0 is forwarded to the
• Accepted C2 is reported
• Changes in accepted C2 are reported
• The dUNEQ defect will be detected when the accepted C2 equals the unequipped
• The dAIS defect will be detected when the accepted C2 equals the AIS activation
• The dPLM defect will be detected when the accepted C2 does not equal the expected
updated.
• Optionally bit errors will be counted
- High Order Pointer Tracking, Retiming and Pointer Generation -
frame with 1 or more bit errors) and a NearEndDefect_BitCounter will be updated
REI indication
information about these processes see
about this process see
ring ports
activation pattern 0x00
pattern 0xff
TSL code or the “equipped non-specific” 0x01
“Trail Trace Identifier Process” on page 137
“BER Supervision for B2/B3” on page 134
“BER Supervision for B2/B3” on page 134
PRELIMINARY TXC-06312B-MB, Ed. 2
PHAST-12N Device
DATA SHEET
TXC-06312B
June 2005