PM5364 pmc-sierra, PM5364 Datasheet - Page 113

• Manufacturer Part Number: PM5364
• Description: Tupp 2488 Assp Telecom Standard
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2011334, Issue 7
Table 11 Typical Tributary Trace Message Format (SONET)
Table 12 Typical Trail trace Identifier Format (SDH)
The entire tributary trace message or trail trace identifier (i.e., the collection of 64 or 16 bytes)
is sometimes referred to as a multiframe.
The RTTB336 can be configured for either SONET or SDH compatible operation. When
configured for SONET compatible operation, the RTTB336 processes the tributary trace
message within the path trace (J2) byte of the virtual tributaries carried in an incoming STS-12
synchronous payload envelope. Each of the eighty-four tributary groups (VT groups) may be
independently configured to accept any one of the four tributary types (VT1.5, VT2, VT3, and
VT6).
When configured for SDH compatible operation, the RTTB336 processes for an incoming
STM-4, the trail trace identifier within (a) the path trace (J2) byte of the tributaries carried in
TUG2 tributary unit groups within VC3 virtual containers, (b) the path trace (J2) byte carried in
TUG3 tributary unit groups in VC4 virtual containers, or (c) the path trace (J1) byte of TU3
tributary units carried in TUG3 tributary unit groups of VC4 virtual containers. Each of the four
STM-1’s within the STM-4 may be independently configured to accept one of (a), (b) or (c).
Each TUG2 may be independently configured to accept any one of the three tributary types
(TU-11, TU-12, and TU-2). Note that since the RTTB336 only processes the J1/J2 bytes of
tributary units, it does not process the J1 byte of a VC4.
Two algorithms are defined for processing the tributary trace message and trail trace identifier.
Algorithm 1 is TELCORDIA and ANSI compliant and is typically used in SONET. It detects
Trace Identifier Mismatch (TIM) on a 16 or 64 byte tributary trace message. Algorithm 2 is
ITU-T compliant and is typically used in SDH. It detects Trace Identifier Unstable (TIU) and
TIM on a 16 or 64 byte trail trace identifier.
0XXX XXXX
0XXX XXXX
0XXX XXXX
0000 1101
0000 1010
1XXX XXXX
0XXX XXXX
0XXX XXXX
. .
. .
. .
. .
. .
. .
Byte 1 - ASCII printable [i.e., 20H through 7EH]
Byte 2 - ASCII printable [i.e., 20H through 7EH]
Byte 62 - ASCII printable [i.e., 20H though 7EH]
Byte 63 - Carriage-Return
Byte 64 - Linefeed
Trace identifier Frame Alignment Signal (TFAS)
Byte 2
Byte 16
TUPP™ 2488 ASSP Telecom Standard Product Data Sheet
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