Alcatel 1850 TSS-320 Technical Handbook page 83

• Lower Order Supervisory Unequipped Termination (LSUT): Sms_TT
For VC-3 LO tributaries (m=3), refer to Sns_TT functions described in section 3.4.1.1 on page
71.
For other LO tributaries:
Sms_TT_Sk
J2:
V5[3]:
V5[8]:
V5[5-7]: Signal Label Monitoring --> UNEQ and VC-AIS detection.
V5[1-2]: VC-m BIP-2 Errored Block Count.
Sms_TT_So
Generation of an unequipped container and frame offset.
V5[5-7]: "unequipped" insertion.
J2:
V5[3]:
V5[8]:
V5[1-2]: VC-4 Bip-8 calculation and insertion.
• Lower Order Tandem Connection Trail Termination: SmD_TT
For Sonet tributaries the functions is not applied. For SDH VC-3 LO tributaries (m=3), refer to
SnD_TT functions described in section 3.4.1.1 on page 71.
For SDH VC-12 tributaries, the follow applies:
SmD_TT_Sk
N2[1-2]: VC-12 BIP-2 extraction and EDC calculation.
N2[8][73]:RDI extraction.
N2[5]:
N2[7][74]:ODI extraction (Outgoing Defect Indication).
N2[6]:
N2[7-8]: extraction from the multiframed channel N2[7-8] of:
V5[1-2]: BIP-2 compensation.
SmD_TT_So
N2[8][73]:RDI insertion.
N2[5]:
N2[7][74]:ODI insertion (Outgoing Defect Indication).
N2[6]:
N2[7-8]: insertion in the multiframed channel N2[7-8] of:
N2[1-2]: BIP-2 calculation and insertion.
V5[1-2]: BIP-2 compensation
.
Technical Handbook Common
Functional Description
Path Trace information is recovered.
The REI information is recovered.
Path Status monitoring detection.
trail trace identifier is generated.
insertion of REI information.
insertion of RDI information.
REI extraction.
OEI extraction (Outgoing Error Indication).
FAS (Frame Alignment Signal) in frames 1 to 8.
trace identifier in frames 9 to 72.
TC RDI and ODI in frames 73 to 76.
REI insertion.
OEI insertion (Outgoing Error Indication).
FAS (Frame Alignment Signal) in frames 1 to 8.
trace identifier in frames 9 to 72.
TC RDI and ODI in frames 73 to 76.
Alcatel 1850 TSS-320 Rel. 1.1
8DG 07734 AAAA Edition 01 81/270