ANSI_SCTE 137-1 2010.pdf

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• The server-to-client-to-server handshake continually repeats, assuring that a tight synchronization can bemaintained.The DTI protocol and components support accurate and robust transport of the server 10.24 MHz master clock and32-bit DOCSIS timestamp to the client within a node or building. The protocol is structured to minimize thecomplexity and cost of the client clocks and the per port cost of the shared server function while supporting all theDOCSIS S-CDMA, TDMA, and future T-Services timing requirements in a modular system.The high accuracy (
2 REFERENCES2.1 Normative ReferencesThe following documents contain provisions, which, through reference in this text, constitute provisions of thisstandard. At the time of publication, the editions indicated were valid. All standards are subject to revision, andparties to agreement based on this standard are encouraged to investigate the possibility of applying the most recenteditions of the documents listed below.[RFI2] ANSI/SCTE 79-1 2009 DOCSIS 2.0 Part 1: Radio Frequency Interface[G.812] ITU-T Recommendation. Gr.812, Timing Requirements of slave clocks suitable for use asnode clocks in synchronization networks, June 1998.[G.823] ITU-T Recommendation. Gr. 823, The control of jitter and wander within digital networkswhich are based on the 2048 kbit/s hierarchy, March 2000.[G.824] ITU-T Recommendation. Gr. 824, The control of jitter and wander within digital networkswhich are based on the 1544 kbit/s hierarchy, March 2000.[GR1244] Telcordia, Clocks for the Synchronization Network: Common Generic Requirements,December 2000.[IEEE 802.3] IEEE Std. 802.3-2002, Part3: Carrier Sense Multiple Access with Collision Detection(CSMA/CD) access method and physical layer specifications, March 8, 2002.[T1.101] ANSI T1.101, Synchronization Interface Standard T1.101-1999, September 7, 1999.2.2 Informative ReferencesThis specification uses the following informative references.[DEPI][ERMI][MOSSI]SCTE 137-2 2007, DOCSIS Downstream External PHY Interface.ANSI/SCTE 137-4 2007, Edge Resource Manager Interface.SCTE 137-3 2010, M-CMTS Operations Support System Interface.2.3 Reference Acquisition• American Institute of Electrical Engineers, Internet: http://www.ieee.org/portal/site• American National Standards Institute, Internet: http://webstore.ansi.org• International Telecommunications Union (ITU), Internet: http://www.itu.int• Internet Engineering Task Force (IETF), Internet: www.ietf.org• Telcordia Technologies, Internet: http://telecom-info.telcordia.com5
Page 4 and 5: 7.2.6 DTI Client Test Port ........
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Page 8 and 9: 1.1.3 Modular Implementation Requir
Page 12 and 13: 3 TERMS AND DEFINITIONSThis specifi
Page 14 and 15: S-CDMATBDTDMTDMAT-ServicesUDPUSUTCS
Page 16 and 17: RJ45 Pin Number Signal Comment4 NC5
Page 18 and 19: 6.2 DTI Timing StructureFigure 6-1
Page 20 and 21: 6.3.1 GPS Frequency ModeIn order to
Page 22 and 23: In the server to client direction,
Page 24 and 25: Bit 7-0:This field contains the sub
Page 26 and 27: The path traceability field start o
Page 28 and 29: Table 6-5 - DTI Client Frame Struct
Page 30 and 31: Bit 8: Data Valid BitThe Client DTI
Page 32: 7 DTI CLIENT AND SERVER OPERATIONTh
Page 35 and 36: 1.0E+041.0E+03DegradedAcceptableMTI
Page 37 and 38: 10 µsecMTIE1 µsec100 nsec0.1 sec
Page 39 and 40: In automatic cable advance mode, th
Page 41 and 42: 7.2.3 DTI Client Mode Transition Di
Page 43 and 44: 7.2.4 Functional RequirementsThe cl
Page 45 and 46: 10.24MHz Phase AlignmentClient10.24
Page 47 and 48: 7.3 DTI Distribution Fallback Strat
Page 49 and 50: Annex ARanging Wander Qualification
Page 51 and 52: Annex BDTI-MIB (normative)DTI-MIB D
Page 53 and 54: dtiProtocolServerToDStatedtiProtoco
Page 55 and 56: timing reference.'normalMode'The cl
Page 57 and 58: ::= { dtiProtocolEntry 11 }dtiProto
Page 59 and 60: The Test Mode consist in a sequence
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MAX-ACCESS read-onlySTATUS currentD
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dtiProtocolClientFsmStatsT7Count OB
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MAX-ACCESS read-onlySTATUS currentD
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version 4.'gps' indicates support o
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-- unconditionally mandatory groups
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Appendix IDTI Server Functional Des
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Appendix IIDTI Client Functional De
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II.2DTI Client Frame ProcessorA blo
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delay the integer portion of the se
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The output of the DTI server is a M
Page 81 and 82:
Appendix IV Symbol Clock Synchroniz
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Least Sig. BitLeast Significant Bit
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VI.2On the other hand, if the MAP i
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