ANSI SCTE 112-2017 pdf free download – HMS / DOCSIS ® Transponder for Outside Plant Power Supply.
This document is identical to SCTE112 2011 except for informative components which mayhave been updated such as the title page,NOTICE text, headers and footers. No normativechanges have been made to this document.
This document contains the requirements for a “HMS / DOCSISRTransponder for Outside PlantPower Supply.”The HMS / DOCSISRtransponder is defined to be a device where the DOCSIScomponent has been developed or modified specifically for the HMS / DOCSIS Rapplication.This requirement leverages various HMS specifications and MIBS, as well as the DOCSISR1.1specifications and MIBS.
2.0 NORMATIVE REFERENCES
The following documents contain provisions, which, through reference in this text, constituteprovisions of this standard.At the time of publication, the editions indicated were valid.Allstandards are subject to revision, and parties to agreement based on this standard are encouragedto investigate the possibility of applying the most recent editions of the documents listed below.
2.1SCTE References
2.1.1 ANSI/SCTE 25-2 2008,Hybrid Fiber/Coax Outside Plant Status MonitoringMAC Layer
2.1.2 ANSI/SCTE 38-3 2008,Hybrid Fiber/Coax Outside Plant Status Monitoring SCTE-HMS-COMMON-MIB Management Information Base (MIB)
Definition
2.1.3 ANSI/SCTE 38-8 2005,Hybrid Fiber/Coax Outside Plant Status Monitoring
SCTE-HMS-DOWNLOAD-MIB Management Information Base (MIB)Definition
2.1.4 ANS1/SCTE81 2007,Surge Withstand Test Procedure
2.1.5 ANSI/SCTE 48-22008,Test Procedure for Measuring Relative Shielding
Properties of Active and Passive Coaxial Cable Devices Using H-P MagneticClose Field Probe
2.1.6 ANSI/SCTE 23-1 2005, DOCSIS 1.1 Part 1: Radio Frequency Interface
2.2 Standards from other Organizations
2.2.1 (ANSI) IEEE Std C62.41.2-2002IEC 61000-4-2:2008 Electromagnetic
compatibility (EMC)- Part 4-2: Testing and measurement techniques -Electrostatic discharge immunity test
DEFINITIONS AND ACRONYMS
CMTS: Cable Modem Termination System
DOCSIS ® : Data Over Cable Service Interface Specifications 1
HMS: Hybrid Management Sublayer.
HMTS: Hybrid Management Termination System.
Management Information Base (MIB): the specification of information in a manner that allows
standard access through a network management protocol.
NMS: Network Management System.
SNMP: Simple Network Management Protocol.
1 DOCSIS is a trademark of Cable Television Laboratories, Inc. (CableLabs ® )
5.0 INTRODUCTION This document is a combination of the functional and protocol requirements detailed in the HMS and the DOCSIS ® communication standards. In a system using “HMS / DOCSIS ® Transponder for Outside Plant Power Supply,” rather than the “HMS Transponder for Outside Plant Power Supply” protocol, the physical communication layer to the Network Management System is replaced with the DOCSIS ® communication layer. This eliminates the need for the HMTS in favor of using the CMTS. From a system perspective the “HMS / DOCSIS ® Transponder for Outside Plant Power Supply” and CMTS is equivalent to an HMS Transponder for Power Supply and HMTS, offering the same SNMP communications and functional behavior to the management systems.
6.0 REQUIREMENTS
The device SHALL be compliant with the requirements in Appendix A and the MIBS listed in Section 2.1, with the following exceptions and qualifications:
6.1 ANSI/SCTE 38-3 2008
All MIB tables and variables SHALL be implemented as specified, but the following tables SHALL NOT be implemented:
6.1.1 commonMACGroup, EXCEPT for the commonPhysAddress object, which SHALL be implemented.
6.1.2 commonMulticastGroup
6.1.3 commonStatsGroup
6.1.4 commonRfGroup
6.2 ANSI/SCTE 25-2 2008
At a minimum, the following requirements of ANSI/SCTE 25-2 2008 SHALL be implemented:
6.2.1 Appendix A:
A.2: Time of day must be obtained
A.2.1 Integer representation
A.3 Firmware download; optional method; See Section 6.3
A.5.1 Managed properties
A.5.2 Thresholds & operation
A.5.3 MIB
A.5.4 Alarm processing
A.8 Check code
6.3 ANSI/SCTE 38-8 2005
For the purposes of implementing firmware download, ANSI/SCTE 38-8 2005 and/or TFTP as implemented in the DOCSIS standard ANSI/SCTE 23-1 2005 SHALL be implemented.
6.4 Additional Trigger for Cold Start Trap
In the event of an IP address change the transponder SHALL issue a HMS Cold
Start Trap.
6.5 Optional Features
The compliant device MAY support enterprise-specific MIBS.ANSI SCTE 112 pdf download