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RFC 5098

Signaling MIB for PacketCable and IPCablecom Multimedia Terminal Adapters (MTAs)

Pages: 79
Proposed Standard
Errata
Updated by:  9141
Part 1 of 3 – Pages 1 to 6
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Top   ToC   RFC5098 - Page 1
Network Working Group                                         G. Beacham
Request for Comments: 5098                                Motorola, Inc.
Category: Standards Track                                       S. Kumar
                                                       Texas Instruments
                                                        S. Channabasappa
                                                               CableLabs
                                                           February 2008

              Signaling MIB for PacketCable and IPCablecom
                  Multimedia Terminal Adapters (MTAs)

Status of This Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Abstract

This memo defines a portion of the Management Information Base (MIB) for use with network management protocols in the Internet community. In particular, it defines a basic set of managed objects for Simple Network Management Protocol (SNMP)-based management of PacketCable- and IPCablecom-compliant Multimedia Terminal Adapter devices.
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Table of Contents

1. The Internet-Standard Management Framework ......................2 2. Introduction ....................................................2 3. Terminology .....................................................3 3.1. MTA ........................................................3 3.2. Endpoint ...................................................3 3.3. L Line Package .............................................4 3.4. E Line Package .............................................4 4. Overview ........................................................4 4.1. Structure of the MIB .......................................5 4.2. pktcSigMibObjects ..........................................5 4.3. pktcSigConformance .........................................6 5. Definitions .....................................................6 6. Examples .......................................................69 7. Acknowledgments ................................................72 8. Security Considerations ........................................73 9. IANA Considerations ............................................75 10. References ....................................................75 10.1. Normative References .....................................75 10.2. Informative References ...................................76

1. The Internet-Standard Management Framework

For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410]. Managed objects are accessed via a virtual information store, termed the Management Information Base or MIB. MIB objects are generally accessed through the Simple Network Management Protocol (SNMP). Objects in the MIB are defined using the mechanisms defined in the Structure of Management Information (SMI). This memo specifies a MIB module that is compliant to the SMIv2, which is described in STD 58, RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580 [RFC2580].

2. Introduction

A multimedia terminal adapter (MTA) is used to deliver broadband Internet, data, and/or voice access jointly with telephony service to a subscriber's or customer's premises using a cable network infrastructure. An MTA is normally installed at the customer's or subscriber's premises, and it is coupled to a multiple system operator (MSO) using a hybrid fiber coax (HFC) access network. An MTA is provisioned by the MSO for broadband Internet, data, and/or voice service. For more information on MTA provisioning, refer to
Top   ToC   RFC5098 - Page 3
   the PacketCable Provisioning Specification [PKT-SP-PROV] and
   [RFC4682].  MTA devices include one or more endpoints
   (e.g., telephone ports), which receive call signaling information
   to establish ring cadence, and codecs used for providing telephony
   service.  For more information on call signaling, refer to the
   PacketCable Signaling Specification [PKT-SP-MGCP] and [RFC3435].
   For more information on codecs refer to the PacketCable Audio/Video
   Codecs Specification [PKT-SP-CODEC].

   Telephone systems are typically very complex and often have a wide
   distribution.  It is therefore important for management systems to
   support MTAs from multiple vendors at the same time, including those
   from multiple countries.  This MIB module provides objects suitable
   for managing signaling for MTA devices in the widest possible range
   of markets.

3. Terminology

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119]. The terms "MIB module" and "information module" are used interchangeably in this memo. As used here, both terms refer to any of the three types of information modules defined in Section 3 of RFC 2578 [RFC2578].

3.1. MTA

An MTA is a PacketCable or IPCablecom compliant device providing telephony services over a cable or hybrid system used to deliver video signals to a community. It contains an interface to endpoints, a network interface, codecs, and all signaling and encapsulation functions required for Voice-over IP transport, call signaling, and Quality of Service signaling. An MTA can be an embedded or standalone device. An Embedded MTA (E-MTA) is an MTA device containing an embedded Data Over Cable Service Interface Specifications (DOCSIS) Cable Modem. A Standalone MTA (S-MTA) is an MTA device separated from the DOCSIS Cable Modem by non-DOCSIS Media Access Control (MAC) interface (e.g., Ethernet, USB).

3.2. Endpoint

An endpoint or MTA endpoint is a standard telephony physical port located on the MTA and used for attaching the telephone device to the MTA.
Top   ToC   RFC5098 - Page 4

3.3. L Line Package

The L line package refers to the Media Gateway Control Protocol (MGCP) package for the core signaling functionality, as defined by PacketCable and IPCablecom. An MTA provides all L package elements: however, the operator determines their application.

3.4. E Line Package

The E line package refers to the MGCP package extensions, over and above the core L package, defined in support of international requirements. E line package elements are optional, vary from country to country, and are set by operator or regulatory requirements.

4. Overview

This MIB module provides a set of objects required for Multimedia Terminal Adapter (MTA) devices compliant with the PacketCable and IPCablecom signaling specifications published by CableLabs, the European Telecommunications Standards Institute (ETSI), and the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) IPCablecom compliant Multimedia Terminal Adapter (MTA) devices. The Signaling MIB module (PKTC-IETF-SIG-MIB) is intended to update various Signaling MIB modules from which it is partly derived: - the PacketCable 1.0 Signaling MIB Specification [PKT-SP-MIB-SIG-1.0], - the PacketCable 1.5 Signaling MIB Specification [PKT-SP-MIB-SIG-1.5], - the ITU-T IPCablecom Signaling MIB requirements [ITU-T-J169], - the ETSI Signaling MIB [ETSI-TS-101-909-9]. The ETSI Signaling MIB requirements also refer to various signal characteristics defined in [ETSI-TS-101-909-4], [ETSI-EN-300-001], [ETSI-EN-300-659-1], [ETSI-EN-300-324-1] and [ETSI-TR-101-183]. Several normative and informative references are used to help define Signaling MIB objects. As a convention, wherever PacketCable and IPCablecom requirements are equivalent, the PacketCable reference is used in the object REFERENCE clause. IPCablecom compliant MTA devices MUST use the equivalent IPCablecom references.
Top   ToC   RFC5098 - Page 5
   This MIB module describes the various Signaling MIB objects that are
   directly related to the PacketCable MTA and the endpoints supported
   on the MTA, each of which provides services independently.  The
   recognition and distinction of the endpoints are made by utilizing
   the ifTable (IF-MIB [RFC2863]), where each index (ifIndex) value
   refers to a unique endpoint.  This MIB module also utilizes the
   syntax definition of the Differentiated Services Code Point (DSCP)
   from DIFFSERV-DSCP-TC [RFC3289] for defining MIB objects that allow
   for differentiation between various types of traffic in the service
   provider network.

4.1. Structure of the MIB

This MIB module is identified by pktcIetfSigMib and is structured into two major parts: - Signaling information that controls device and endpoint configuration (pktcSigMibObjects) - Module Conformance information(pktcSigConformance) The following sections explain each part in further detail. It is to be noted that future enhancements to specify Notification Objects are also allowed (pktcSigNotification).

4.2. pktcSigMibObjects

This is further divided into device-specific elements (pktcSigDevObjects) and endpoint-specific elements (pktcSigEndPntConfigObjects). Some highlights of the device-specific elements are as follows: pktcSigDevCodecTable - this object identifies the codec types available on the device. pktcSigDevEchoCancellation - this object identifies the capability of echo cancellation on the device. pktcSigDevSilenceSuppression - this object specifies if the device is capable of silence suppression (Voice Activity Detection). pktcSigPulseSignalTable - this table selects the various signals used in the application of the metering pulse signal to the twisted pair line. pktcSigDevToneTable - this table specifies a flexible structure within which to specify all of the tones used in the MTA.
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   pktcSigDevMultiFreqToneTable - this table defines the characteristics
   of tones with multiple frequencies.  Each entry in this table
   represents the frequency reference of a multi-frequency tone.

   The endpoint-specific elements are mostly confined to the Endpoint
   configuration MIB table (pktcSigEndPntConfigTable).  This table
   describes the MTA endPoint configuration.  The number of entries in
   this table represents the number of provisioned endpoints.

4.3. pktcSigConformance

pktcSigDeviceGroup - this group contains all the MIB objects that apply on a per-device basis and need to be implemented by an MTA to claim compliance with the specified MIB module. pktcSigEndpointGroup - this group contains all the MIB objects that apply on a per-endpoint basis and need to be implemented by an MTA to claim compliance with the specified MIB module. pktcLLinePackageGroup - this group contains the MIB objects that need to be implemented to support the L line package. pktcELinePackageGroup - this group contains the MIB objects that need to be implemented to support the E line package. pktcInternationalGroup - this group contains optional MIB objects designed to support operations over the widest possible range of markets.


(page 6 continued on part 2)

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