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Generic Requirements for Packet Voice Integrated Digital Loop Carrier (PV-IDLC) System


Document Number GR-3109
Issue Number 01
Issue Date Apr 2003
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    ABSTRACT: While distributed, open service interface, switching architectures ("softswitch" architectures) offer great promise in improving
    telephony services in the 21st century, the large embedded base of class 5 local digital switching systems will continue to provide
    dial tone services for many years to come. Service providers with a large embedded base of class 5 digital switching systems are
    deploying broadband access systems to their residential and small/medium business customers. These service providers need to maximize
    the service potential of their broadband access facilities by providing a mixture of narrowband and broadband multimedia services,
    including voice services.

    Integrated Digital Loop Carrier (IDLC) access systems have provided an important platform for voice service transport to embedded
    class 5 local digital switching systems for over 15 years. GR-3109, Generic Criteria for Packet Voice Integrated Digital Loop Carrier
    (PV-IDLC) Systems, helps access system and device suppliers leverage this proven network access interface by providing valuable
    information on what existing Telcordia access network generic criteria (GR) should be applied to the PV-IDLC system, and what new
    criteria are necessary to help insure that PSTN-quality voice service is provided. Guidance is also provided to system and device
    suppliers on capabilities needed to effectively transition customer lines (on a per-line basis) to the emerging softswitch service
    environment. Applying GR-3109 criteria to packet voice access systems will assist system suppliers in avoiding undesirable system
    retrofits when interconnecting to a local exchange carrier's (LEC) emerging softswitch service environment.

    GR-3109 describes how existing Telcordia IDLC generic requirements should be applied to PV-IDLC systems and augments these generic
    requirements based on the unique challenges presented by packet voice transport and emerging broadband packet access architectures.
    The work defines a packet voice endpoint (PVE) function that exists in the network as part of a broadband Remote Digital Terminal
    (PVE-A), in the network as part of a FTTx ONU-like device (PVE-B), or in a customer-owned device (PVE-C). A Network Gateway (NGW)
    provides the network-side packet voice-to-TDM voice conversion and IDLC interface functions, as well as serving as a point for
    providing additional functionality in support of transitioning customer lines to the emerging softswitch service environment (e.g.,
    network protection, voice quality monitoring, conference bridging, and signaling concentration).

    GR-3109 provides system criteria on the PVE function(s), the NGW function, and the broadband access network (BAN) that interconnect
    these elements. System criteria addressed includes:
    • voice quality planning

    • voice quality control (e.g., loss insertion, packet loss, delay, and packet delay variation)

    • packet voice impairment mitigation

    • system failure behaviors

    • system behaviors during overload and congestion
      conditions


    When using GR-3109, you may need to refer to GR-8, GR-30, GR-57, GR-63, GR-303, TR-NWT-000397, GR-436,
    GR-454, GR-506,GR-511, GR-909, GR-1089, GR-1244, GR-3110, SR-332, ANSI/TIA/EIA 825, and ITU-T G.168.
    You may also need to refer to GR-78, TR-NWT-000179, GR-253, GR-418, GR-468, TR-NWT-000870, GR-929,
    GR-2853, TIA/EIA IS-641, and/or 3G TS 26.090.

    Components of this product are:
    GR-3109-CORE

    Table of Contents:

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