{
    "identifier": "ark:\/88434\/mds2-2356",
    "accessLevel": "public",
    "contactPoint": {
        "hasEmail": "mailto:[email protected]",
        "fn": "Alison Kahn"
    },
    "programCode": [
        "006:045"
    ],
    "landingPage": "https:\/\/data.nist.gov\/od\/id\/mds2-2356",
    "title": "Mission Critical Voice Quality of Experience Access Time Measurement Method Addendum Data",
    "description": "These are measurement data associated with https:\/\/doi.org\/10.6028\/NIST.IR.8328. Code to process data is available at https:\/\/github.com\/usnistgov\/accessTime. Includes access delay measurement results for P25 Direct operating in unencrypted and encrypted modes, P25 Trunked Phase 1 and Phase 2 operating in unencrypted and encrypted modes, and an early development of a 3GPP compliant LTE MCPTT application server. Transmit audio and associated cutpoints files are also included.",
    "language": [
        "en"
    ],
    "distribution": [
        {
            "accessURL": "https:\/\/doi.org\/10.18434\/M32085",
            "format": "Git repository",
            "description": "The purpose of this software is to measure the access delay of a push-to-talk network. Access time generally describes time associated with the initialization and assignment of channels upon user request to speak and has been identified as a key component of quality of experience (QoE) in communications. NIST?s PSCR division developed a method to measure and quantify the access time of any push to talk (PTT) communication system.",
            "title": "accessTime Repository"
        },
        {
            "downloadURL": "https:\/\/data.nist.gov\/od\/ds\/mds2-2356\/Access%20Time%20Addendum%20Paper%20Data.zip.sha256",
            "mediaType": "text\/plain",
            "title": "SHA256 File for Example Access Time Addendum Paper Data"
        },
        {
            "downloadURL": "https:\/\/data.nist.gov\/od\/ds\/mds2-2356\/Access%20Time%20Addendum%20Paper%20Data.zip",
            "format": "zip",
            "description": "Measurement data associated with https:\/\/doi.org\/10.6028\/NIST.IR.8328. Code to process data is available at https:\/\/github.com\/usnistgov\/accessTime. Includes access delay measurement results for P25 Direct operating in an unencrypted and encrypted modes, P25 Trunked Phase 1 and Phase 2 operating in unencrypted and encrypted modes, and an early development of a 3GPP compliant LTE MCPTT application server. Transmit audio and associated cutpoints files are also included.",
            "mediaType": "application\/x-zip-compressed",
            "title": "Example Access Time Addendum Paper Data"
        }
    ],
    "bureauCode": [
        "006:55"
    ],
    "modified": "2021-02-08 00:00:00",
    "publisher": {
        "@type": "org:Organization",
        "name": "National Institute of Standards and Technology"
    },
    "theme": [
        "Public Safety:Public safety communications research"
    ],
    "keyword": [
        "Access delay; Articulation Band Correlation Modified Rhyme Test (ABC-MRT); A-weight; Encryption; Key performance indicator (KPI); Land mobile radio (LMR); Latency; Long Term Evolution (LTE); Mission Critical Push-to-Talk (MCPTT); Modified Rhyme Test (MRT); Mouth-to-ear (M2E); Packetized; Project 25 (P25); Public Safety; Push-to-talk (PTT); Quality of experience (QoE); Receive; Streaming; Transmit; Vocoder"
    ]
}