Test Report Data Communications Competence Center January 2014

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1 Test Report Data Communications Competence Center January 2014 Voice, Data, Power, and Video Application Channel Test Report Summary Testing was performed to show the capability of enhanced Category 6 channels under stressed conditions with several applications running simultaneously. Berk-Tek cables with Leviton connectivity were used to form channels. Additionally, four different competitor channels were also tested. Berk-Tek enhanced Category 6 products LANmark TM and LANmark TM exhibited superior performance. Under the same conditions, the LANmark-1000 and LANmark-2000 products allowed for fewer errors in transmitted data, higher quality voice communication, and cleaner video. Background An increasing number of applications are becoming capable of operating over IP (internet protocol) networks. Using the same links to transmit voice, data, and power allows for simpler IT organization and improved efficiency. Category 6 channels are capable of sending data, delivering power (PoE Power over Ethernet), transmitting voice (VoIP Voice over Internet Protocol), and can provide video with IPTV (Internet Protocol Television) systems. As new and better IP equipment is developed and networks migrate to converged applications, it is important to have strong channel performance to support voice, data and power. Installed channels may be exposed to environmental effects in the unconditioned spaces where the cables tend to be installed. For example, cables installed in unventilated ceiling spaces can heat up during hot months. If power cables are run in nearby pathways, electrical interference can occur. These effects were included in the test setup to provide worst-case compliant installation conditions. Equipment The testing was performed at the Data Communications Competence Center using the following equipment: IXIA Test Chassis with 1000BASE-T Card ESPEC Environmental Chamber HAEFLY PEFT 4010 Cisco PoE small business managed switch Cisco VoIP Phones Page 1 of 7 NHCC January 24, 2014

2 Test Setup Category compliant 100m four connector channels were built using a selection of horizontal cables and connectivity. Specifically, Berk-Tek tested: Two (2) off-the-shelf Category 5e channels Three (3) off-the-shelf minimally compliant Category 6 channels, A competitor CAT 6 enhanced channel with off-the-shelf connectivity A competitor CAT 6 premium channel with off-the-shelf connectivity LANmark TM enhanced CAT 6 cable using Leviton connectivity LANmark TM premium CAT 6 cable using Leviton connectivity The channels were placed into the test setup and used to support typical applications for category cabling. Computer data, VoIP packets, and IPTV packets were transmitted over the channels. The channels were also supplying power (PoE) to VoIP phones. Power cables were positioned in a cable run near a segment of the channels under test. This exposed the channels to electrical fast transient (EFT) noise. A 75 meter section of the channels were conditioned to the elevated temperature of 75 C (167 F). The test setup is illustrated in Figure 1. Figure 1: Test Setup Diagram All channels were tested under the same conditions with the same equipment ports, phones, and settings. They were conditioned to the same temperature and exposed to the same electromagnetic noise levels in the same physical layout. IxChariot and IxExplorer software were used with the Ixia test chassis to measure the performance metrics of the channels under test. Test duration was one hour and at least five tests were repeated for each sample to generate an average result. Data, VoIP, PoE, and IPTV traffic was sent and measured simultaneously. Page 2 of 7 NHCC January 24, 2014

3 Measured Metrics Metrics used to evaluate the performance of the channels include quality of service metrics for both VoIP and IPTV, and the number of frames dropped from the data transmission. Video (IPTV) and voice (VoIP) network traffic need to arrive in a timely manner. With the protocols used in these communications, for example RTP over UDP (Real-time Transport Protocol over User Datagram Protocol), lost, dropped, or out-of-order packets would not be recovered and the user would experience a reduction in quality. MOSCQE as VoIP QoS Measure For VoIP, the quality metric was Mean Opinion Score Call Quality Estimated (MOSCQE). This metric is made in an objective, quantitative manner based on network performance metrics such as one-way delay, latency, and packet loss. This quality of service metric can be used to estimate the expected amount of user satisfaction. MOSCQE values greater than 3.60 are needed, as this is generally considered a minimally acceptable score. MOS scores of 4.0 or greater are desired, with 4.6 being the approximate highest score realized as the score is based on a mean, and few users ever give a perfect 5.0 score. Lower MOSCQE values indicate less user satisfaction with the service. In Table 1, the expected user satisfaction values are listed. MOS CQE Expected User Satisfaction 4.34 MOS CQE 5.00 Very Satisfied 4.03 MOS CQE < 4.34 Satisfied 3.60 MOS CQE < 4.03 Some Users Dissatisfied 3.10 MOS CQE < 3.60 Many Users Dissatisfied 2.58 MOS CQE < 3.10 Nearly All Users Dissatisfied MOS CQE < 2.58 All Users Dissatisfied Table 1: Expected User Satisfaction MLR as IPTV QoS Measure IPTV quality is typically recorded as the Media Delivery Index (MDI). The MDI is made of the Delay Factor (DF) and the Media Loss Rate (MLR). This test set focused on the MLR component, which can be affected by loss of packets and other issues typical to stressed channels. Any non-zero MLR can reduce video quality through distortions and irregularities. Therefore, an absolute minimum MLR value is desired. A maximum average MLR value for standard definition video codecs is 0.004, but HDTV quality requires this value to be even lower. Page 3 of 7 NHCC January 24, 2014

4 The quality metric used for the computer data packet transmission in this test set was the number of Frame Errors over the test duration of one hour (Frame Error Rate or FER). Frame errors caused by stresses on the channel are undesirable. Depending on the protocol being used, frame errors can be detected and the data can be retransmitted. However, for optimum performance, it is best to have a minimum frame error rate. As the tests were of the same duration, we can perform a simple comparison of the number of frame errors. Test Results Table 2 shows the initial results of the testing. This data is also displayed in Figures 2, 3, and 4. The LANmark-1000 and LANmark-2000 products had superior results for the tested metrics. The competitor channels and the Category 5e products had the worst results by the tested metrics. Cable EFT Voltage (V) Temperature ( C) VoIP MOS CQE Min Frame Errors IPTV MLR Max CAT 5e CAT Comp B CAT 6e Comp A CAT 6E LANmark LANmark Table 2: Test Results Figure 2: VoIP MOS CQE : Higher Values are Superior Page 4 of 7 NHCC January 24, 2014

5 Figure 3: IPTV Maximum Media Loss Rate Lower Values are Superior Figure 4: Frame Errors: Lower Values are Superior Page 5 of 7 NHCC January 24, 2014

6 Conclusions The LANmark-1000 and LANmark-2000 products had the best performance of the channels tested for voice, data, and power. The number of frame errors and the IPTV quality metric are both optimum. The VoIP metric for these products was the best for the products tested under these conditions. Page 6 of 7 NHCC January 24, 2014

7 Data Communications Competence Center Berk-Tek s Data Communications Competence Center, located at our Headquarters in New Holland, Pennsylvania, focuses on advanced product design, applications and materials development for networking and data communication cabling solutions. The Advanced Design and Applications team uses state of-the-art, proprietary testing and modeling tools to translate emerging network requirements into new cabling solutions. The Advanced Materials Development and Advanced Manufacturing Processes teams utilize sophisticated analytical capabilities that facilitate the design of superior materials and processes. The Standardization and Technology group analyzes leading edge and emerging technologies and coordinates data communication standardization efforts to continuously refine Berk-Tek s Technology Roadmap. An international team of experts in the fields of cable, connectors, materials, networking, standards, communications and testing supports the competence center. The competence center laboratories are a part of an extensive global R&D network. 132 White Oak Road, New Holland, PA USA Tel: Fax: Page 7 of 7 NHCC January 24, 2014

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