Polycom SoundStation 2W Test Report page 3

CT Labs Testing Report: Polycom SoundStation2W
Cellular Test Setup
Office #2
cellular
adapter
For the Cellular Test Setup (shown in Figure 3), the base unit and the wireless phone unit with the cellular
adapter attached were located within the CT Labs test facilities building, where a total of five walls separated
the base unit from the wireless phone unit. The base unit was not powered up for any of these tests. Two test-
ers (1 male, 1 female) performed a manual speech quality assessment in this configuration.
Summary of Subjective Tests Performed:
Installation and Configuration Evaluation:
free the installation and configuration of the unit were to perform, using only the provided vendor documentation.
Display and User Interface Evaluation:
tency, and ease-of-use of the product while using it to exercise as many of the phone's features as possible in the
time frame designated for this test.
Small Conference Room Tests:
1. Basic Conversation with Dynamic Range Test: The purpose of this test was to determine basic quality and the abil-
ity of the conference unit to handle varying sound levels. The participants in this test were positioned at fixed loca-
tions in the conference room. During the dynamic range portion of this test, the staff used a variety of voice loudness
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levels (loud, normal, quiet, and whispering).
2. Conversation + Background Noise Test: The purpose of this test was to determine the unit's ability to handle con-
versations in the presence of several typical office noise conditions. Two types of background noise were introduced:
(1) a single fan in a fixed location in the conference room and (2) a composite road traffic audio loop (3 minute dura-
tion) was played through speakers
street moderately busy with traffic.
3. Acoustic Echo Cancellation Test: The purpose of this test was to compare acoustic echo cancellation performance
of the units. The scripted actions in this test involved "real-world" movement scenarios, designed to duplicate people-
movement conditions that would typically occur during a conference call. For each scenario, the tester using the "far
end" telephone in the quiet office would quickly speak "One, two, three, four, five," while carefully listening for how
much of that utterance could be heard in a return echo.
4. Loudness Test: The purpose of this test was to verify speech quality at the highest volume level for each unit setting.
This test was performed with one person in the conference room using the conference phones, and one person in a
separate office using a desk phone handset. Only one conference unit was active at a time -- the base unit for the
other phone was unplugged when not in use. The peak volume output of each phone was measured in the conference
room while the desk phone user spoke in a very loud voice.
The purpose of this test was to verify the level of voice quality of the SoundStation2W conferencing
Cellular Tests:
phone unit while placing calls via a Nokia 2260 cellular phone on the AT&T Wireless TDMA network and the
PSTN. Comparisons with cell phone-to-PSTN calls were made to confirm that speech quality was as good as or
better than cell phone usage alone using the same test locations.
The purpose of this test was to determine the voice quality of the phone units at a distance of 30 to
Wireless Tests:
50 feet from their respective base units, with and without added RF interference from another wireless product oper-
ating in the vicinity of the conference unit.
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All loudness levels used during these tests were calibrated for each speaker using an SPL meter.
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Two small stereo speakers were used for mid-range and treble, and a single floor-mounted base woofer was used. All speakers
were positioned against the far conference room wall.
Office #1
Desktop
Telephone
35 feet
50 feet
CU
Figure 3: Cellular Test Setup
The purpose of this evaluation was to determine how easy and error-
The purpose of this evaluation was to determine the functionality, consis-
The following tests were performed in the small conference room setting:
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with the intention of creating sound levels consistent with a window opened onto a
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Conference Room
Base Unit