We do not recommend wireless networks for placing high-profile phone calls, such as conferences, press meetings, or executive calls. Short voice interruptions, less than 10 seconds, are to be expected and cannot be eliminated at the network level for wireless-connected desk phones.For example, GOVO sites or 24/7 call centers. Wireless-connected desk phones should not be used by high density/high voice call teams, such as agents or support teams.A larger number might create an unpredictable user experience. A realistic expectation is no more than 10 desk phones connected on the same AP.If a wireless network’s SSID is available on both bands (2.4 GHz and 5 GHz), the network should implement aggressive band steering to force clients onto the 5 GHz band. This forces a client’s handover to the closest AP while roaming between APs. Disable low rates to improve RF usage efficiency.Bigger cells can provide general coverage on the office floor. Deploy smaller cells where more devices are expected, such as meeting rooms and auditoriums to increase capacity. Manage cell size, which is controlled by the transmit power of the access point (AP).If you design a wireless network to support real-time applications, think about capacity rather than coverage. Reliable operation of real-time applications like Voice relies on adequate capacity, delay, jitter, and packet-loss levels, which are almost impossible to achieve over the 2.4 GHz band. The 2.4 Ghz band is problematic because it has only 3 non-overlapping channels, typically high noise levels from nearby interfering networks, and extra interference from other devices (microwaves, for example), creating a noisy and complex RF environment. This recommendation includes applications that provide connectivity in an ordinary office environment. We generally recommend that real-time applications not be deployed and operated over the (typically heavily used) 2.4 GHz band of a wireless network. Running real-time applications over a wireless network can be challenging because the underlying RF spectrum and bandwidth is shared among all the devices using it.Ĭarefully review the following considerations during the design, deployment, and operation of wireless networks used with Voice. A wireless engineer should evaluate on a case-by-case basis more complex environments, such as manufacturing floors, areas with high levels of radio frequency (RF) noise, or sparsely covered spaces. The following recommendations apply to typical office environments.
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