Minimum RSSI for Data WLAN

[CiscoJon]

I noticed on Cisco live material (link below) it recommends -67 dBm RSSI is minimum for a WLAN.  I know it was always -80 dBm for a data and -67 dBm for voice WLAN from various Cisco books and course materials but has this recommendation changed now?   https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/BRKEWN-2019.pdf

For the purposes of Cisco exams is it still -80 dBm?     

[Daniel Ordóñez Flores]

Hi @CiscoJon 

I don´t think the recommendation has changed, I believed the documents is talking about a good practice, because if your haves these values (-67dbm, 25SNR, 20% for overlap) you network will be ready to offer a good service, I mean, If is ready for voice, for sure will be ready for data.

books for exam still talking about   (-67dbm, 25SNR, 20% for overlap)  for voice services.

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[CiscoJon]

Hi

Right, when they talk about VOICE they always specify -67 dBm minimum RSSI but they used to recommend a lower minimum for data of -80 dBm for a data only WLAN.  Is the minimum for all types (data, voice, high density and location) now -67 dBm RSSI?  

[patoberli · Accepted solution]

Today many people tend to use video and audio conferencing on their notebooks, or even calling with WhatsApp. For those cases a good wireless signal is to be preferred. Also most much faster speeds from recent standards can only be reached with a strong signal. Roaming also works much better with enough overlap at a medium signal strength.