topic Hello in Wireless

voice Wlan issue

coskun sanli — Mon, 05 Jul 2021 14:21:44 GMT

we have cisco 5520 wireless controller and 2 different aps : AP1852E and AP1810W

device version is 8.2.151.0 .

we have voice ssid in the campus network

dect phones connected to voice ssid work properly inside the building without any delay or data loss during phone conversations

however , one of the floors in the building is surrounded with glass and the connection fails or conversation failures occur when the user is on this floor

what can be the reason behind this situation

I would suggest first check

Rasika Nayanajith — Wed, 19 Jul 2017 20:10:56 GMT

I would suggest first check the RF coverage in that floor. I would check what power level those AP operate as well.(assume you doing voice in 5GHz band)

If coverage is good, and failures are reproducible then do a "debug client <mac_addr>" output for one client while this issue is happening. That will give us some indication for client failure

HTH

Rasika

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Hello

coskun sanli — Thu, 20 Jul 2017 07:50:44 GMT

Hello

dect telephone use 802.11bg i guest 2.4Ghz

when we change 802.11a /802.11an telephone connect to ssid low signal

debug file attached post if you want see

can't see debug file is

Rasika Nayanajith — Thu, 20 Jul 2017 19:42:20 GMT

can't see debug file is attached. Pls check

If it is on 2.4GHz, it could be challenging to run voice services, unless you environment is very clean on 2.4GHz band.

Rasika

when the dect telephone use

coskun sanli — Fri, 21 Jul 2017 06:29:55 GMT

when the dect telephone use 802.11a /802.11an signal is very low

is it normal ? and a lots of disconnect

thank you for your advice

I would check what power

Rasika Nayanajith — Sat, 22 Jul 2017 07:43:17 GMT

I would check what power level AP operates & see you get proper coverage in 5GHz.

"show client detail <client_mac_addr>" output should provide some valuable information about RSSI,SNR to see if client get good signal.

HTH

Rasika