Cisco Wireless and voice issue

[silvio.compri80]

Hello guys,

thankyou for your support.

I have this scenario:

-One Cisco Virtual Wireless Controller ver 8.5.103.0

-20 Cisco 1832i AP

-Ascom i62 wireless phone

The problem is:

when two wireless phone are connected on the different AP (not the same AP) the people can talk perfectly

when two wireless phone are connected under the same AP, the people don't hear the voice

this behavior over all APs

Thank you for your reply

[Flavio Miranda]

Hello,

 That´s an interesting problem cause make no sense at first glance. Between  different APs if they were on different VLANs for example, could be a network issue, but under the same AP, I mean, under the same BSSID, very unusual.

 Can you share the WLC config with us?

-If I helped you somehow, please, rate it as useful.-

[silvio.compri80]

Here we go.

I attached the conf file.

Thank you for your help

If you need something else let me know

[Flavio Miranda]

show running-config commands my be not enough, could you send show run-config instead ?

[silvio.compri80]

you're right.

I hope to have save the file correct

[Flavio Miranda]

I could see that you are using Flexconnect AP group but looks like your WLAN is Local Switched, right?  Is there any reason for that? If possible, I´d try Local mode APs and WLAN.

[silvio.compri80]

Thankyou Flavio,

i think 1800 series can not works in the local mode, am I wrong?

[Flavio Miranda]

Did you read that somewhere ?

I didn´t see this, actually it does not support flexconnect on its early version.

Deployment modes:

Centralized, standalone, sniffer**
, Cisco FlexConnect™
, monitor**
, OfficeExtend**
, mesh**

https://www.cisco.com/c/en/us/products/collateral/wireless/aironet-1830-series-access-points/datasheet-c78-735582.pdf

-If I helped you somehow, please, rate it as useful.-

[silvio.compri80]

https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn85.html

[silvio.compri80]

https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn85.html

[Flavio Miranda]

Table 6 Key Features """"Not Supported"""" in Cisco Aironet 1800i, 1810 OEAP, 1810W, 1815, 1830, 1850, 2800 and 3800 Series APs:

Autonomous Bridge and Workgroup Bridge (WGB) mode
Mesh mode
Flex + Mesh
802.1x supplicant for AP authentication on the wired port
LAG behind NAT or PAT environment

Local more is not on the Not supported list.

-If I helped you somehow, please, rate it as useful.-

[Leo Laohoo]

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@silvio.compri80 wrote:

when two wireless phone are connected on the different AP (not the same AP) the people can talk perfectly when two wireless phone are connected under the same AP, the people don't hear the voice this behavior over all APs

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From where I work, we constantly badger ASCOM for an interoperability report.  As far as I'm aware, there is no interoperability report for 8.5.103.0.  

Next, are the phones operating in 802.11n or not?  If they are, turn 802.11n off (on the phone and not on the network).  

Dropped calls sounds like TSPEC is enabled on the phone but it's not enabled on the APs.  Go to Wireless > 802.11a/n/ac (or 802.11 b/g/n) > Media.  Under Admission Control (ACM) must be enabled and Expedited bandwidth must be enabled.  

[Brian Taylor · Accepted solution]

Do you have P2P blocking enabled on the SSID?

[silvio.compri80 · Accepted solution]

Hello Brain, 

Yes P2P is enable

Thankyou

[silvio.compri80]

Thankyou all for the efford.

P2P enabled blocked rtp traffic in the same AP.

thankyou Brian