Wireless Access

Reply
Occasional Contributor II
Posts: 15
Registered: ‎05-05-2011

Alcatel 8118 VoIP Phones with high Latency

Hi,

 

I've a litte problem and I could not find the reason... I'm using an Aruba 3600 Controller with Software 6.1.2.4.

 

The voice clients have problems (there are all things configured for that such as WMM and so on). The client could stand 5 meters away from an AP and the Ping-Latenzy is up to 500 ms. I've checked the Way from Controller to the AP, all things fine.

 

I've searched for Multicast-Streams and so on, nothing to find. If the client makes a call, sometimes it works and sometimes when he moves on the voice quality is bad.

 

Don't know how 5 meters from an AP can resolute in those problems :-/

 

Are there any ideas what this problem could be? There are no interferences or something like that. The only strange thing is, that the client goodput is only 10 MBit/s. SNR is over 30, over 50... same thing on all Access-Points :-/

 

I'm using AP-93 with 2,4 GHz.

Guru Elite
Posts: 20,821
Registered: ‎03-29-2007

Re: Alcatel 8118 VoIP Phones with high Latency

What voice protocol is the Alcatel phone using?

 



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor II
Posts: 15
Registered: ‎05-05-2011

Re: Alcatel 8118 VoIP Phones with high Latency

alcatel uses noe

Occasional Contributor II
Posts: 15
Registered: ‎05-05-2011

Re: Alcatel 8118 VoIP Phones with high Latency

Ok,

 

in this moment i have found the problem. After activation 802.11k the ping is below 100ms. After deactivation the ping is instantly over 400 ms.

 

How could that be?

Guru Elite
Posts: 20,821
Registered: ‎03-29-2007

Re: Alcatel 8118 VoIP Phones with high Latency

Question:

 

Do other voice devices have such high latency on the same access point?  If not, please open a case with Alcatel to make sure you have the WLAN portion optimized.  If other devices do NOT have a latency issue, we have to troubleshoot interference, etc.



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor II
Posts: 15
Registered: ‎05-05-2011

Re: Alcatel 8118 VoIP Phones with high Latency

All devices was affected with this problem. After enabling 802.11k ALL devices did have pings under 100ms :-)

 

One checkbox for all clients :-)

Guru Elite
Posts: 20,821
Registered: ‎03-29-2007

Re: Alcatel 8118 VoIP Phones with high Latency

What kind of encryption are you using on the AP and what are the devices are you using?

 



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor II
Posts: 15
Registered: ‎05-05-2011

Re: Alcatel 8118 VoIP Phones with high Latency

WPA2 PSK AES for the Voice-SSID and the Data-SSID

Open for Guest-SSID

Guru Elite
Posts: 20,821
Registered: ‎03-29-2007

Re: Alcatel 8118 VoIP Phones with high Latency

You might want to open a case with Aruba about that to get to the bottom of this.  Very interesting..



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor II
Posts: 16
Registered: ‎05-03-2010

Re: Alcatel 8118 VoIP Phones with high Latency

You might have alerady solved this issue - but we discovered the similar issue with AOS 6.2.1.1 and 6.3.0.1 and Alcatel IP Phones.

The phones would NOT connect unless 802.11k was enabled, and after we enabled that reponse where terrible, and unable to place.

eliminated until we discovered that QuietIE advertising might have been the caveat here. Disabled that and response was rapid fast, enabled that and delay was immediate

 

to disable

wlan  rrm-ie-profile <prfofile-name>

no quiet-ie

 

to enable

wlan  rrm-ie-profile <prfofile-name>

no quiet-ie

 

And remember to add the rrm profile to the 802.11k profile connected to VAP for the wireless

show wlan virtual-ap

show wlan dot11k-profile (as mentioned in output above)

 

Search Airheads
Showing results for 
Search instead for 
Did you mean: