Jabber Client - Audio and Video Quality

[Revocatus Kishiwa]

To one of my customer I have installed  CUCM, CUCM IM&P, CUC both version 11, WLC 2504 for mobile connectivity. Everything is working fine on IP desk phones. The challenge came on Jabber client on mobile phones audio and video is very poor, and bad enough those using jabber client doesn't have desk phones.

 Attached is my network diagram.

I am looking for the solution and if there is anyone experienced same thing and come-out of this situation kindly help.

[Rasika Nayanajith]

What type of end devices you are using in your environment. For voice/video, you need to have good end devices to support faster roaming/support proper QoS in order handling sensitive application like voice.

Here is best practices for voice over wireless with Cisco 7925G. Your RF design should be done properly to support these applications.

http://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/cuipph/7925g/7_0/english/deployment/guide/7925dply.pdf

If you have apple devices, refer below guide

http://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-2/b_Enterprise_Best_Practices_for_Apple_Devices_on_Cisco_Wireless_LAN.pdf

Have you deployed end to end QoS on your wireless network ? It is the most critical aspect of such a design. Refer below post for basic understanding how QoS work in wireless environment.

https://mrncciew.com/2012/11/28/understanding-wireless-qos-part-1/

https://mrncciew.com/2012/11/30/understanding-wireless-qos-part-2/

https://mrncciew.com/2012/12/02/understanding-wireless-qos-part-3/

https://mrncciew.com/2012/12/16/understanding-wireless-qos-part-4/

https://mrncciew.com/2012/12/17/understanding-wireless-qos-part-5/

HTH

Rasika

*** Pls rate all useful responses ***

[George Stefanick]

  Is this for iOS devices specifically. If so read the release notes it mentions that for mission critical environments jabber is not recommended.  It's issues coming in and out of Wi-Fi device is going to sleep etc

[Revocatus Kishiwa]

Thanks George, here down we are facing a lot of problem once the sales guy committed something which is not possible to the customer, and for this scenario the seniors are the one were promised to use jabber clients and hence didn't order desk phone!!!!

Imagine among ten seniors only one has iPhone, the rest  got Samsung A5,A8.

[Revocatus Kishiwa]

Thanks Rasika for your prompt reply, understand I am a good follower of mrncciew.com and those QOS posts is among the great posts I have gone through are very knowledgeable. A customer has Samsung galaxy A5, A8 and one iPhone6. I also gone through below link not sure if this model will give better performance; may be iphone 6-Jabber_for_iOS-11.6.1.236312 can work.

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/11_6/cjab_b_planning-guide-cisco-jabber-116/cjab_b_planning-guide-cisco-jabber-116_chapter_010.html

[Rasika Nayanajith]

Yes, that document is useful. Even in that you can see lot of restrictions.

Fast roaming is key in this sort of wireless deployment, I would first make sure those clients can roam seamlessly without taking much time. Then see how Jabber behave in that network.

I also think you need to inform customer what they can achieve as of today (irrespective of what promised by sales).Since end user will keep changing their mobile device, supporting all different type of devices for Jabber is going to be problematic.

With Apple/Cisco partnership, I think iOS devices are the one you should consider in this sort of environment when deploying Jabber (not sure you have any control over this though).

HTH

Rasika

[vaguirre17]

Hello Rasika. I have choppy audio with 4 clients using jabber for win 10. I reviewed the best practices for vowlan and after implementing QoS the issue persists.

Any suggestions?

[Rasika Nayanajith]

Hi,

I would take some packet captures (both wired & over air) & ensure voice packets get marked up & prioritize correctly.

HTH

Rasika