SHARE



ABOUT THE AUTHOR


Matt Brunk
Matt Brunk has worked in past roles as director of IT for a multisite health care firm; president of Telecomworx,...
Read Full Bio >>
SHARE



Matt Brunk | November 07, 2012 |

 
   

VoWiFi: Are You Ready?

VoWiFi: Are You Ready? We want clients that run on smartphones and integrate to the telephony solution and can run over our WLAN.

We want clients that run on smartphones and integrate to the telephony solution and can run over our WLAN.

In my prior post, Campus 802.11n Kickballs and Basketballs, I mentioned we were having some late night fun on a site after deploying 802.11n for a K-8 school.

The Adtran Netvanta 160s that we installed support WMM/802.11e and Quality of Service (QoS)
 for Enterprise-class
Voice over Wi-Fi. We used the opportunity to evaluate voice services on our iPhones. What we used to test: Talkatone and a Google Voice account and Voxer's WalkieTalkie, a push-to-talk iPhone app.

Our expectation was that our calls would drop, but they didn't. Instead, when our test calls were handed off from one AP to the next, the very end of the word spoken would sound "heavy" (Can you hear me now?) or it would get clipped (Can you hear me--?). The noticeable voice impairment was latency. We believe we experienced about a half of a second delay on the test calls. Audio was good.

Now, while the Adtran NV160s are not fully compliant, according to Adtran they are working towards compliance with the WiFi Alliance products.

According to the WiFi Alliance certification programs for enterprise-grade voice and mobility services:

"Wi-Fi CERTIFIED Voice-Enterprise is designed to support good voice call quality in large enterprise networks that require support for advanced WPA2 Enterprise security mechanisms. The program builds on the existing Wi-Fi CERTIFIED Voice-Personal program to support fast transitions between access points (APs) and provide management for voice applications.

"Wi-Fi CERTIFIED WMM-Admission Control provides bandwidth management tools to optimize the delivery of voice and video traffic in Wi-Fi networks."

These standards--802.11k, 802.11r and 802.11v--are key elements for Enterprise Voice:

* 802.11r enables continuous connectivity by enabling fast, secure, seamless handoffs between APs.
* 802.11k improves AP discovery to stop clients from roaming to over-utilized APs with strong signal. Alternatively, APs will detect when clients move away and help make better choices.
* 802.11v provides clients with topology information, increasing network awareness to improve overall WLAN performance.

The feedback I've given to manufacturers is:

* We want clients that run on smartphones and integrate to the telephony solution
* These clients need to run over our LAN WiFi (VoWiFi) because customers want to pare down PBX hardware ownership (number of devices)
* Customers want to continue to pair their desk phones to their cellphones
* We need to maintain one infrastructure, not two (i.e., WiFi and DECT)

There's also the awareness in the BYOD crowd that they have expectations, and some of them are, as we've witnessed in the past, that voice can be almost as good as we're used to, and still be acceptable. The social media tools seem to dictate a sliding scale that vacillates between desires and need; I have a desire to communicate with you but maybe a need to communicate with you via voice, immediately. That sliding scale of use is going to make future WiFi deployments interesting and challenging.





COMMENTS



Enterprise Connect Orlando 2017
March 27-30 | Orlando, FL
Connect with the Entire Enterprise Communications & Collaboration Ecosystem


Stay Up-to-Date: Hear industry visionaries in Keynotes and General Sessions delivering the latest insight on UC, mobility, collaboration and cloud

Grow Your Network: Connect with the largest gathering of enterprise IT and business leaders and influencers

Learn From Industry Leaders: Attend a full range of Conference Sessions, Free Programs and Special Events

Evaluate All Your Options: Engage with 190+ of the leading equipment, software and service providers

Have Fun! Mingle with sponsors, exhibitors, attendees, guest speakers and industry players during evening receptions

Special Offer - Save $200 Off Advance Rates

Register now with code NOJITTEREB to save $200 Off Advance Rates or get a FREE Expo Pass!

February 22, 2017
Sick of video call technology that make participants look like they're in the witness protection program? Turns out youre not alone. Poor-quality video solutions can give users an unprofessional
February 7, 2017
Securing voice communications used to be very simple since it was generally a closed system. However, with unified communications (UC) you no longer have the walled protection offered by a dedicated v
January 11, 2017
As cloud communications continues to grow and mature, many enterprises are looking to build a hybrid CPE-cloud strategy. Looking out over the next three years, how should enterprises expect the cloud
February 17, 2017
From the most basics of basics to the hidden gotchas, UC consultant Melissa Swartz helps demystify the complex world of SIP trunking.
February 7, 2017
UC&C consultant Kevin Kieller, a partner at enableUC, shares pointers for making the right architectural choices for your Skype for Business deployment.
February 1, 2017
Elka Popova, a Frost & Sullivan program director, shares a status report on the UCaaS market today and offers her perspective on what large enterprises need before committing to UC in the cloud.
January 26, 2017
Andrew Davis, co-founder of Wainhouse Research and chair of the Video track at Enterprise Connect 2017, sorts through the myriad cloud video service options and shares how to tell if your choice is en....
January 23, 2017
Sheila McGee-Smith, Contact Center/Customer Experience track chair for Enterprise Connect 2017, tells us what we need to know about the role cloud software is playing in contact centers today.