QOS - WiFi Telephony

[stauftm]

I hope everyone is having a happy holiday season!

Wondering if any of you have any experience with wireless telephony and in specific the QOS side of it? I have worked with hardwired IP sets and QOS and have had great luck with ADAC, so I'm wondering what people have been doing with wireless IP phones?

We have all Avaya data and use Cisco for wireless. If anyone has any comments about this it would be much appreciated!

Thanks,
Todd

[Jon Hurtt]

In the past this was handled by a proprietary protocols (Spectralink Voice Protocol - SVP)

Today we have 802.11e also known as WMM. That is where i begin your search with the Cisco Wireless...

That should cover you from the Wireless Client perspective  just remember to properly configure your LAN QoS to ensure once your traffic leaves your WLAN System the QoS is still preserved.

[Michael McNamara]

Hi Todd,

You'll want to test and design your wireless voice very carefully.

We currently utilizing the 802.11 b (2.4Ghz) band in my facilities (Motorola RFS7000 - AP300s) along with the Avaya 2245 Wireless Gateway (provides the SVP conversion - not needed if you go with WMM on the 6100 series handsets). We use WPA2-PSK for encryption which seems to work well. The quality is indistinguishable from a land line, we are utilizing G.711 (best quality) on the CS1000 and Media Gateways.

I have about 700 6140s at spread across four different sites, max at any one site is 250.

I have not yet tested the WMM option myself although I will be in the very near future since we have yet another new facility coming online that will require ~ 100 wireless handsets.