I'd like some help configuring QoS for voice traffic over our Cisco ASA 5505.
This is our network topography:
(Interweb) <-- Cable Internet --> ASA5505 <--- LAN ---> Polycom VOIP Handset <--- Cable ---> PC
As shown above, our Internet is provided by cable Internet. Our ASA is connected to the LAN over a 10/100 switch. Each Polycom plugs into the switch, and each PC is then plugged into the network port on the back of the Polycom to reduce wiring.
For VOIP, we use a hosted PBX provider named Jive (www.getjive.com
). At our office we've found some occasional quality issues. Our Internet bandwidth is 10 Mb/s up and 2 Mb/s (which I verified via Speakeasy's bandwidth tester). I also ran some of the free online VOIP testing tools and the results were "good" quality, per the sites.
Some issues we currently face:
* What appears to be jitter -- voice quality can sometimes be rough
* Occasionally a call will have an echo, at least for me
* 1/100 calls may drop
The first step I'd like to do is to enable QoS on our end. I'll then push the troubleshooting upstream after that. We can't have the ISP enable QoS. We can only enable QoS on our end, but at least that's a start.
I'd like to support up to three calls, which would be 300 Kb/s or so.
Our outside interface is Ethernet 0/0.
Our inside interface is Ethernet 0/1.
Our internal network is 192.168.222.0/24.
We have no QoS configured whatsoever.
I did read the Cisco document on QoS, but I'd really like to have some hand-holding in this specific case.