reply to TomS_
Re: Cisco IP phone vulnerability Agreed, being a Cisco voice engineer the key is in the QoS design. QoS seems to be greatly over looked, or the hope of "Auto-QoS" will fix all seems to be alive and well.
Know your QoS, know your LAN / WAN and VoIP is easy peasy regardless of product.
+1 to the QOS mandate for voice quality.
There is great deal of knowledge lacking across the industry regarding the inner workings of priority queueing, the differences between strict priority and congestion aware LLQ, the need for congestion AVOIDANCE as well as congestion management technology and the insistance that any drop is bad regardless of what kind of packet got dropped.
Auto-qos could be replaced by "match dscp ef; priority percent 90" and let er rip. It would be more beneficial in many environments lol