Cisco scores a perfect 10 for a critical comms flaw
The ES builds of Cisco Unified Communications Manager and its Session Management Edition have hardcoded credentials that an unauthenticated attacker can exploit to gain root control.
Do VoIP phones need ethernet? - London Business News | Londonlovesbusiness.com
"VoIP phones can work over WiFi, and in some cases, it's an excellent solution for small businesses and remote workers when wired connections are impractical."