Amen to that, brother! But, what sort of idiot client buys their phones from Cisco, a computer company (and a crappy one at that)? Kind of like buying fish from a butcher...
I recently had the misfortune of using brand-new Cisco SIP phones as an enduser on a daily basis: What crepitude! Dropped calls, 'one-ring' incoming calls, low and poor quality audio on voicemail, occasionally, the entire phone bank would either go completely dead or partially dead. This is the wave of the future?