IIRC a single ulaw or alaw voice call uses about 0.08 Mbps including the overhead. I think you'll have room on your 10Mmps network -----Original Message----- From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org] On Behalf Of Carlos Alvarez Sent: Friday, January 04, 2013 1:37 PM To: voiceops at voiceops.org Subject: [VoiceOps] VoIP on 10mb Cat 3 switched network Has anyone had experience successfully running VoIP over 10mb Cat 3 cabling? A new customer has asked, because that's what they have in place. I'm not interested in an unreliable solution just to save a few bucks, but in theory it should work reliably to have a dedicated 10mb to each phone and then gigabit out of the main switches. -- Carlos Alvarez TelEvolve 602-889-3003