I have a small office with one VLAN. There are 15 IP phones and 15 PC's that plug into a Cisco 3560G switch. The phones and PC's are on the same VLAN. The phones are provided via a hosted VOIP provider. Lately we have been experience voice quality issues. The hosted VOIP provider have asked us to prioritize the voice traffic so it has priority over all other traffic out to the WAN. My network is very simple and looks as follows:
Cable Modem----------Cisco 2911 Router-----------Cisco 3560G switch (phones and PC's plug into this switch.)
Could someone please send me a sample config on how to accomplish this? Thank You!