I know IPV6 affects only layer 3 switches, but I heard that it also could affect layer 2 switches with VLANs. Is this true? I have Cisco 3500 / 2900 layer 2 switches. Please advise. Thanks

When calling into from an external Phone line (Cell phone,etc) the DTMF works great, every time. From my office using a ROLM phone dialing out into the Gateway it picks up fine, but the DTMF tones are not recognized but sometimes it is. It is interm...