block traffic to a vlan

[softechvt]

Is it possible with a 3560 to block all traffic to a certain vlan except for one or two IP addresses?  Create an ACL or something?  We have a vlan for voice calls (SIP) and we are getting a lot of scnas that are making the phones ring and such, and I think we can stop this if we only allow traffic onto the vlan from the IP's the SIP traffic is SUPPOSED to be coming from.  If so, how do I go about doing this?

[Reza Sharifi]

You can do ALC to prevent one vlan to talk to another vlan, but what is the design look like?  If you have separate vlans for your Voice and data traffic, this should not be the case. There might be something wrong with your Voice system config I.E call manager, Unity, etc.. that is making the phones ring.