(usr-tc) Is there a way to not accept anonymous calls?

Is there any way to configure a PRI (on the Netserver PRI, or the DSP), to not accept a call w/o caller-ID info? If it's just not available because of equipment, that's fine, but if the caller is specifically blocking the c-id, then I want to not accept the call on the rack... Is this doable? - To unsubscribe to usr-tc, send an email to "majordomo@xmission.com" with "unsubscribe usr-tc" in the body of the message. For information on digests or retrieving files and old messages send "help" to the same address. Do not use quotes in your message.