(usr-tc) Block collect calls

Is there any way to block collect calls in the TC, in HARC or in DSPs? The telco told me that they can't block from their side. - Marcelo - 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.