Call Blacklisting - and the SIT tone?

Here is the deal. I just installed PBX in a flash. I have my inbound/outbound working fine, and I have downloaded all the addon modules and updated all of the modules. I have run yum update, and the system is up-to-date.

My question, how do I set up my blacklisted numbers to forward to a SIT tone?

My setup:

One extension. both inbound/outbound use that extension.

Would I need to setup a second extension that is setup strictly to send inbound calls to a SIT tone, and configure blacklisted numbers to go to that second extension?

This is the code in extensions_additional.conf that checks for a blacklisted number:

include => app-blacklist-check-custom
exten => s,1,LookupBlacklist()
exten => s,n,GotoIf($["${LOOKUPBLSTATUS}"="FOUND"]?blacklisted)
exten => s,n,Return()
exten => s,n(blacklisted),Answer
exten => s,n,Wait(1)
exten => s,n,Zapateller()
exten => s,n,Playback(ss-noservice)
exten => s,n,Hangup

As you can see, if a match is found in the blacklist, it hits “Zapateller” first. Zapateller is an application that “allows you to generate a special information tone(SIT), which is used to block telemarketers.” It then plays the ss-noservice recording and hangs up. So I think it already does what you want.