Spam calls

[master001]

Hi everyone,

There are lots of spam calls from everywhere...   toll-free number, local land line etc. 

Beside blocking them,  any other way we could deal with these kinds of calls?

Your advice is highly appreciated.

Master001

[will.alvord]

Sure... Besides answering them or blocking them, what would you like to do with those calls? You'll also want to specify what you're using for call control (cm or cme), protocol (h.323, sip, mgcp), and version.

[master001]

Thanks all.    Yes, either answering or blocking those spam call...  I tried to think of other call treatment, such as forward those spam calls to specific ext. ( such as security ).    Looks CUCM9+  has new feature to block anonymous call .   will dig into it.  

Thanks Jefferson for the post.  It really helps with steps on how to deploy call blocking.

Master001

[Dennis Mink]

The only way to fully get rid of unsollicited/unwanted calls is to remove all your connections to the PSTN, sure you can reject certain calls only if you know the callerID, or you can put your number(s) on some sort of "please do not call me for sales talks" list. but the reality is. It will not permanently stop unwanted calls.

[Mohammed al Baqari]

Hi,

Is this CUCM or CME deployment?

How are you connected to the Telco?

[Jefferson Islan Silva]

Please let us know if your PSTN circuits are connected on a H.323 GW or a MGCP. incoming calls can be blocked based on either Automatic Number Identifier (ANI) or Dialed Number Identification Service (DNIS) information, or both, through translation rules on the gateway (GW) configuration. A example about that:

Call Blocking Specific Calling Numbers

Configure a voice translation rule to block the desired calling number you want to block. This example uses 9193927393.

voice translation-rule 1
 rule 1 reject /9193927393/      

!--- Matches the defined number string and rejects the call.

!

!--- Apply the rule to a translation profile for the calling number. 
!--- You could also reject based on called or redirect-called numbers.

!
voice translation-profile call_block
 translate calling 1      

!--- Invokes voice translation rule 1 in order to determine 
!--- which calls to reject based on the calling number.

!

!--- Include the translation profile within a dial peer definition.

!
dial-peer voice 100 pots
 call-block translation-profile incoming call_block      

!--- Invokes the voice translation profile “call_block” on 
!--- inbound POTS calls that match this peer 
!--- in order to determine which calls to reject.

 call-block disconnect-cause incoming call-reject
 incoming called-number       

!--- Matches this peer for all inbound POTS calls.

 port 1/1:23

If it's a MGCP circuit, you may block it via CUCM:

https://supportforums.cisco.com/document/71966/blocking-calls-based-calling-party-id

Let me know if you have any more questions.

If the problem was resolved and my answer helped you, mark as answered.

Thank you

[ROBERT TAKAC]

Hey Jefferson,

Thank you for the great example.

I have a lot of enemies I guess, and need to block about 230 numbers in CME 8.6.  It looks like all translation profile lists have a maximum of 100 entries.

Is there away around this that will allow me to include all 230 numbers?

Thanks very much for your time.

bob