How do I deal with a phone spammer? Can it be blocked?


  • We are getting spammed by a phone number (caller ID) repeatedly.  
  • Can we block or blacklist a phone number?



Step 1: Adding a blacklist rule

  1. Write down the caller ID or Caller Name exactly as it is showing on the phone display.
  2. Login to PISTON as the admin login.
  3. Under 'Hosted PBX' (or VoIP Services), go to 'Advanced' then click Blacklists.
  5. In the 'Name' field, enter a text description.
  6. Click Add Number.
  7. Enter in the caller ID or Caller Name that you noted in step 1.  
    • It has to match 100%. 
    • Example, if you saw 604-555-6666 on your phone display then you need to enter exactly that including the dashes but without the parenthesis.  
  8. Repeat from 6. if you have more numbers to add.
  9. Click Save.

Step 2: Enabling the blacklist rule

  1. In Piston, under 'Hosted PBX', click Account Details.
  2. Click the Advanced tab then Options.
  3. Under 'List of active blacklist', click Add a blacklist to this account.
  4. Select the blacklist you just created.
  5. Click Add.
  6. Click Save.
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