Number Blocker by HQTelecom.com - Version 6[Product Information]- Enter your model numberto make sure this fits.
- High Volume Blocking Capacity: Block up to 1，000 unwanted phone numbers
- Block calls showing as “OUT OF AREA” (--- O ---)， “PRIVATE” (--- P ---) or with no phone number displayed
- Block up to 5 area codes or prefixes (1-5 digits) - No initial setup required (just plug and start blocking)
- One-Button Operation - Simply press “BLOCK” button to block unwanted numbers
- Compatible with standard (PSTN) single lines & VoIP services
