Usage steps
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Open Call rules and read the tenant-scope notice.
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To add a block, enter the phone number, choose the block type shown in the selector and enter the required Reason. Add a DID tag only if needed.
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Review the entry and select Add. Confirm it appears in the blocked-number table.
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Review Answering machine detection to understand how outbound voicemail detection is configured. Controls may be managed by your organisation.
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Use the read-only SIP headers section when coordinating integration troubleshooting with your telephony administrator.

Expected result. You can identify the applicable calling rules and maintain authorised block entries.
Practical notes and troubleshooting. A Do Not Call analysis outcome and a number in the telephony blocklist are different records. Verify the applicable suppression workflow rather than assuming one automatically updates the other.