Call Blocking Policy

1. Overview

Telsis LLC is committed to protecting consumers and the integrity of the public telephone network. This Call Blocking Policy outlines the circumstances under which Telsis may block, filter, or restrict voice traffic on our network, in accordance with FCC rules and applicable telecommunications law.

2. Why Calls May Be Blocked

Telsis may block calls under the following circumstances:

2.1 Fraudulent or Spoofed Calls

• Calls using invalid, unallocated, or spoofed caller ID numbers
• Calls that fail STIR/SHAKEN authentication without a valid attestation
• Calls identified as originating from known fraud sources

2.2 Illegal Robocalls

• Automated calls violating TCPA regulations
• Prerecorded message campaigns without required consent
• Calls identified via analytics as likely illegal robocall campaigns

2.3 Network Protection

• Traffic identified as part of a denial-of-service attack
• Abnormal traffic volumes that threaten network stability
• Traffic pumping or access stimulation schemes

2.4 Regulatory Compliance

• Calls blocked pursuant to FCC orders or directives
• Numbers listed on official government blocking lists
• Calls from carriers or originating sources under enforcement action

3. STIR/SHAKEN & Call Authentication

Telsis implements STIR/SHAKEN call authentication on our network as required by the FCC. Calls with a full attestation (A-level) will pass through normally. Calls with partial or gateway attestation may be subject to additional screening. Calls with no attestation from sources known for abuse may be blocked.

4. Customer-Requested Blocking

Customers may request blocking of specific numbers or traffic patterns on their accounts. To request blocking, contact us at sales@telsis.net with the relevant details. Telsis will make reasonable efforts to accommodate legitimate blocking requests.

5. Challenging a Block

If you believe your calls or numbers have been incorrectly blocked by Telsis, you may challenge the block by contacting us at:

• Email: sales@telsis.net
• Phone: +1 406 318 5014

Please provide the calling number(s), destination(s), approximate time of the blocked calls, and any relevant context. We will review and respond within a reasonable timeframe. If the block was made in error, we will work to restore service promptly.

6. No Blocking of Emergency Calls

Telsis does not block calls to 911 or other emergency services under any circumstances. Blocking of emergency calls is strictly prohibited under FCC regulations.

7. Transparency

In accordance with FCC transparency requirements, Telsis makes this Call Blocking Policy publicly available. We will notify affected customers when calls are blocked due to suspected fraud or AUP violations, where practicable.

8. Contact

Telsis LLC
145 Grand Ave, Billings, MT 59101
sales@telsis.net
+1 406 318 5014