Acceptable Use Policy (AUP)

Effective Date: November 12, 2026  |  Entity: Synda Tech Ltd

1. Purpose and Scope

This Acceptable Use Policy ("AUP") governs the use of all voice, SIP trunking, hosted PBX, unified communications, messaging, and telecommunications services ("Services") provided by Synda Tech Ltd ("Synda Tech," "Company," "we," "us," or "our"). By accessing or using our Services, the Customer ("you" or "Customer") agrees to comply with this AUP and all applicable local, national, and international telecommunications laws and regulations, including U.S. Federal Communications Commission (FCC) rules, the Telephone Consumer Protection Act (TCPA), the Truth in Caller ID Act, and the Telemarketing Sales Rule (TSR).

2. Prohibited Activities

Customer shall not use, nor permit any end user or third party to use, the Services for any unlawful, abusive, fraudulent, or disruptive purpose, including but not limited to:

• Illegal Robocalls & Unsolicited Calling: Originating or transmitting automated, prerecorded, artificial voice, or AI-generated calls without the prior express written consent of the called party, or in violation of the TCPA, TSR, or National/State Do Not Call (DNC) registries.
• Caller ID Spoofing & Manipulation: Transmitting inaccurate, misleading, falsified, or unauthorized Caller ID information (From, P-Asserted-Identity, Remote-Party-ID, or Diversion headers) with the intent to defraud, cause harm, or wrongfully obtain anything of value, or passing any telephone number that the Customer does not own or have explicit written authorization to use.
• High-Risk & Short-Duration Traffic: Engaging in traffic pumping, access stimulation, war dialing, SIP scanning, denial-of-service (DoS) attacks, or generating excessive short-duration calls or high abandonment rates that degrade network integrity.
• Fraud & Phishing: Engaging in vishing (voice phishing), toll fraud, wangiri (one-ring scams), or impersonating government agencies, financial institutions, or emergency services.
• Harassment & Unlawful Content: Transmitting threatening, abusive, defamatory, obscene, or harassing communications.

3. Caller ID Verification & STIR/SHAKEN Compliance

Customer agrees to originate calls only using valid, active telephone numbers assigned to Customer by Synda Tech Ltd or verified external numbers for which Customer has provided proof of ownership or authorization. Synda Tech Ltd reserves the right to block, strip, or downgrade STIR/SHAKEN attestation on any call containing unverified or malformed Caller ID headers.

4. Know Your Customer (KYC) & Traffic Monitoring

Customer must maintain accurate business registration and contact details with Synda Tech Ltd. If Customer resells or provides Services to downstream end users, Customer is responsible for vetting those end users and enforcing terms no less restrictive than this AUP. Synda Tech Ltd actively monitors network traffic patterns for compliance and fraud prevention.

5. Cooperation with Traceback Requests

Synda Tech Ltd participates fully in industry anti-robocall initiatives, including inquiries from the Industry Traceback Group (ITG), regulatory authorities, and upstream carrier partners. Upon receiving a traceback or compliance inquiry involving Customer's traffic, Customer agrees to respond and provide originating customer/source records within 24 hours (or sooner if required by law).

6. Enforcement and Remedies

Violation of this AUP constitutes a material breach of service. Synda Tech Ltd reserves the right, immediately and without prior notice, to:

1. Block specific calling numbers, SIP trunks, or destination routes;
2. Suspend or permanently terminate Customer's Services;
3. Report unlawful activity and share relevant call detail records (CDRs) with upstream carriers, the Industry Traceback Group, and law enforcement or regulatory agencies.

7. Reporting Abuse

To report suspected abuse, Caller ID spoofing, or violations of this AUP, please contact our compliance team immediately:

Compliance & Abuse Desk – Synda Tech Ltd
Email: abuse@syndatech.com
Website: https://syndatech.com