Security & Compliance Ref: GSMA FS.20 / ITU-T Rec. X.1244

Local Bypass SMS Termination

Local Interconnect Bypass & Grey-Route SMS Termination

Direct Telecom Definition • Carrier Industry Standard

The non-compliant routing of A2P SMS traffic through unauthorized SIM boxes or P2P interconnects to evade domestic mobile network operator termination fees.

Key Takeaways & Executive Summary

  • Local bypass relies on unauthorized SIM boxes and P2P routes that violate national telecom directives.
  • Carrier SMS firewalls actively detect and drop bypass messages, generating fake DLRs and high latency (>45s).
  • AVM Networks routes all traffic exclusively via operator-compliant direct white routes with sub-3.5s delivery SLAs.

Technical Definition & Carrier Engineering Standards

Local Bypass SMS Termination (also referred to as SIM box fraud or grey routing) involves routing commercial Application-to-Person messaging through unauthorized consumer channels or international transit loopholes to avoid paying legitimate mobile network operator (MNO) interconnect termination charges. Because local bypass routes lack bilateral agreements, they suffer from high message failure rates, fake DLRs, and severe latency. AVM Networks strictly adheres to 100% compliant, direct-operator white-route termination.

Frequently Asked Questions

What is Local Bypass SMS Termination?

It is the unauthorized transmission of commercial A2P SMS over consumer SIM boxes or non-compliant interconnects to evade official carrier termination tariffs.

Why do enterprises avoid bypass SMS routes?

Bypass routes produce fake delivery receipts, high message loss, severe latency for 2FA OTP tokens, and legal liabilities under anti-spam regulations.

Related Telecommunications Terminology

SMS & SMPP

SMPP

An industry-standard open protocol used by telecom carriers for exchanging SMS messages between SMSCs and ESMEs.

SMS & SMPP

DLR

An asynchronous network status notification confirming whether an SMS was delivered, buffered, or rejected by the handset.

Routing & Softswitch

MNP

The carrier telecommunications capability allowing mobile subscribers to retain their MSISDN phone number when switching from one network operator to another.