1. Configuration Guide
  2. STIR/SHAKEN Client
  3. HTTP Client Operating Modes
  4. Operating Under the ATIS Mode

Operating Under the ATIS Mode

By default, the The SBC operates its STIR/SHAKEN clients in ATIS mode. The behaviors described in the STIR/SHAKEN Client Operation section describe operation in ATIS mode.

When set to ATIS mode, the SBC sends and receives version ATIS-1000082 format SHAKEN PASSporT messages with STI-VS servers. In contrast with 3GPP mode, if the STIR server is configured in ATIS mode then the SBC does not generate DIV passports during authentication regardless of whether it detects a diversion in the call flow. In addition, the SBC only performs SHAKEN verification during ATIS verification. This is true even if the received INVITE has:

  • SHAKEN passport
  • SHAKEN and DIV passports
  • only DIV passport
  • other passports

Because the system is performing SHAKEN verification in these cases, it increments the "STI-VS received INVITEs with shaken PASSporT" counter for all of them.