PSTN Gateways

A PSTN gateway is a pointer to an SBC that also stores the configuration that is applied when a call is placed through the SBC, such as forward P-Asserted-Identity (PAI) or Preferred Codecs. It can be added to voice routes. For the hosting model (Microsoft Super Trunk), only the carriers need to set up and manage a single trunk (carrier trunk in the carrier domain). For the customer tenant, the carrier needs to only add the derived trunk FQDN to the voice routing policies of the users. There is no need to create a new PSTN gateway for a customer trunk.