SPH_USTOAT is a standard SAP Table which is used to store SAPphone: Assign address data areas to user data in SAP systems, such as SAP R/3, S/4HANA, depending on the version and release level.
The SPH_USTOAT table consists of various fields, each holding specific information or linking keys about SAPphone: Assign address data areas to user data available in SAP. These include USERNAME (User Name), PRIO (SAPphone: Priority for table search), ATIC_ID (Address data area ID)... See below for full list along with technical details, documentation, text table, check tables, foreign key relationships, conversion routines, relevant tcodes and example ABAP select code etc. .