Emergency Nurse Practitioner (ENP) Practice Test

Cell tower and sector information is used to identify the geographical location of a caller. In wireless Phase I, this information is communicated to the emergency call center through a protocol called PANI. ESRK is not used to identify the cell tower and sector, but rather it is used for identifying the caller's location within the cell tower sector. ISUP and SIP are also not used for identifying the cell tower and sector, as they are signaling protocols that are used for call setup and handling. Therefore, B is the correct answer as PANI is specifically designed to provide accurate cell tower and sector information during emergency calls.