User guide

UG_1x66B_046 73M1866B/73M1966B FXOAPI User Guide
Rev. 2.1 7
1.2 Conventions Used in this Guide
This document uses the following conventions:
• Software code, IOCTL names and data types are presented in Courier font.
• A table with a blue header is a summary table. A table with a gray header is a detail table.
1.3 Acronyms
API – Application Programming Interface
APOH – Another Phone Off Hook
BSP – Board Support Package
DAA – Data Access Arrangement
FXO – Foreign eXchange Office
GPIO – General Purpose Input/Output
IET – Interval Event Table
IOCTL – I/O Control
NOPOH – No Phone Off Hook
PCM – Pulse-code Modulation
POH – Phone Off Hook
SPI – Serial Peripheral Interface