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ACD: Automatic Call Distributor--an automated method of assigning incoming calls to agents.
CTI: Computer Telephone Integration--the integration of legacy telephone equipment with ``modern'' computer systems.
DBS: Digital Business System--a digital hybrid key product line of PSCC (Panasonic Systems and Communications Company)
DSP: Digital Signal Processing--a computational method of processing digitized analog signals.
DTMF: Dual-Tone Multi-Frequency--Touch tones from a telephone keypad.
HIL, WIL: CTI protocols used by many Harris PBX systems
IVR: Interactive Voice Response--systems that prompt users for data and respond to input either via speech recognition or through DTMF input.
MML: ``Man Machine Language''--a programming interface for the Fujitsu F9600 PBX.
PBX: A private telephone switchboard. QNX: A real-time operating system produced by Quantum Systems, Inc.
SMDI: Simplified Message Detail Indication--A Bellcore standardized serial protocol for reporting where inbound calls are coming from and for setting message indicator lamps.
SMDR: System Management and Detail Recording or also "CDR", for call detail recording. Used typically on PBX equipment to output call records for inbound and outbound calls for billing purposes.
SPI: Service Provider Interface. A means for a vendor to supply a low level driver to support a higher level CTI protocol, such as TAPI or TSAPI.
TAPI, TSAPI: CTI Application Interfaces. TAPI is a Microsoft standard for Windows telephony applications. TSAPI is a semi-open standard promoted by various switch manufacturers. TSAPI has primarily been implemented by Novell, and is historically based on CSTA.
TCSI,CSTA: Low level communication protocols for CTI. TCSI is a Fujitsu F9600 protocol. CSTA is common on Siemens and AT&T (Lucent) switches and was intended as an open standard (see TSAPI).