Introduction
■Inbound Call Management
■DEC Computer Integrated Telephony programming library
■Computer telephony integration
DEFINITY ECS uses an analog line circuit to support voice adjunct and interface functions such as:
■Loudspeaker paging
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■Queue status indications
■Recorded announcement
■External alarm inputs
DEFINITY ECS supports an auxiliary trunk interface that connects to equipment supporting features such as:
■Recorded announcement
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■Loudspeaker paging
DEFINITY ECS supports typical network interfaces such as:
■Electronic Tandem Network
■Distributed Communications System — over either X.25 links or ISDN temporary signaling connections
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Telephone Connections
All signals between analog telephones and the DEFINITY ECS are in analog form over a pair of wires. Digital DCP telephones using the Digital Communications Protocol employ digital transmission for integrated voice and data signals and control signals. Transmission is over a connection consisting of one or two pairs of wires. Each connection supports one signaling channel and two information (voice and data) channels.
The 8400 digital telephones automatically detect whether they are plugged into a
Like the digital DCP telephones, ISDN telephones transmit voice, data, and con- trol signals digitally. With the ISDN telephones, the transmission employs the