36 DBS 576 (USA), Revised 6/11/98 576-13-700
Chapter 3. System Features Section 700 - Operation
Related Programming
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Considerations
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CO Trunk Inter face - Loop Start

The VB-44510 Loop Start interface unit supplies 8 loop start analog trunks circuits. In addition, the
VB-44511 Loop Start/Ground Start interface unit may alternatively be used to connect to loop start
trunks.
Hardware Requirements
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Related Programming
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Considerations
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Computer Telephony Integration Capability
Description
Computer Telephony Integration (CTI) provides communication and coordination of opera tion
between computers and the telephone system. A System Telephony Application Programming
Interface (TAPI) module is available to connect extensions to Microsoft windows-based applications.
The TAPI desktop module enables the capabilities of first party call control. Wi th this module there is
a physical connection between your telephone line and PC. Service Provider Interface (SPI) softwar e
must be installed on the PC to enable the capabilities of TAPI on the System for each specially
enabled telephone. Typical desktop applications include Contact Managers, Personal Organizers, and
Personal Answering Machines.
Hardware Requirements
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Related Programming
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Considerations
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