Computer Telephony Integration (Cti); Application Programming Interfaces (Apis) - Avaya Application Solutions Deployment Manual

Call processing
CMS reliability and redundancy
Dual Links to CMS provides an additional TCP/IP link to a separate CMS for full, duplicated
CMS data collection functionality and high availability CMS configuration. The same data are
sent to both servers, and the administration can be done from either server. The ACD data is
delivered over different network routes to prevent any data loss from such conditions as ACD
link failures, CMS hardware or software failures, CMS maintenance, or CMS upgrades.

Computer Telephony Integration (CTI)

Computer Telephony Integration (CTI) enables Communication Manager to be controlled by
external applications, and allows integration of customer databases of information with call
control features. CTI is a LAN-based solution that consists of server software that runs in a
client/server configuration.
CTI opens up Application Programmer Interfaces like ASAI, Telephony Services Application
Programming Interface (TSAPI), and Java Telephony Application Programming Interface
(JTAPI), which can be used to control the server from an external application.

Application Programming Interfaces (APIs)

Communication Manager supports the following APIs to interface with other applications:
Adjunct Switch Application Interface (ASAI) allows adjunct applications to access a
collection of Communication Manager features and services. Integration with adjuncts
occurs through APIs. ASAI is part of Avaya Computer Telephony.
DEFINITY Application Programming Interface (DAPI) for accessing control and data paths
within Communication Manager.
Java Telephony Application Programming Interface (JTAPI) is an open API supported by
Avaya Computer Telephony that enables integration to Communication Manager ASAI.
Telephony Application Programming Interface (TAPI).
Telephony Services Application Programming Interface (TSAPI) is an open API supported
by Avaya Computer Telephony that allows integration to Communication Manager ASAI.
104 Avaya Application Solutions IP Telephony Deployment Guide