Parlay X is a set of open telecom web-service standards defined by the Parlay Group.

The Parlay Group is a multi-vendor consortium formed to develop open, technology independent APIs that enable the development of applications operating across multiple, networking-platform environments.

Parlay integrates intelligent network (IN) services with IT applications via a secure interface that allows billing of services. By not requiring detailed knowledge of underlying code, networks and environments, Parlay open APIs enable developers to be innovative and to focus on the business logic. Parlay-based portable, network-independent applications are connecting the IT and telecom worlds, generating new revenue streams for network operators, application service providers (ASPs), and independent software vendors (ISVs).

To date, the Parlay Group has released the following Parlay X web-services specifications:

Third-party call
Call notification
Short messaging
Multimedia messaging
Payment
Account management
Terminal status
Terminal location
Call candling
Audio call
Multimedia conference
Address list management
Presence

These are all free and can be downloaded from the Parlay Group website.

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