Cisco Advanced Services offers a WebServices interface to CTIOS. The CTIOS Web Service provides a SOAP XML web method call interface to the CTIOS Server. It's use will require the customer or partner to develop an application that implements the CTIOS Web Service WSDL. This can be done with just about any programming language available which supports HTTP and SOAP XML constructs.
Information about the Advanced Services' CTIOS Web Service is available in the CTIOS Tech Center documentation