Cisco Cisco Computer Telephony Integration Option 9.0 Technical References

The server service optionally allows multiple server applications to supply the same service. The 
ServerMode registration parameter determines how a server is selected to handle a given request. All 
server applications that wish to provide the same service must use the same ServerMode:

Exclusive. The first server application to register the service is the only one to serve requests. All 
other requests to register a server application for that service are refused with an 
E_CTI_NO_SERVER_FOR_REQUEST.

Round-Robin. Multiple server applications may register the service. The server application that has 
been waiting the longest for a request of this service type is chosen to service the request.

Parallel. Multiple server applications may register the service. Every request is sent to all registered 
servers concurrently. Every server response is forwarded back to the requesting client.

Initially, the only service that server applications may provide is call recording by registering the 
“Cisco:CallRecording” service using a REGISTER_SERVICE_REQ message, defined in 

:

The REGISTER_SERVICE_CONF message (

) confirms successful completion of the 

request:

MessageHeader

Standard message header. MessageType = 143.

MHDR

8

InvokeID

An ID for this request message that will be returned in the 
corresponding confirm message.

UINT

4

ServerMode

The CTI Server method is for selecting among multiple 
server applications that register to provide this service. All 
servers must specify the same ServerMode, one of the 
following values:

     0: Exclusive; 

     1: Round-Robin;     

     2: Parallel.

USHORT

2

ServiceName

The name of the service that the application wishes to 
provide.

STRING

64

Maximum message size (including header)

80

MessageHeader

Standard message header. MessageType = 144.

MHDR

8