WebSphere brand IBM WebSphere Telecom Web Services Server, Version 7.1

Planning to install Parlay X Call Notification over SIP/IMS

Here is a summary of the TWSS components, database tables, and other network elements that are required when you deploy Parlay X Call Notification over SIP/IMS.

This topic provides information about what is needed in the network in order to deploy the Web service. The order in which the information is presented does not represent the order in which the elements should be installed.

Your network must include the following elements:

Access Gateway

The Access Gateway must be installed in the network and is typically in a different cluster than the Web service implementation. All incoming calls are routed through message processing flows, which are deployed on the Access Gateway. A default Call Notification message processing flow is provided and should be deployed, unless you are using a custom message processing flow.

Service Policy Manager

The Service Policy Manager must be installed in the network, either in the Service Platform cluster or in its own cluster. The Service Policy Manager manages policies associated with the Web service implementation. When the database tables are created, they are populated with default policies. For information about default policies, see the Reference section of this information center.

TWSS Administration Console

The console must be installed on the deployment manager node for the cluster where the Web service is deployed.The console is used to configure the Web service implementations and the Service Platform components and to specify how they should be invoked. It is also used to administer MBeans that are included in the EAR files for the Web service implementations. It is managed through JMX.

The console plug-in acts as an extension to the WebSphere Integrated Solutions Console.

Service Platform components

The Service Platform components must be installed on the same cluster node as the Web service implementation. If the cluster is configured to synchronize, you can deploy the Service Platform components on the network deployment manager node. Some Service Platform components may be optional and, if so, are noted as optional in the following list. Interactions with other Service Platform components are also noted.

Table 1. Service Platform components for Parlay X Call Notification over SIP/IMS
Service Platform component Required? Remarks
Admission Control No When the Admission Control component Web service is available, the Web service implementation issues a VerifyAdmittableRequest to the Admission Control component to determine if the service request can be processed.
Traffic Shaping No Recommended in an integrated environment–that is, in a full setup where all of the TWSS components (Access Gateway, Service Policy Manager, and so forth) coexist.
Network Resources No Recommended in an integrated environment.
Notification Management Yes The startCallNotification operation issues a RegisterNotification request. The stopCallNotification and terminateNotification operations issue a RemoveNotification request.
PX Notification Yes The Web service implementation sends notification messages asynchronously to applications through this component. A retry mechanism has been added to the notification delivery of Parlay X services.
Address Masking No Unlike the other Service Platform components, this Web service is utilized only by the Address Masking mediation primitive of the Access Gateway. It is used to mask the subscriber address in a message before the message is sent to a third-party application. In addition, messages from third-party applications are processed so that any masked addresses they contain are unmasked before the messages are sent downstream.
Fault and Alarm No Recommended. When the Fault and Alarm component Web service is available, the Web service implementation issues a RecordFaultRequest request to the Fault and Alarm component to generate a fault or an alarm when the following conditions occur:
  • A Parlay X Call Notification over SIP/IMS fault condition is detected.
  • An Admission Control component Web service fault occurs.
  • A Usage Record component Web service fault occurs.
  • A PX Notification component Web service fault occurs
  • A Notification Management component Web service fault occurs.
Usage Record No Recommended. When the Usage Record component Web service is available, the Web service implementation uses it to record information about services rendered for status and billing purposes.

JMS queues

A JMS queue is required for the PX Notification component Web service, however there are also several other service implementations which use JMS queues.

When setting up the service integration buses, the First Steps script will configure a permanent file store or datastore. If you choose to configure the file store manually, the file store should be stored on a mounted NFS drive. Each instance of the Web service in the cluster should use the same permanent store directory path.
Note: When you use the First Steps script to automate your configuration, the service integration buses are defined for you. However, you will need to provide a file system directory on the NFS shared drive.

Database

Database tables must be created to store configuration and policy data. You can use a single database to store this data, or you can create a unique database for each type of data. When you use the First Steps script, the required tables are created for a single database configuration.

If you choose to use multiple unique databases, or if you prefer to configure the database tables manually, you can find additional information in the topic Planning for the database.

DB2® and Oracle databases are supported.

Other interactions

The Parlay X Call Notification over SIP/IMS Web service implementation interacts with network elements and other entities. The following interactions are important:
  • HTTP proxy: An HTTP proxy needs to be configured. WebSphere Application Server includes an HTTP proxy that can be used for this purpose.
  • SIP proxy: A SIP proxy must be created and configured for requests to the IMS control plane. WebSphere Application Server includes a SIP proxy server that can be used.
  • S-CSCF: Parlay X Call Notification over SIP/IMS uses the S-CSCF network element as a SIP proxy for outbound TEL and SIP URIs.



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