Paper Title:

**A Survey on Web Services in Telecommunications

Griffin, D.; Pesch, D
Communications Magazine, IEEE
Volume 45, Issue 7, July 2007**

Three Critical Questions

Group 1:

Member Name:Vallurupalli Anusha

1) Doesn't we require more hardware, new skills and significant effort to implement, configure, operate and manage an ESB?
2)What is walled garden approach that the author mentioned in the paper?
3)Does web service standards serve the best in distributed transaction environment when compared to CORBA which might be a better option ?

Member Name:Fazlun

1)The author mentioned various benefits of SOA but does SOA eliminated the problem of data redundancy in practical?
2)Unless SOA services are created for enterprise service bus, does it have any value despite of taking significant effort to implement it?
3)Does the implementation of web services as mentioned in the paper resolve balancing the load and fault tolerance issues in telecommunication projects?

Group 2:

Member Name: Anuradha Pathuri

1. Is there a need of killer application in the present scenario? How strongly do the telecommunication network companies feel the need of these killer applications? Is this new change necessary and acceptable by all the companies especially after incurring high costs by purchasing the 3G licenses?
2. There are very few network operators in the telecommunications domain when compared to the other technological domains like the information technology. Would this limit the number of web service providers for telecommunication applications?
3. How can the same web service be used for different telecommunication applications because the underlying network and the infrastructure and interconnections might change from network to network?
4. How is the security of the telecommunication applications achieved while using web services? Since the telecommunications networks are more sensitive than other applications in terms of security and network visibility.

Group 3:

Member Name: Sharat Chandra Dammadapu

1. Will there be any performance degradation when Web Services are directly implemented in telecommunications?
2. As Quality (QoS) plays an important role in any type of web services. How it will affect when integrated with the communications domain?
3. How will be the Error handling can be achieved while integrating SOA with telecommunications?

Group 4:

Member Name:Srikanth Voruganti

Critical questions:
1)SOA and EDA complement each other. But these two are required in a real time SOA
application. How are these two techniques matched and used or how these techniques
are matched so that the two opposite poles will work for a profitable cause?
2)How well is the middleware accessible to rapid application changes and developments?
if the middleware is vulnerable by the rapid changes how will the ESB matching the
middleware to current systems pace?
3)the current domain is a very well known domain for rapid changes. EDA approach will incur changes due to its active transitional states. how well are these dynamical transitions maintaines through a structure that is a combination of SOA and EDA?

Group 5:

Member Name: Sunil Kakaraparthi

1. EDA systems are based on the Event Condition Action rules. Does the given rules sufficient enough for the system or does it require any additional rules?
2. The author explains different technologies related to the implementation of the Web service in telecommunications system. Do these technologies can be applied to other systems?
3. The author considers two research studies to analyze the benefits of SOA. Does Forrester research or IBM research supports more?

Group 6:

Member Name:Bhargav Sandeep Ramayanam

1. The author has used the telecommunication model in which the web service composition is not supported. But now a days there is a lot of advantage for using service composition. Is it useful to use this model rather than to use the model which supports the service composition?

2. In the Service oriented architecture diagram the services are atomic and composite. The author had collaborated SOA with telecommunication model in which the service composition is not supported. Is it feasible to collaborate SOA with this model?

3. For analyzing the benefits of the SOA the author had considered Forrester research and IBM research. Among these researches which research will supports more?

Member Name: Debargh Acharya

1) How does the JAIN SLEE architecture provide a mechanism for service orchestration? The question needs a lot of insight as far as the technology goes and the article fails to provide an elaborate workflow of the discovery and composition processes.

2) The EDA architecture proposes a producer-consumer model for invocation of services. However, the functional relation between a producer and a consumer is not stated clearly. This is an important question to be considered because the contextual information of producer not only affects the service behavior but also the behavior of the consumers.

3) Events are not always independent and influence each other’s effects strongly. Hence, it is very important to understand the temporal relation between events for a correct analysis of concurrent event that may be fully or partly conflicting in nature thereby requiring dynamic scheduling to be done by the event manager. A detailed study of such complicacies would be a very important contribution in this domain.

Group 7:

Member Name: Rameshwaram Karunapriya

Critical Questions:

1.)The article proposes that better business practice helps in recognizing the shortcomings. To how far extent does the better performance of business helps in identifying the drawbacks and avoiding their consequences?

2.)Several technologies of Service Oriented Architecture (SOA) have been used in the network of telecommunications. To how far extent are these technologies reliable, and are these technologies being supported by all the platforms?

3.)To how far extent is the Application Programming Interface (API) dependable in transporting the message by protecting it from the unauthorized and illegitimate user?

Member Name:Shaiv

1.EDA systems simultaneously work with the Event coordination action rules . But what conditions are to be satisfied in order to perform the required actions when the several events trigger?

2.A third generation networks are used to accomplish the telephony services using high speed data access. But Does the SOA or Event Driven Architecture achieve the goal of 3G networks to its fullest?

3.What actions are to be taken when an event generated is failed to accomplish or when the reponse generated is interrupted by an external source?

Group 8:

Member Name:Harsha

• The paper states that the Event-Driven Architecture complements the approach taken in the Service Oriented Architecture. So what is the main difference between EDA and SOA Approach? Are the applications and services defined in both these architectures compatible with each other?
• The Web Service SIP node can be made to function as a WSIP node and also as a SIP endpoint so as to bind both the SIP and SOAP messages. How is it possible to configure this node so that it can work both as a WSIP node and a SIP endpoint?
• While using an Application Programming Interface for using application servers there always a possibility that the communications infrastructure to unauthorized threats and usage. How are we going to eliminate these threats?
• The mediation service in the application integration is made sure by the system’s capability to transform the content of any message into various payloads. How does this payload change can be made possible?

Group 9:


1. JSLEE environment is used for integrating multiple network resources and protocols and applications can use many different network resources with in the JSLEE environment. How is this integration of protocols and network resources done?
2. It is mentioned that the 'mediation service' used in 'enterprise service bus' is used for transformation from one protocol to the other and is used to transform any message into payloads. So when the data is transferred between the process, they is a chance of data manipulation. So how far is the security provided inorder to prevent the data from manipulation?

3. 'Enterprise service bus' is an extension of EAI which is an earlier form of middleware but the additional features of enterprise service bus isn't mentioned in the paper.

1. In this paper the author mentioned about transport services in the 'electronic service bus architecture' that it is used for routing messages to different destinations . But how far is the security provided within this service isn't mentioned.
2. 'Service level agreement'(SLA) is a formal contract between the service providers and the customers but on what metrics is this agreement done isn't mentioned in the paper.
3. It is mentioned that the existing web services are operated at syntactic level. As the ' WSDL standard ' doesn't support semantic represented how can "Semantic markup languages" like "OWL-S" and " WSMO" be implemented in web services?

Group 10:

Member Name:Manasa chennamaneni

1. Even SOA has an advantage like increasing flexibility and cost, enabling the new products. But the author didn’t mention about the asynchronous processing capabilities.
2. To minimize the risk we change large scale macro services to many more micro services using an approach which is different from waldgarden approach. But the author didn’t specify we he don’t prefer waldgarden approach.
3. As given SOA and EDA are used for implementing the realistic architecture where EDA is an advance of SOA architecture. But using the SOA architecture we minimize the risk, increase the flexibility and revenue. Even though why EDA has given much preference over SOA.

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