Java VoIP / SIP implementation for phone number validation

We search for a expert to implement a VoIP SIP validation of a list of phone numbers.

As a result of the validation we need as much as possible details about the given number. The goal is to reduce the manual effort of a call center by knowing if the given phone number is a valid or invalid one. Also it would be nice to know what type of availability/unavailability was the result of the phone validation.

As a input you will get a CSV list. Your implementation shall be in Apache POI 3.14 and the column containing the phone number shall be configurable by a the column header name.

We do not need a database, since we have a custom implementation. BUT your model classes have to properly designed to be later able to use it easily with a custom persistence layer. To ensure you are not a simple poster please add the result of eight power two on top of your application.

As a result we expect to get a updated CSV file with the new columns which you need to provide for the end user to understand the status of the phone number validation.

Ensure that your implementation has a component for CSV reading, one for VoIP validation and one for CSV writing. Ensure the components are independently usable!

We prefer for VoIP / SIP Java Standards.

As a runtime environment we expect runable on:

- in JavaEE 7 (wildfly 10)

- Java 8

As the development environment we expect:

- Eclipse Neon

- maven

Your delivery artifacts:

- eclipse full project(s) incl. configurations and settings

- a fully working [login to view URL] to build the application as a single & runnable jar

- we share you a source repository for delivering the milestones

With your application provide us following details:

- delivery date for milestone 1

- brief class level design with public methods

- a list in word or excel of statuses collected for the later VoIP validation (see also [login to view URL])

- one or a set of configured eclipse projects in our source repository ([login to view URL](s) are already part of the delivery)

- delivery date for milestone 2

- working VoIP calls, no extraction of validation results

- delivery date for milestone 3

- working validation extraction and implemented CSV writing

Questions to you for the application process:

Are you fine with our application process?

- reviewing your CV and your application

- providing you a questionaire about your skills and experiences

- signing a NDA and customer protection

- personal interview

(please provide CV!)

What delivery dates do you have for the given milestones?

Assume you will start from 01.08.2016

What VoIP/SIP library do you plan to use?

To be clear a simple regEx validation like with shall be done in front of the VoIP checks, but they are not enough! RegEx does not check the real phone status.

Taidot: Java, VoIP

Tietoa asiakkaasta:
( 14 arvostelua ) Stuttgart, Germany

Projektin tunnus: #11095797

9 freelanceria on tarjonnut keskimäärin €232 tähän työhön


64 I have 10+ years of exp in java j2ee hibernate struts spring webservices databases. Done multiple projects like this and almost proficient in design patterns..Checkout my reviews, all projects were completed success Lisää

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Hi there! I have read what you exactly need, however I would like to ask you a few questions. I wouldn't call myself a master but I do work smart and do not rest until I get the job done. Please feel free to ping me an Lisää

€164 EUR 3 päivässä
(43 arvostelua)

Hello there. I am expert in java. I can do the work as per the requirement. Looking forward for your reply. Thanks.

€223 EUR 5 päivässä
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Hello, I have strongly experienced about Sip Phone & Chat App. Here is my past works: [login to view URL] [login to view URL] Lisää

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I am Senior Java Developer with more than 10 years of experience in Java design and development with strong problem solving skills. Code Samples [login to view URL] CV [login to view URL]

€282 EUR 5 päivässä
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Why do you want to use apache poi for csv reading? Is it related to Do not call validation or just about number validatoin?

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Hi, This is Sherly We could build a website. Payment could be released after you are completely satisfied with our output. our recent online store wordpress site in woocommerce. [login to view URL] https:// Lisää

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