Security, Stability, and Interoperability Issues on VoIP Implementation

Written by Al Falaq Arsendatama

Now we have accepted that VoIP is no longer just a phone service, it has become feature rich as it merges with computer configurations. The VoIP's existence has changed considerably overrepparttar last few years, coupled withrepparttar 143015 availability of broadband connection torepparttar 143016 Internet, plus leaps in multimedia technology in which virtual operations with remote sites becomes more enhanced, makes VoIP service a viable alternative to traditional communication offerings.

Cost savings is notrepparttar 143017 only driving force for VoIP implementations, enterprises have to consider some business aspects that VoIP can bring about. VoIP creates potentials for applications that could not have been done before. Collaboration, integration, and interactivity between employees and applications are one ofrepparttar 143018 several business benefits that enterprises can derive from VoIP adoption. Nevertheless, amid euphoria of VoIP technology, there are three important aspects to look at before a company goes VoIP. Inrepparttar 143019 following paragraphs I will summarizerepparttar 143020 aspect of security, stability, and interoperability that play a key role inrepparttar 143021 successful implementation of VoIP.

1. Security

VoIP implementations may expose new security risks and challenges that somehow become greater concern than quality and cost-efficiency among vendors and users. VoIP networks are vulnerable to allrepparttar 143022 same security risks as traditional IP data networks, including:

  • Denial of Service (DoS), viruses, worms,
  • Toll fraud and unauthorized access,
  • Spoofing, and port scanning.

It is recommended that organizations should adopt a layered, defense-in-depth security strategy to addressrepparttar 143023 issue withrepparttar 143024 increasing proliferation of new Internet-borne attacks and malicious activities in recent years. In this architecture,repparttar 143025 network is segmented into secure zones protected by layers of firewall, intrusion prevention, and other security services. This strategy allowsrepparttar 143026 organizations to logically split and secure voice and data networks in front of individual voice and data components and between interactive points inrepparttar 143027 network.

2. Stability

One ofrepparttar 143028 main issues of VoIP isrepparttar 143029 amount of bandwidth required for each call. There must be adequate bandwidth reserved andrepparttar 143030 quality ofrepparttar 143031 link must be well maintained throughout each call to ensurerepparttar 143032 users are not affected. Asrepparttar 143033 very nature of VoIP call is real-time, any disruption duringrepparttar 143034 call would be easily noticeable and unacceptable. The two issues that enterprises usually have to deal with here are bandwidth and quality of service (QoS).

VoIP calls need a data transmission speed of 64kb/s to producerepparttar 143035 quality of voice comparable to that of a normal telephone call. That 64kb/s channel needs to remain open and unaffected forrepparttar 143036 duration ofrepparttar 143037 call. Theoretically, VoIP installations would not allow such a huge bandwidth to be allocated for VoIP alone. Therefore, there needs to be a compression taking place to compactrepparttar 143038 voice data into a considerable size before it gets transmitted over a packet switching network. G.723 codec that is incorporated in VoIP standard protocol H.232 can take a 64kb/s stream of data and squash it down to a mere 5.5kb/s or so. Generally, for VoIP to work reliably over WAN links, there has to be low jitter, low packet loss, a considerably high-speed connection betweenrepparttar 143039 endpoints, and less than 200ms delay.

Microsoft Great Plains: Offshore Customization & Development – overview for consultant

Written by Andrew Karasev

When you visit department stores and see that majority ofrepparttar apparels are produced in other countries, not US – you probably do not worry about this fact. About 10 years ago, when Clinton’s high tech era was atrepparttar 142917 inception – we sawrepparttar 142918 signs of high tech professionals inflow inrepparttar 142919 USA from overseas. Nowadaysrepparttar 142920 trend is reversed – instead of importing high tech people, we are atrepparttar 142921 beginning of outsourcing to them in their overseas countriesrepparttar 142922 programming workload. In this small article we’ll concentrate onrepparttar 142923 Microsoft Business Solutions Great Plains customization specifics: Great Plains Dexterity (IDE and programming language), SQL programming with XML in/out bound, VBA/Modifier/Continuum, Crystal Reports, Web publishing/eCommerce •Closed/Protected technology. Great Plains Dexterity serious development requires months of formal training and it also requires access to so-called source code (DYNAMICS.DIC with scripts in it – normally scripts are stripped). This fact imposes restrictions on offshore facility selection. This facility should be located inrepparttar 142924 country, where Great Plains Software had former development force. To give you more clue – these are Australia and Philippines. If you are considering India – we do not know if anyone there has access to source code, at least officially they do not have access, because source code partner program was closed many years ago. •Coded table names: RM00101, SOP30200 – to give you example. The reason was – Dexterity design was based onrepparttar 142925 multi-database-platform principle. Fromrepparttar 142926 development standpoint – it means that developer should have data fixing experience – serving real clients either remotely to US or in their local countries

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