Comparatively wireless VoIP is slower than VoIP in wired network. Thus deployment of wireless VoIP needs to consider the real need of wireless VoIP to the corporate network. It is not the point to implement the latest technology but to implement the best system which serves the purpose of the corporate network. Below mentions are basic guidelines for wireless VoIP deployment and this can greatly vary according to the organizational requirements.
1. Make sure the network can handle VoIP.
When moving from wired communication channels to wireless communication channels it is vital to check whether current organizational structure is capable of handling the wireless VoIP requirement adequately and provide the level of expected results. Since data and voice are going to be transmitted through shared medium if the corporate network is also a wireless LAN. Even with the wired data network voice transmission required to be prioritized due to its real time requirement.
Determining the network's readiness for VoIP is essential. A readiness assessment to establish the baseline capabilities of the network will help determine which areas of the overall system need to be fine-tuned or upgraded to support the streaming media requirements of VoIP.
2. Keep the deployment simple.
Deployment of wireless VoIP should take place in parallel or pilot deployment due to the fact that if anything got backfired in the corporate network, it is easy to rectify and resolve without having to shutdown the whole communication lines. This pilot deployment helps to measure the pros and cons of the wireless VoIP implementation and take necessary actions in due places.
3. Create network service maps and update service-level agreements.
During pre-deployment, network administrators should create maps of the network and define service-level agreements with internal departments and external clients. With a proper inventory of the network in the form of a service map, administrators will be able to pinpoint potential bottlenecks and areas of the network that need to be upgraded or extended to support the additional traffic.
Setting requirements in advance is essential, because appropriate expectations and regular feedback between business owners, technology departments and end-users will result in a more successful VoIP experience. Define the policies for ongoing monitoring, performance measurement and management of the network and the VoIP system. Typical SLA metrics include network uptime, application availability, and network and application response time. The data gathered is used to measure pertinent service delivery aspects, such as delay, jitter and uptime, and report confirmation that all requirements and expectations are being met.
4. Consider QoE.
Quality of experience (QoE) is a way to understand the user's perception of the quality of the VoIP telephone systems which can give a correct feedback of the systems that you have implemented. QoE will help measure the success of the wireless VoIP deployment from the end users level.
5. Review, reassess and repeat.
Networks are not static, so implementing an ongoing monitoring process is important. Any change to the infrastructure or usage patterns has an impact to everything on the network. Bringing servers on and offline, upgrading hardware or virtualizing portions of the environment can impact VoIP services.
Continuous monitoring and measurement of IT operations and service-level reporting will provide needed information to quickly resolve network outages and system issues. This technical and business intelligence analysis supports service improvement plans that will sustain the VoIP implementation and make sure end-users do not experience call degradation issues.
Much of the management of the VoIP system and applications can be automated to allow network assessment and monitoring to be repeated consistently to maintain appropriate baselines. Baselines enable administrators to monitor performance and availability, as well as prevent, diagnose and resolve problems.
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