VoIP is time critical, and has minimal tolerance for packet loss and disruption. Ensuring quality of service (QoS) in a VoIP network minimizes latency and delay variation (jitter).
- [Tutor] Many businesses see the benefit of choosing…a voice over IP solution as they can save money…on phone calls and integrate within…a unified communication system.…When implementing a VoIP solution,…it must ensure the same or better quality…as a traditional telephone network.…All the benefits in the world won't matter…if the voice quality is poor.…Many things can affect voice quality.…Some things we can't control such as weather conditions…and an overburdened internet.…
However, on an internal network; there are a few things…we can do to proactively ensure the network…will handle the voice traffic such as bandwidth,…equipment selection and configuring quality of service.…There are several issues that affect voice quality.…They include latency.…That's a delay in packet delivery.…Jitter which is a delay variation of packet delivery…and packet loss; this is when packets are dropped…and there's many reasons this may happen.…
A knee-jerk reaction to VoIP issues…is simply adding more bandwidth.…Studies show adding more bandwidth is not the answer.…
Lisa Bock compares the traditional Public Switched Telephone Network (PSTN) to VoIP, and discusses the framework and components necessary for VoIP to be possible. She reviews codecs, including characteristics such as bitrate and voice quality; protocols for setup, communication control, and data transport; and media gateways, signaling protocols, and intermediary systems such as translators and mixers. Lisa then reviews business integration and the importance of conducting a needs analysis and network assessment prior to implementation. Learn about the many value-added services UC can provide, such as integrating VoIP with email, billing, management software, and other customer management systems. Lisa wraps up with a discussion on how ensuring quality of service (QoS) in a VoIP network minimizes latency and jitter and the importance of VoIP security to prevent malware, impersonation, hijacking, and denial of service attacks.
- History and evolution of PSTN
- UC overview and components
- Gateways, including signaling gateways, translators, and mixers
- Integrating VoIP and UC into your business network