Voice over IP (VoIP) can give significant savings on your telephone service by allowing you to make phone calls. Through an IP network rather than the traditional telephone companies’ public switched telephone network (PSTN). Many enterprises currently operate IP networks through wireless technologies, and VoIP applications may also be run over Wi-Fi. However, there are several difficulties to consider when designing a VoIP over wireless (VoW, VoFi, or wVoIP) implementation.
With the introduction of WiMAX for longer-distance Wi-Fi communications. Wireless phone providers (cellular carriers) are preparing to sell hybrid phones that will use VoIP over Wi-Fi. When one is available and switch to cellular when one is not. Depending on the context, VoIP over wireless might mean a variety of things.
#1: Wireless VoIP outperforms cellular service
A key advantage of wireless VoIP is that IP phones that function on Wi-Fi networks may use in place of mobile phones in many circumstances. Public 802.11 hotspots are frequently free or have a minimal daily fee. If you’re already connected to a Wi-Fi network for Web and e-mail access. There’s no extra cost to make VoIP calls other than the cost of your VoIP service. which is usually much less than the cost of cell phone service and may include free unlimited international calling. Which most cellular plans do not include.
#2: VoIP via wireless LAN has several applications
With the flexibility to move freely and sophisticated calling capabilities such as voicemail and caller ID. VoIP over a wireless LAN can enable convenient internal calling for enterprises, educational campuses, hospitals, hotels, government buildings, and multiple-tenant units such as dorms. Users can also utilise the LAN’s Internet connection and an account with a VoIP service to make calls outside the location, including local long distance and international calls, frequently at no extra fee.
#3: WiMAX expands the reach of VoIP
WiMAX is a long range microwave-based wireless technology based on the 802.16 specifications. Because WiMAX broadcasts may range up to 75 kilometres. It can give wireless broadband coverage to a complete urban region or a big rural area (46 miles). WiMAX provides the capacity to handle VoIP, with theoretical throughputs of up to 288 Mbps and actual throughputs of up to 70 Mbps.
#4: Data communication is less sensitive than voice transmission
VoIP is a real-time application, making it especially vulnerable to packet loss on a wireless network caused by weak signals, range limitations, and interference from other devices using the same frequency. To enable VoIP, your wireless network must be dependable. As customers expect their phone systems to be more dependable than their PCs. They anticipate constant dial tone, no lost calls, and great speech quality.
#5: Combining VoIP and data might lower call quality
Because VoIP applications are sensitive to any disturbance or delay, competing with data transmissions on the same wireless network can degrade audio quality. Quality of service (QoS) elements must be included to guarantee that VoIP packets prioritise.
#6: Wireless security is a greater worry
Security is already a key worry for VoIP, as transmitting phone conversations via a public IP network poses higher security concerns than utilising the telecoms’ private “closed” networks. Wireless adds another layer of security problems, as communications take place over the airwaves rather than wires, making them more vulnerable to eavesdropping. Common VoIP protocols, such as SIP, have their own set of security flaws.
Any Wi-Fi network carrying VoIP communication must be safe, with such traffic always protected by authentication and encryption.
However, many of today’s phone calls already travel across the airways, via cellular phones.
#7: Older wireless LAN equipment isn’t VoIP ready
If you want to deploy VoIP over your current data Wi-Fi network, you may be disappointed. For optimum performance, particularly in the business environment, you need wireless LAN gear and software that is expressly built to operate with voice traffic while also addressing priority and security concerns.
Look for SIP integration and policy-based administration, which allows you to prevent unwanted voice traffic.
#8: Wireless VoIP equipment is available for both consumers and businesses
Many big consumer networking equipment suppliers (LadiTech) now provide IP phones that operate with their wireless routers. D-DPH-540 Link’s IP phone, for example, supports all SIP-based VoIP services and works with 802.11b or g Wi-Fi networks. It supports encryption protocols like as WEP, WPA, and WPA2.
Simultaneously, enterprise-level hardware providers like as Cisco are introducing IP phones that operate with IP PBX systems.
#9: VoIP through wireless smart phones can help businesses save money
Many businesspeople nowadays use smart phones or portable computer phones that use the Windows Mobile operating system, such as the Samsung i730 and Treo. Cell phone companies supply these phones, and utilising the phone capabilities costs valuable minutes. International calls charge extra.
By installing Skype for Mobile on these devices, users may make free or low-cost phone calls while bypassing the cellular plan and using the phone’s Internet connection, or in the case of Wi-Fi capable devices, such as the Samsung, a wireless hotspot.
#10: Future phones will mix cellular and Wi-Fi connectivity
According to industry experts, the next generation of cell phones will all contain built-in Wi-Fi. When you come into range of a Wi-Fi hotspot, these hybrid or dual-mode phones will automatically transition between cellular and VoIP over Wi-Fi, even inside the same phone conversation.
Landlines are predicted to go extinct when hybrid phones become a single telephony solution, running off the user’s Wi-Fi network at home and using cellular technology when no Wi-Fi network is available. This is expected to reduce the overall cost of telephone service.
