What Is Voice over IP | VoIP | Part 2
What Is Voice over IP – Part 2
Other VoIP related problems and solutions are:
- Some routers can be configured to distinguish from other VoIP packets, and therefore assign them a higher priority.
- You can store in buffer packets, to make more asynchronous transmission, but this can result in an increase in latency, similar to satellite broadcasts.
- The system operator should provide a bandwidth wide enough to reduce the latency and data loss. However, that, while it is relatively easy in private networks, is much more difficult when using the Internet as a medium.
- With lower speeds of 256 kbit / s jitter problems can occur (literally nervousness, technical error in the time base when a digital sample is converted to analog). Indeed, on slow networks, the transmission delay becomes significant, and therefore the VoIP protocols use smaller packets of maximum size (usually 1500 bytes). Other protocols typically based on TCP, normally used instead of maximum size packets. If a packet arrives on a VoIP connection to the switch while it is transmitting a packet of maximum size belonging to another connection, will be delayed important, and certainly not constant.
- Privacy issues: the listing of call or conversation may be recorded by your VoIP, rather than attacks by third man in the middle. In particular, if the program is closed source and proprietary, it is more difficult to establish that there is some code spyware installed on your computer directly to the sender and receiver to record the calls, similar risk occurs if the communication is directly between sender and recipient, and all packets passing through a central server maintained by your VoIP.
- The digitization of the signal VoIP allows you to implement encryption and other forms of data protection in transit on the network. The most common call to PSTN line travels in the clear, at least two of deliveries, with one node and another starting with the receiver (the common telephone may not have installed a protocol for data protection or communication by analog signal could support it).
- Another guard is the fact that voice packets are routed on different nodes, which vary over time, whereas in communication with the analog signal the entire contents of the call follows the same path and the same goes for network equipment.
