VoIP in Details
ADSL (Asymmetric Digital Subscriber Line): a DSL option that allows users to transmit data at a speed of up to 24 Mbps, and from the user at speeds up to 3.5 Mbps.
ADSL2 is a modification of the “classical” ADSL technology. They were developed taking into account the increased requirements of providers and end users. In ADSL2 and ADSL 2+, with practically the same transmission range as in ADSL, the speeds are increased to 12 and 25 Mbit / s, respectively. In addition, the adaptive speed change function is implemented. Thanks to these changes, it became possible to support a large number of new applications and additional services (video, multimedia, etc.). Continue reading
Greetings everyone! The network already has a lot of articles written about the fact that SBC protects the VoIP network and prevents theft of traffic, reflects the DoS / DDoS attacks and provides full VoIP security services. However, very little is written about real attacks in the world of VoIP and SIP, and which technologies provide security. In the article we tried to describe, what are the attacks in the VoIP world, what is its peculiarity, what is their difference from usual network attacks, and how does AudioCodes SBC prevent these attacks and provides the same protection that everyone writes about. Continue reading
Even if you do not use VoIP in your corporate system, or it’s not your main direction, you might be interested in the monitoring method itself using forecasting because it can be successfully used not only for VoIP transit. The monitoring method is considered using the example of an application to transit VoIP because this task is a vivid example of its use. Standard methods do not solve the problem, and monitoring by forecasting is relatively simple. What is written below, is not a theoretical study, it has been successfully used for several months in practice. Continue reading
Voice communication via IP-network can be carried out in various ways:
This option is not an example of IP-telephony, since the voice is transmitted only over a data network, without access to the telephone network. To organize the traffic transfer, the user acquires the necessary equipment and software and pays the provider for the operation of the communication channel. The advantage of this option is the maximum cost savings. The disadvantage is the minimal quality of communication. Continue reading
It should be noted that the wireless local area network (LAN) is only a part of the whole transmission channel, through which voice packets pass between the source and the receiver.
The quality of the connection depends on the characteristics of all the elements of the path. Whatever we discuss – the loss of packages or the reasons for the delay – the quality of each element of the path determines its overall work quality. Continue reading
One of the great engineering achievements of the twentieth century is wide access to the public telephone network. In many countries, the users experience some downtime in just 5 minutes per user per year or even less, equivalent to 99.99905% of availability. Continue reading