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VoIP Vulnerabilities
VoIP is vulnerable to similar types of attacks that Web connection and emails are prone to. VoIP attractiveness, because of its low fixed cost and numerous features, come with some risks that are well known to the developers an are constantly being addressed. But these risks are usually not mentioned to the business which is the most common target. VoIP also allows the use of fraud and shady practices that most people are not aware of. And while this practices are restricted by most providers, the possibility that someone is using them for their own gain still exists. Vulnerabilities Remote eavesdropping Unencrypted connections lead to communication and security breaches. Hackers/trackers can eavesdrops on important or private conversations and extract valuable data. The overheard conversations might be sold to or used by competing businesses. The gathered intelligence can also be used as blackmail for personal gain. Network attacks Attacks to the user network, or internet provid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VoIP
Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the Internet, rather than via the public switched telephone network (PSTN), also known as plain old telephone service (POTS). Overview The steps and principles involved in originating VoIP telephone calls are similar to traditional digital telephony and involve signaling, channel setup, digitization of the analog voice signals, and encoding. Instead of being transmitted over a circuit-switched network, the digital information is packetized and transmission occurs as IP packets over a packet-switched network. They transport media streams using special media delivery protocols t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VoIP Phone
A VoIP phone or IP phone uses voice over IP technologies for placing and transmitting telephone calls over an IP network, such as the Internet. This is in contrast to a standard phone which uses the traditional public switched telephone network (PSTN). Digital IP-based telephone service uses control protocols such as the Session Initiation Protocol (SIP), Skinny Client Control Protocol (SCCP) or various other proprietary protocols. Types VoIP phones can be simple software-based softphones or purpose-built hardware devices that appear much like an ordinary telephone or a cordless phone. Traditional PSTN phones can be used as VoIP phones with analog telephone adapters (ATA). A VoIP phone or application may have many features an analog phone doesn't support, such as e-mail-like IDs for contacts that may be easier to remember than names or phone numbers, or easy sharing of contact lists among multiple accounts. Generally the features of VoIP phones follow those of Skype and other P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caller ID
Caller identification (Caller ID) is a telephone service, available in analog and digital telephone systems, including voice over IP (VoIP), that transmits a caller's telephone number to the called party's telephone equipment when the call is being set up. The caller ID service may include the transmission of a name associated with the calling telephone number, in a service called Calling Name Presentation (CNAM). The service was first defined in 1993 in International Telecommunication Union—Telecommunication Standardization Sector (ITU-T) Recommendation Q.731.3. The information received from the service is displayed on a telephone display screen, on a separately attached device, or on other displays, such as cable television sets when telephone and television service is provided by the same vendor. Value to society includes use by suicide-prevention hot lines and enabling businesses "like pizza restaurants and florists" to quickly have confidence in telephoned orders. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caller ID Spoofing
Caller ID spoofing is the practice of causing the telephone network to indicate to the receiver of a call that the originator of the call is a station other than the true originating station. This can lead to a caller ID Caller identification (Caller ID) is a telephone service, available in analog and digital telephone systems, including voice over IP (VoIP), that transmits a caller's telephone number to the called party's telephone equipment when the call is ... display showing a phone number different from that of the telephone from which the call was placed. The term is commonly used to describe situations in which the motivation is considered malicious by the originator. One effect of the widespread availability of Caller ID spoofing is that, as AARP published in 2019, "you can no longer trust call ID." History Caller ID spoofing has been available for years to people with a specialized digital connection to the telephone company, called an Integrated Services Digit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comparison Of VoIP Software
This is a comparison of voice over IP (VoIP) software used to conduct telephone-like voice conversations across Internet Protocol (IP) based networks. For residential markets, voice over IP phone service is often cheaper than traditional public switched telephone network (PSTN) service and can remove geographic restrictions to telephone numbers, e.g., have a PSTN phone number in a New York area code ring in Tokyo. For businesses, VoIP obviates separate voice and data pipelines, channelling both types of traffic through the IP network while giving the telephony user a range of advanced abilities. Softphones are client devices for making and receiving voice and video calls over the IP network with the standard functions of most ''original'' telephones and usually allow integration with VoIP phones and USB phones instead of using a computer's microphone and speakers (or headset). Most softphone clients run on the open Session Initiation Protocol (SIP) supporting various codecs. Skype ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
INVITE Of Death
An INVITE of Death is a type of attack on a VoIP-system that involves sending a malformed or otherwise malicious SIP INVITE request to a telephony server, resulting in a crash of that server. Because telephony is usually a critical application, this damage causes significant disruption to the users and poses tremendous acceptance problems with VoIP. These kinds of attacks do not necessarily affect only SIP-based systems; all implementations with vulnerabilities in the VoIP area are affected. The DoS attack can also be transported in other messages than INVITE. For example, in December 2007 there was a report about a vulnerability in the BYE message ("BYE BYE") by using an obsolete header with the name "Also". However, sending INVITE packets is the most popular way of attacking telephony systems. The name is a reference to the ping of death attack that caused serious trouble in 1995–1997. VoIP Servers (INVITE of Death) The INVITE of Death vulnerability was found on February 16 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of VoIP Companies
is a list of notable companies providing voice over Internet Protocol (VoIP) services. {, class="wikitable sortable" , - ! Company !! Base of operations !! Country !! Services provided , - , EMAXX , , Concord, Ontario , , Canada , , A-Z voip routes seller , - , Access Communications , , Regina, Saskatchewan , , Canada , , Cable television services , - , AstraQom , , Ottawa, Ontario , , Canada , , VoIP services and integrated communication solutions , - , AudioCodes , , Airport City , , Israel , , Networking products and applications to service providers and enterprises , - , AVM GmbH , , Berlin , , Germany , , DSL, ISDN, Wireless, and VoIP products for communications devices , - , BigAir , , Sydney , , Australia , , DSL services and Australia's National Broadband Network , - , Comwave , , Toronto , , Canada , , Web and Mobile applications, VoIP telephone service, broadband internet providers, and commercial telecommunication service , - , Fastweb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mobile Communications Over IP
MoIP, or mobile communications over internet protocol, is the mobilization of peer-to-peer communications including chat and talk using internet protocol via standard mobile communications applications including 3G, GPRS, Wi-Fi as well as Wimax. Unlike mobile VoIP, MoIP is not a VoIP program made accessible from mobile phones or a switchboard application using VoIP in the background. It is rather a native mobile application on users’ handsets and used to conduct talk and chat over the internet connection as its primary channel. How MoIP (mobile) works MoIP applications typically work without any proprietary hardware, are enhanced with real-time contact availability (presence) and save the users money by utilizing free Wi-Fi internet access or fixed internet data plans instead of GSM (talk) minutes. They are completely mobile-centric, designed and optimized specifically for mobile-handsets environment rather than the PC. Alternate definition MoIP is also sometimes used to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voice Over WLAN
Voice over Wireless LAN (VoWLAN), also Voice over WiFi (VoWiFi), is the use of a wireless broadband network according to the IEEE 802.11 standards for the purpose of vocal conversation. In essence, it is Voice over IP (VoIP) over a Wi-Fi network. In most cases, the Wi-Fi network and voice components supporting the voice system are privately owned. VoWLAN can be conducted over any Internet accessible device, including a laptop, PDA or VoWLAN units which look and function like DECT and cellphones. Just like for IP-DECT, the VoWLAN's main advantages to consumers are cheaper local and international calls, free calls to other VoWLAN units and a simplified integrated billing of both phone and Internet service providers. Although VoWLAN and 3G have certain feature similarities, VoWLAN is different in the sense that it uses a wireless internet network (typically 802.11) rather than a cellular network. Both VoWLAN and 3G are used in different ways, although with a femtocell the two c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
