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Ghost Call
A ghost call or phantom call is a telephone call for which, the recipient of the call answers, however there is no one on the other end of the call. The term is also used in managing IP PBX systems. Ghost calls on the lines that cannot be explained or are some residual output of one Real-time Transport Protocol or RTP stream interacting with the PBX. Ghost calls differ from silent calls which tend to be from telemarking organisations with no agents available to speak at the time an automated call has been placed. Causes Ghost calls are generally caused by a neglected autodialer or indirectly as a consequence of restrictions applied to autodialers used for telemarketing by agencies such as the FCC that restrict how long they can tie up a phone line; the call is disconnected automatically at the calling end. Another cause is port scanning.Tyler Kunkel"Identifying/Stopping 'Phantom' or 'Ghost' calls" Spectrum VoIP, August 15, 2019. Ghost calls can also be caused by accidental pocke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephone Call
A telephone call is a connection over a telephone network between the called party and the calling party. First telephone call The first telephone call was made on March 10, 1876, by Alexander Graham Bell. Bell demonstrated his ability to "talk with electricity" by transmitting a call to his assistant, Thomas Watson. The first words transmitted were "Mr Watson, come here. I want to see you." This event has been called Bell's "greatest success", as it demonstrated the first successful use of the telephone. Although it was his greatest success, he refused to have a telephone in his own home because it was something he invented by mistake and saw it as a distraction from his main studies. Information transmission A telephone call may carry ordinary voice transmission using a telephone, data transmission when the calling party and called party are using modems, or facsimile transmission when they are using fax machines. The call may use land line, mobile phone, satellit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IP PBX
An IP PBX ("Internet Protocol private branch exchange") is a system that connects telephone extensions to the public switched telephone network (PSTN) and provides internal communication for a business. An IP PBX is a PBX system with IP connectivity and may provide additional audio, video, or instant messaging communication utilizing the TCP/IP protocol stack. Voice over IP (VoIP) gateways can be combined with traditional PBX functionality to allow businesses to use their managed intranet to help reduce long distance expenses and take advantage of the benefits of a single network for voice and data (converged network). An IP PBX may also provide CTI features. An IP PBX can exist as a physical hardware device or as a software platform. Function IP PBX is primarily a software hosted on a regular desktop or server as per the requirement demands based on the expected traffic & criticality. Till 2019 IP PBX were deployed primarily as inbound and outbound call center solutions fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Real-time Transport Protocol
The Real-time Transport Protocol (RTP) is a network protocol for delivering audio and video over IP networks. RTP is used in communication and entertainment systems that involve streaming media, such as telephony, video teleconference applications including WebRTC, television services and web-based push-to-talk features. RTP typically runs over User Datagram Protocol (UDP). RTP is used in conjunction with the RTP Control Protocol (RTCP). While RTP carries the media streams (e.g., audio and video), RTCP is used to monitor transmission statistics and quality of service (QoS) and aids synchronization of multiple streams. RTP is one of the technical foundations of Voice over IP and in this context is often used in conjunction with a signaling protocol such as the Session Initiation Protocol (SIP) which establishes connections across the network. RTP was developed by the Audio-Video Transport Working Group of the Internet Engineering Task Force (IETF) and first published in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silent Calls
A silent call is a telephone call in which the calling party does not speak when the call is answered. Most such calls are generated by a cold call telemarketing operation's predictive dialer which makes many calls, and sometimes does not have an agent immediately available to handle an answered call; the called party hears silence (" dead air"), followed by the call being disconnected. This differs from a ghost call, which is not dialed intentionally, and is due to technical issues or pocket dialing. In the U.S., the Federal Trade Commission (FTC) uses the term "abandoned call" instead of silent call in its regulations applying to telemarketing. "Abandoned call" in non-FTC contexts may refer to a caller who hangs up when the call is not answered promptly. For more information on why the technology makes silent calls, see predictive dialer. Other reasons for silent calls People using telecommunications devices for the deaf (TDDs) and calling public agencies might expect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autodialer
An automatic dialer (also spelled auto dialer, auto-dialer, and autodialer) is an electronic device or software that automatically dials telephone numbers. Once the call has been answered, the autodialer either plays a recorded message or connects the call to a live person. When an autodialer plays a pre-recorded message, it is often called voice broadcasting, or robocalling. Some voice broadcasting messages ask the person who answers to press a button on their phone keypad, such as in opinion polls in which recipients are asked to press one digit if they support one side of an issue, or another digit if they support the other side. This type of call is often called outbound interactive voice response. When an autodialer connects an answered call to a live agent, it is often called a predictive dialer or power dialer. A predictive dialer uses real-time analysis to determine the optimal time to dial more numbers, whereas a power dialer simply dials a pre-set number of lines wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telemarketing
Telemarketing (sometimes known as inside sales, or telesales in the UK and Ireland) is a method of direct marketing in which a salesperson solicits prospective customers to buy products or services, either over the phone or through a subsequent face to face or web conferencing appointment scheduled during the call. Telemarketing can also include recorded sales pitches programmed to be played over the phone via automatic dialing. Telemarketing is defined as contacting, qualifying, and canvassing prospective customers using telecommunications devices such as telephone, fax, and internet. It does not include direct mail marketing. History The term ''telemarketing'' was first used extensively in the late 1970s to describe Bell System communications which related to new uses for the outbound WATS and inbound Toll-free services. Telephonists The rise of telemarketing can be traced back to the 19th century telephonists, or switchboard operators. Trans-cultural hiring of swi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Scanner
A port scanner is an application designed to probe a server or host for open ports. Such an application may be used by administrators to verify security policies of their networks and by attackers to identify network services running on a host and exploit vulnerabilities. A port scan or portscan is a process that sends client requests to a range of server port addresses on a host, with the goal of finding an active port; this is not a nefarious process in and of itself. The majority of uses of a port scan are not attacks, but rather simple probes to determine services available on a remote machine. To portsweep is to scan multiple hosts for a specific listening port. The latter is typically used to search for a specific service, for example, an SQL-based computer worm may portsweep looking for hosts listening on TCP port 1433. TCP/IP basics The design and operation of the Internet is based on the Internet Protocol Suite, commonly also called TCP/IP. In this system, network ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pocket Dialing
Pocket dialing (also known as pocket calling or butt dialing) is the accidental placement of a phone call while a person's mobile phone or cordless phone is in the owner's pocket or handbag. The recipient of the call typically hears random background noise when answering the phone. If the caller remains unaware, the recipient will sometimes overhear whatever is happening in the caller's vicinity. A pocket-dialed call can continue for many minutes, or until the recipient's voice mail system ends the call. The phrase "pocket dial" was added to the ''Oxford English Dictionary'' in August 2015. Causes Modern cellphones come in three configurations: "flip" phones, where the phone is physically closed rendering the keys inaccessible, touch phones where a finger or stylus is required to use the controls, and open phones, where keys or buttons are always exposed. Pocket dialing primarily occurs with touch phones and open phones. Typically, a call is caused by the person's movement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
