What is IP Telephony?
375394
IP Telephony is the technology that enables VoIP. It includes any telephone service that uses an IP network.
6829
It has to know (or record) what your IP is before establishing a ip-to-ip chat connection.
830152
Sorry, there is no website that you can do that... You will have to pay for calls to mobiles, although it is much cheaper than calling directly from your land line.\n\nWhat is free in VOIP generally is only calls to other computers...\n\nTry skype
59562
VOIP is a technology to talk over internet. It has two different varities. one is computer to computer (this what we are using in yahoo messenger,msn,skype....) and the other is computer to (PSTN) landline telephone.There are several companys providing this service like net2phone,skype,nettelephone...etc... The benefit of using VOIP is cheap. but in the quality wise you have sacrifise a bit. So choose a better company and enjoy talking your friends,....family...etc...
291038
voip is voice over internet protocol\n\nwhat are you talking about?
777851
a printer with an ip address
586717
TCP/IP dates from the the ARPANET network. ARPANET is a telecommunication network developed by the ARPA (Advanced Research Projects Agency), the research agency of the American ministry of defence (the DOD: Department Of Defense). Besides the possibility to interconnect heterogeneous networks, this network was supposed to resist to a possible nuclear war, contrary to the telephon network usually used for telecommunication but considered as too vulnerable. It was then decided that ARPANET would use a standing out and promising new technology: packet switching (datagram mode). It is to meet this context that the TCP and IP protocols were invented in 1974. The ARPA then signed several agreements with manufacturers (especially BBN) and the Berkeley University, where a Unix system was under development, to impose this standard, and that was done.
144077
The application layer of TCP/IP is the layer where applications gain access. There are many standards TCP/IP utilities and services at the Applications layer such as FTP, Telnet, SNMP and DNS. \nMicrosoft TCP/IP provides two interfaces for network applications. Windows sockets-standard application programming interface (API) under Microsoft Windows for transport protocols such as TCP/IP and IPX.
137573
There are several good ones out there.  I like broadvoice myself but there are lots of choices.  For a business, I recommend setting up your own Asterisk PBX server (it's FREE! and it's not that hard for someone reasonably technically savvy).  With your own PBX you have TOTAL control about how the phones work in your business along with the low cost of VoIP
676549
TCP/IP is a stack of protocols including such tools as telnet, ping, etc... it is combining TCP and ip for a connection oriented reliable connection.
717622
You can look for Voip (voice over internet protocal)\n\nYou can use skype type services to make cheap phone calls worldover. \n\nThe best of all is Internet esp if you are targeting globe. Challange is how to do you reach to the customers and this requires some research and professional help.
88121
This is packet switched technology versus voice switch technology. QoS is hard to relate to telephone other than Immediate, Flash, Flash Override prioreties. When you pick up a phone the switch has just opened a line to you and will constantly await a signal of your voice or dial tone, with a network switch it just waits for a packet to arrive then it decides what to do with it. So when I dial 111-2222 from a phone the phone switch makes a direct link from me to that phone number 111-2222 and doesn't allow any other circuit to connect(setting a side call waiting that is not quite circuit interuption). When I send a packet with a QoS tag it only preempts a packet of a lower value if it sitting a queue with it. If you can just keep streaming out 1500 byte packets over ethernet why prempt a signal if there is nothing to preempt it with. With VoIP you don't assemble a SIP packet until you sample a time frame of voice and then encode it and then package it to go out over ethernet. With a phone connection the phone switch is constant listening to a bandwidth of voice frequencies 0-4000 hertz. QoS is a great thing but it can be foiled by the fact you may get link saturation. Telephone lines know exactly how much voice frequency they are going to sample. While a switch will get some burst of traffic. QoS may be operating fine with other traffic while just one person is browsing the web and 2 people are talking over VoIP but say those 2 people start browsing as well. Now QoS has to preempt that web traffic it has the ethernet queue but the whole queue may be stalled by a collision or a converstation currently taking place. \n\nBasically\nPacket Switched versus Voice Switch to diffrent to compare briefly.
10662
i do wonder what a VoIP is.
894425
The Session Initiation Protocol (SIP) is a signalling protocol used for establishing sessions in an IP network. A session could be a simple two-way telephone call or it could be a collaborative multi-media conference session. The ability to establish these sessions means that a host of innovative services become possible, such as voice-enriched e-commerce, web page click-to-dial, Instant Messaging with buddy lists, and IP Centrex services\nSIP is a request-response protocol that closely resembles two other Internet protocols, HTTP and SMTP (the protocols that power the world wide web and email); consequently, SIP sits comfortably alongside Internet applications. Using SIP, telephony becomes another web application and integrates easily into other Internet services. SIP is a simple toolkit that service providers can use to build converged voice and multimedia services.\n\nIn order to provide telephony services there is a need for a number of different standards and protocols to come together - specifically to ensure transport (RTP), to authenticate users (RADIUS, DIAMETER), to provide directories (LDAP), to be able to guarantee voice quality (RSVP, YESSIR) and to inter-work with today's telephone network.
399535
Voip (Voice over internet protocol) is what makes voice chat possible over the internet. Many lite application such as skype, google Talk use Voip to provide voice chat. Though voice-chat has been around for quite a while, Voip has given it an impetus. Good quality of speech and almost no delay are the advantages of Voip
82028
By using their broad band network to transfer analog voice signals. At the end, they use IP phones that hook into the ethernet ports using RJ-45 cables instead of the regular RJ-11 cable used by regular phones. More details on http://computer.howstuffworks.com/ip-telephony6.htm .
504735
you'll have to ask the LAN IP provider.