Yahoo! Voice is a
Voice over IPVoice over Internet Protocol is a family of technologies, methodologies, communication protocols, and transmission techniques for the delivery of voice communications and multimedia sessions over Internet Protocol networks, such as the Internet...
PC-PC, PC-Phone and Phone-to-PC service , provided by
Yahoo!Yahoo! Inc. is an American multinational internet corporation headquartered in Sunnyvale, California, United States. The company is perhaps best known for its web portal, search engine , Yahoo! Directory, Yahoo! Mail, Yahoo! News, Yahoo! Groups, Yahoo! Answers, advertising, online mapping ,...
via its
Yahoo! MessengerYahoo! Messenger is an advertisement-supported instant messaging client and associated protocol provided by Yahoo!...
instant messagingInstant Messaging is a form of real-time direct text-based chatting communication in push mode between two or more people using personal computers or other devices, along with shared clients. The user's text is conveyed over a network, such as the Internet...
application. Yahoo! Voice uses the Session Initiation Protocol (
SIPThe Session Initiation Protocol is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol . The protocol can be used for creating, modifying and terminating two-party or multiparty sessions...
), GIPS codec and the
DialpadDialpad Communications was an early pioneer in the Voice over IP industry that was founded in 1999 after spinning off from Serome Technologies in Seoul, Korea and moving to Santa Clara, California in the United States...
engine for
voiceVoice may refer to:* Human voice* Voice control or voice activation* Writer's voice* Voice acting* Voice vote* Voice message-In film:* Voice , a 2005 South Korean film* The Voice , a 2010 Turkish horror film directed by Ümit Ünal...
transport. Since 2008 the service has been provided by
JAJAHJajah is a VoIP provider, founded by Austrians Roman Scharf and Daniel Mattes in 2005. The Jajah headquarters are located in Mountain View, CA, USA, and Luxembourg. Jajah maintains a development centre in Israel...
, an outsourced VoIP provider.
Yahoo! Phone Out
PC-to-Phone calls to
landlineA landline was originally an overland telegraph wire, as opposed to an undersea cable. Currently, landline refers to a telephone line which travels through a solid medium, either metal wire or optical fibre, as distinguished from a mobile cellular line, where transmission is via radio waves...
s and mobile phones with the Yahoo! Phone Out service (charges apply). Conference calls from PC to Multiple (PSTN) phones or mobiles is currently not supported.
The limitations imposed by packet switched networks, specially referring to the packet scheduling service (be it over a cable, over the air, etc), introduce a problematic operation since end users do not always count with last mile access networks that provide real time packet scheduling, which means a prioritized and very shortly delayed transmission of data, which is needed to the perception of a natural communication with no delays or holes; In contrast the vast majority of users have Best Effort packet scheduling services (most of the operators who provide ADSL, wifi, wimax, satellite without implying that those technologies are restricted, only the business models are) for all their data transmission needs and therefore when the demand of other users is high or the over the air conditions (radio signal strength/interference ratio/BER) are not met the communication is felt delayed, cut, bad quality; But this Behavior is not VoIP Solution specific problem but business specific or access technology specific (in the case certain technical aspects must be met for an always non-delayed data transmission), therefore the same problems are found in any other type of VoIP solution.
Yahoo! Phone In
Phone-to-PC calls on computer can be received from landline or mobile phones. With the Yahoo! Phone In service, one can choose a phone number in three countries (US, UK and France).
Unsupported Functionality
- Voice call encryption
In cryptography, encryption is the process of transforming information using an algorithm to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is encrypted information...
- PC-Phone (Multiple) Conference calls
External links
The source of this article is
wikipedia, the free encyclopedia. The text of this article is licensed under the
GFDL.
