Portico TVA
Encyclopedia
A Telephone VoIP Adapter (or TVA) is a device that allows traditional digital PBX (Private branch exchange) telephone handsets e.g. Nortel
Meridian & BCM or Siemens
Optiset/Optpoint, to be connected to a VoIP network, using, for example, SIP (Session initiation protocol
).
Comparison can be made with an ATA (Analog Telephone Adapter), which allows analog phones to be connected to VoIP networks. A TVA can also be called a Digital Telephone Adapter
, as it allows digital phones to connect to a VoIP network.
A Centrex
TVA VoIP enables centrex phones, such as Nortel P-Phones, and analog-based Centrex phones like BT Featureline.
Some telecoms manufacturers have produced hybrid exchanges with TVA-like elements. So they support IP phones and also have units or cards that allow connection of the traditional digital phones. For instance Avaya IP Office release 7.0 supports expansion modules for Avaya's digital phones, or alternatively "heritage" Nortel Norstar/BCM phones.
Whether a standalone TVA (such as Citel's Portico TVA) or a hybrid PBX is deployed, the intention is to preserve investment in an installed base of telephone handsets, and remove the need to install ethernet infrastructure.
Nortel
Nortel Networks Corporation, formerly known as Northern Telecom Limited and sometimes known simply as Nortel, was a multinational telecommunications equipment manufacturer headquartered in Mississauga, Ontario, Canada...
Meridian & BCM or Siemens
Siemens
Siemens may refer toSiemens, a German family name carried by generations of telecommunications industrialists, including:* Werner von Siemens , inventor, founder of Siemens AG...
Optiset/Optpoint, to be connected to a VoIP network, using, for example, SIP (Session initiation protocol
Session Initiation Protocol
The 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...
).
Comparison can be made with an ATA (Analog Telephone Adapter), which allows analog phones to be connected to VoIP networks. A TVA can also be called a Digital Telephone Adapter
Digital television adapter
A digital television adapter , or digital-to-analog converter [set-top box], or commonly known as a converter box, it is a television tuner that receives a digital television transmission, and converts the digital signal into an analog signal that can be received and displayed on an analog...
, as it allows digital phones to connect to a VoIP network.
A Centrex
Centrex
Centrex is a portmanteau of central exchange, a kind of telephone exchange.In the United Kingdom, British Telecom markets this service as FeatureLine .-Use of Centrex:...
TVA VoIP enables centrex phones, such as Nortel P-Phones, and analog-based Centrex phones like BT Featureline.
Some telecoms manufacturers have produced hybrid exchanges with TVA-like elements. So they support IP phones and also have units or cards that allow connection of the traditional digital phones. For instance Avaya IP Office release 7.0 supports expansion modules for Avaya's digital phones, or alternatively "heritage" Nortel Norstar/BCM phones.
Whether a standalone TVA (such as Citel's Portico TVA) or a hybrid PBX is deployed, the intention is to preserve investment in an installed base of telephone handsets, and remove the need to install ethernet infrastructure.