ALERT

[LAST CHANCE] Data Layer: Modern Business, Defined

Terminal Adapter (TA)

Definition - What does Terminal Adapter (TA) mean?

A terminal adapter (TA) is a device that connects a computer to an integrated services digital network (ISDN). The terminal adapter transmits digital data directly from the computer to the ISDN line without having to modulate and demodulate between analog and digital signals.

Some manufacturers refer to a terminal adapter as an ISDN modem. This term is partially misleading because the modem does not perform the modulating and demodulating functions.

A TA may be an internal or built-in device for a computer, or it may be an external device connected to an RS-232 serial port or USB port.

Techopedia explains Terminal Adapter (TA)

There are devices that combine the functions of a modem with those of a terminal adapter. These allow ISDN connections and also function as modems by modulating analog signals to transmit digital data and demodulating analog signals to receive digital data.

Some TAs may contain an interface and codec (a device or software for encoding and decoding digital data) for one or more telephone lines. These TAs enable the upgrade of a regular telephone service to ISDN without the purchase of new telephones.

In mobile networks, a TA is used by terminal equipment to allow mobile termination (when a mobile phone user terminates a call originating in another network and paid for by the originator in another network). With 2G equipment, the TA is optional, but with 3G equipment it is mandatory and part of the mobile termination.

In the automation industry, a TA is a passive device that changes a regular connector such as an RJ-45 modular jack into a terminal block (a strip of terminal connection points) to accommodate proper wiring.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
Tweat cdn.techopedia.com
"Techopedia" on Twitter


'@Techopedia'
Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Resources
The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.