3863

TL1 - The origin of today's widely used protocol

Previous: SNMP Types
Next: Partner Praise

Part 1 | Part 2

In the early 70's, network operations began to increase and many companies started using Man-Machine Language (MML), a protocol readable by both humans and machines, to control equipment elements both locally and remotely. In 1984, Bellcore, an equipment manufacturer and research institute for the Regional Bell Operating Companies (RBOCs) and the de facto standards organization throughout the 80's, specified Transaction Language 1 (TL1) as the standard protocol.

Bellcore changed its specification in 1988 to Common Management Interface Protocol (CMIP), another ASCII-based human readable language. However, perhaps because of its perceived complexity, CMIP was never widely implemented and TL1 continues to be the dominant network management protocol.

After divestiture, many new companies began using a variety of protocols within their networks, but TL1 remains arguably the most widely used protocol in North America today.

TL1 is a highly structured management interface that uses a standard command line interface while providing for vendor extensions where appropriate. Messages for fault, configuration, performance, security and testing can all be accommodated by a TL1 interface.

The TL1 protocol is considered a legacy protocol because of its age but is still being used in a variety of new equipment. Mediation of TL1 is increasingly important with different protocols being used in contemporary telemetry monitoring networks.

Learn More

DPS is here to help.

1-800-693-0351

Have a specific question? Ask our team of expert engineers and get a specific answer!

Ask an Expert DPS Telecom Get a Fast Answer!

Click here for more information.

Get the Alarm Fundamentals White Paper

Download our free Monitoring Fundamentals Tutorial.

An introduction to Monitoring Fundamentals strictly from the perspective of telecom network alarm management.

Download Alarm Fundamentals White Paper Download White Paper

Click here for more information.

Having trouble finding the perfect solution?

Get Help

No other network on the planet is exactly like yours. We manufacture hundreds of product variations per year that are customized to our clients' exact spec, all while providing training, tech support, and upgrade availability.

Send us a quick online message about what you're trying to accomplish. We'll give you a call and work with you to design a perfect-fit solution for your network.

Hours: Monday - Friday
7:00 a.m. - 6:00 p.m. PST
Tech Support: (559) 454-1600 / support@dpstele.com
Sales: Domestic: (800) 693-0351
International: 1+ (559) 454-1600