Technical data

Release 5.0.x Turin Networks Page 10-1
10.1 TL-1 Interface
Transaction Language 1 (TL-1) is the most widely used management protocol in telecommunications. It
manages most of the broadband and access networks in North America and is increasingly being used
worldwide for newer management applications. TL-1 is also the preferred Command Line Interface (CLI)
for telecom network elements. All TE-2020 NE functionality is supported via TL-1 commands. TL-1
access is supported via the following methods:
• Locally by the front craft Ethernet interface
• Locally by the two rear Ethernet interfaces
• Locally by the rear RS-232 DB-9 interface
• Remotely by an external data communication network to the Ethernet ports.
• Remotely by either the serial interface or the Ethernet ports through the data communications
channel (DCC).
For further information on TL-1 commands, refer to the Turin Networks TE-2020 TL-1 Reference Guide
(WR-D2020-TL1-050000).
10.1.1 Gateway Network Elements
A Gateway Network Element (GNE) is a TE-2020 node that terminates an IP VPN tunnel from TN-Xpert.
The GNE acts as a gateway to provide management communication between all subtending NEs and TN-
Xpert via the IP VPN tunnel. Refer to Figure 10-1.