Nortel NTLX44AA

February 3, 2026
by Peter Szoke

TruePulse is searching for Nortel NTLX44AA circuit boards for the MG-4000 /Media Gateway-4000. You may also know it as the Genband NTLX44AA, or even possibly the Ribbon Communications NTLX44AA.

The NTLX44AA, HECI code ENI250P or ENI250PAAA, is a Synchronization Resource Module in the MG-4000 Signaling Peripheral Module in the DMS-100 and CS2100 switches.

The MG4000 spans TDM and ATM domains by accepting TDM trunk signaling and translating the output into ATM formats. The TDM-to-packet gateway can reduce tandem/transit trunking congestion and help lower network operating costs. This gateway uses open system interfaces, offering both high-speed (OC-3/STS-1) and low-speed (DS-1) access, with an OC-3c interface to the ATM switching fabric.

In addition to circuit packs for the Nortel DMS-100 platform, TruePulse is interested in other Nortel platforms, including the OME 6000, Versatile Service Engine (VSE) System Switch, OME6500, and the S/DMS TransportNode OC-48 NE.  Please contact us about any surplus Nortel equipment that you have available.

Nortel NTLX44AA modules

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