Nortel NTAU73AB 6-Port Legacy Data Module (LDM) Expansion

6-Port Legacy Data Module (LDM) Expansion

Low-speed data service is provided via the Legacy Data Module (LDM). This module provides interface ports that support legacy data protocol in Passport 4400 units.

Data Link Protocol: Frame Relay, SDLC
Network / Transport Protocol: SNA, X.25, DLC/LLC

Manufacturer: Nortel Networks Limited
Manufacturer Part Number: NTAU73AB
Brand Name: Nortel
Product Model: NTAU73AB
Product Name: 6-Port Legacy Data Module (LDM)
Product Type: Expansion Module
Application/Usage: Data Networking
Interfaces/Ports: 6 x Serial
Interfaces/Ports Details: 6 x 50-pin DB-50 Serial
Interfaces/Ports Details: 1 x RJ-45 Serial Management
Connectivity Media: Serial Cable
Compatibility: Nortel Multi-Service Switch 4400

This Nortel NTAU73AB 6-Port Legacy Data Module (LDM) Expansion is in refurbished condition and is fully guaranteed by our 90-day warranty. Please feel free to contact us regarding our inventory of refurbished Nortel networking equipment, or if you have any additional questions regarding this NTAU73AB 6-Port Legacy Data Module (LDM) Expansion.

United States of America Shipping


Orders for this Nortel NTAU73AB unit which qualify for Free Super-Saver Shipping are shipped at our discretion via the lowest cost method. We use FedEx, UPS, and US Postal Service as shipping carriers. We cannot ship this Nortel NTAU73AB within the USA by billing directly to your shipper account number. All shipping charges must be pre-paid at checkout.


International / Foreign Shipping


Nortel NTAU73AB 6-Port Legacy Data Module (LDM) Expansion units which are shipped internationally have a mandatory 4-10 business day security holding period between payment being received and shipment processing. This security policy is to allow funds to fully clear our bank account. International transport costs can be charged directly to your FedEx or UPS account number. We cannot ship internationally using your TNT account number; however you can coordinate with TNT to have them pick up the shipment from our location.


Expedited and Rush Shipping can usually provide expedited (1 or 2 day shipping) for Nortel products; however there is an additional rush fee per unique Nortel NTAU73AB 6-Port Legacy Data Module (LDM) Expansion unit in addition to the product cost and expedited carrier shipping charges. If we can offer expedited shipping for an item, expedited shipping costs will be shown at checkout. If we cannot provide expedited shipping for an item, then you will not be presented with these options during the cart checkout process.

  • Manufacturer: Nortel
  • Part Number: NTAU73AB
  • Units in Stock: 3
  • Condition: Refurbished
  • Warranty: 90 Days
  • Description: Nortel NTAU73AB 6-Port Legacy Data Module (LDM) Expansion

  • Usually ships next business day.
    Overnight and expedited shipping services available.
  • Price: $1,484.95