Nortel NTBB25GA-93 6-Port Fiber Combo Expansion Cartridge

Nortel NetworksSKU: NT6PFCEC
Condition: New
Warranty: 3 Month Warranty

Sale price$159.00

We exclusively offer FedEx Ground Shipping for all your purchases with We promise speedy delivery, offering FedEx shipping, and getting your orders out the door as fast as possible (usually same day). We primarily ship using FedEx Ground service, however we reserve the right to ship any other standard (or other) method. Business-day standard shipping orders placed by 2:00 pm PST usually ship the same day.

Covid-19 & Returns: Due to Covid-19, certain manufacturers we carry are no longer accepting returns on their products until further notice and they are only offering replacements if an item is not working. Please feel free to contact us via phone or email to confirm the return policy on any item you might be interested in before purchasing on our website.


This Norstar Combo Cartridge allows the addition of up to six Fiber Trunk or Fiber Station Modules. As well as the Services cartridge functions for DTI synchronization to the T1 network clock or act as a master clock source, providing the clock signal for networked systems. The Combo Cartridge also supports DTMF tone recognition for T1 circuits. One Combo Cartridge will support two DTI cartridges, but for systems with growth potential past six ports, two Combo Cartridges could be used to double the DTMF capabilities for T1 circuits. This cartridge uses a fiber-optic DS-30 cable that is included when enlarging the system past six ports with T1 networking.

More Information

  • Mnfr. Part #: NTBB25GA-93
  • Connects additional Fiber Trunk and/or Station Modules to a maximum of 12 expansion ports
  • Also provides the clocking service require to support T1 or ISDN-PRI on the DTI cartridge or an ISDN-BRI cartridge
  • Fits into slots 1 and 2 of the Modular ICS and works with XC software, and regular DR 1.1 or later software
  • Requires fiber connections
  • Compatible with Modular ICS core only

Payment & Security

American Express Apple Pay Diners Club Discover JCB Mastercard Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

You may also like

Recently viewed