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Nortel Norstar NTBB24GA MICS T1 Clock Services Card
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Nortel Norstar NTBB24GA MICS T1 Clock Services Card Nortel Norstar NTBB24GA MICS T1 Clock Services Card
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Nortel Norstar NTBB24GA MICS T1 Clock Services Card

SKU 5152 Refurbished (Grading Guide)
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Item Information
The Norstar Clock Service Card is required to synchronize the T1 to the T1 network clock or act as a master clock source, providing the clock signal for network of systems. The Norstar Services Cartridge also provides DTMF tone recognition for T1 circuits. This clock service card provides the clocking service that is required for digital networks. It is required if you are using DTI cartridges or ISDN-BRI Interface cartridges. The Services Cartridge supports all clocking that is needed on the Norstar system, regardless of the quantity or mixture of DTIs or ISDN-BRI cartridges.


  • This unit is only compatible with the Modular ICS


This cartridge cannot be used if a Copper Expansion Upgrade Cartridge is installed

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