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Nortel Networks NT8B90AL-93 Analog Terminal Adapter 2, rectangular box with ports and label

Nortel Networks

Nortel Networks NT8B90AL-93 Analog Terminal Adapter 2

SKU CH-FDEK-971V4

Converts Norstar digital lines to analog for phones, fax machines, modems and answering machines with 28.8 kbps data support

  • Connects analog devices to Norstar digital systems
  • Supports single-line phones, fax machines and modems
  • Enables Norstar features on standard analog handsets
  • Works in long-loop and off-premise extension setups
  • Delivers data speeds up to 28.8 kbps

Analog Terminal Adapter 2

The Nortel Networks NT8B90AL-93 connects analog devices such as single line telephones, fax machines, modems and answering machines to a Norstar digital system. It suits offices that need to retain existing analog endpoints while using Norstar features like call waiting and call forward. The adapter supports both long loop and off-premise extension configurations. It is a practical bridge for mixed analog and digital environments.

Data speed up to 28.8 kbps

The ATA-2 handles faster data transmission speeds reaching 28.8 kbps, which is adequate for standard fax and modem traffic on analog lines. Voice calls and basic telephony features operate within this bandwidth without issue. The adapter will not support higher-speed data protocols that exceed this limit. Buyers needing faster modem or broadband rates should look elsewhere.

Norstar digital interface conversion

The unit converts the Norstar digital interface to analog, allowing straightforward connection of single line sets to the system. Its role is limited to this translation function, so it does not add extra ports or routing capabilities beyond the analog link. Installers should verify compatibility with their specific Norstar deployment before purchase. The adapter is supplied new and ready for integration.

How it compares

Measured against everything we stock in Headsets, Cords & Phone Mounts, at today’s prices. Recalculated every night.

Price $53.99
Pricier than about 73% of the 796 comparable items (median $17.99).

Specifications

No published specifications for this item yet.

Questions about this item

Will the NT8B90AL-93 adapter work with my existing Norstar digital system and analog phones?

Yes, it converts the Norstar digital interface to analog so single-line telephones, fax machines, modems, and answering machines can connect and use system features such as call waiting and call forward.

How can I verify the ATA-2 is operating correctly after installation?

Connect an analog device and confirm you hear dial tone, can place and receive calls, and that Norstar features like call forward activate normally; the adapter supports data speeds up to 28.8 kbps for modem or fax verification.

What comes in the box with the NT8B90AL-93 and what must I source separately?

The package includes the Analog Terminal Adapter 2 unit; you will need to provide the Norstar system cabling, analog station cable, and any single-line phones, fax machines, or modems you intend to attach.

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