Avaya TN746B DEFINITY / G3 PBX Expansion Card

Avaya TN746B DEFINITY / G3 PBX Expansion Card Image 1

Avaya TN746B Analog Circuit Pack for DEFINITY and G3 PBX systems.

The Avaya TN746B is an analog circuit pack designed to provide analog line interfaces within Avaya’s legacy PBX systems. This card enables the connection of analog devices such as fax machines, modems, and analogue telephones to the digital switching infrastructure.

The TN746B is engineered for deployment in Avaya DEFINITY and G3 series communications systems, where it occupies a slot in the system’s port carrier. It delivers reliable analog connectivity for environments that still require traditional analogue endpoints alongside digital and IP telephony.

This is a legacy product associated with Avaya’s older DEFINITY platform, which has been superseded by more modern IP-based solutions. However, the TN746B remains essential for organisations maintaining existing DEFINITY or G3 installations and requiring ongoing analog connectivity.

Available from Tech Star as new or refurbished stock. Submit a price enquiry for availability and lead time.

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Frequently asked questions

Is the Avaya TN746B refurbished or new?
Tech-Star supplies both new and refurbished Avaya TN746B. Refurbished items are tested and graded against manufacturer specifications; the condition is confirmed at quote.
What warranty is included with the Avaya TN746B?
Refurbished Avaya TN746B comes with a 90-day parts and labour warranty as standard. Extended warranty options are available on request.
How do I get a price for the Avaya TN746B?
Pricing reflects current stock and lead time, so we quote per enquiry. Submit the part number through the contact form for a quote, typically within one business hour.
Can the Avaya TN746B be returned?
Returns are accepted within 14 days of delivery in line with our return policy. A restocking fee may apply for opened items.
How quickly can the Avaya TN746B be delivered?
Lead time depends on current stock. UK-based items typically ship the next business day; sourced items vary. We confirm lead time at quote.

Key FeaturesAnalog line interface; Supports analogue endpoints; Carrier slot installation; Legacy PBX integration
ApplicationsFax machine connectivity; Analogue telephone support; Modem connections; Legacy PBX environments
CompatibilityAvaya DEFINITY systems; Avaya G3 series PBX
SpecificationsAnalog circuit pack; TN746B variant
PlatformDEFINITY / G3
ManufacturerAvaya

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