Dual Loop Buffer Card – Refurbished QPC659B | Reliable Nortel Meridian Interface Module
CONDITION: RE-MADE IN THE USA™ Refurbished
Part Number: QPC659B
$150.00
Availability: In stock
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Product Description
Dual Loop Buffer Card – Refurbished QPC659B is a high-performance interface and data synchronization module designed for Nortel Meridian Option systems. This card provides buffering and control for digital loop communications between system components, maintaining data integrity and ensuring reliable message transmission within the PBX environment.
The QPC659B Dual Loop Buffer Card supports both primary and secondary communication loops, enabling redundancy and fault tolerance for mission-critical telecom systems. By maintaining stable data flow between network and control modules, it enhances overall system performance and reliability.
Each card is professionally refurbished, thoroughly tested, cleaned, and certified to meet OEM standards—making it a cost-effective and dependable replacement for legacy Nortel infrastructure.
Features
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Dual Loop Buffer Card – Refurbished QPC659B
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Compatible with Nortel Meridian Option PBX systems
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Supports dual-loop configuration for redundancy and reliability
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Provides message buffering and data synchronization between control circuits
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Ensures error-free communication between network modules
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Professionally refurbished and fully tested to OEM standards
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Ideal for maintaining or expanding existing Nortel PBX systems
Q & A Section
Q: What systems is the QPC659B Dual Loop Buffer Card compatible with?
A: It’s designed for Nortel Meridian Option 11C, 61C, and 81C PBX systems.
Q: What is the function of the Dual Loop Buffer Card?
A: It provides message buffering, synchronization, and redundancy between PBX control circuits to ensure uninterrupted data flow.
Q: Is this a new or refurbished card?
A: This listing is for a professionally refurbished card, fully tested to OEM specifications.
Q: Can it replace any earlier QPC659 model?
A: Yes, the QPC659B version is backward compatible with earlier QPC659 series modules.
Q: Does this card require special installation tools?
A: No. It installs directly into a compatible Meridian card slot—simply power down the system before replacement.