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Easy-Add Modules

Optiset modules extend the functionality of your Optiset system phones.

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Optiset E Key Module Optiset E Key Module

Optiset E Key Module

Optiset E Key Module

Double or triple your speed-dialing power with a Key Module
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Black Box Resale Services offers budget-friendly communications solutions guaranteed to perform.

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Save up to 60% on refurbished and next-to-new telephones, cards, systems, headsets, conference phones, and wireless/mobile equipment.

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Black Box Resale Services
helps customers substantially reduce telephony hardware expenses, provides streamlined product sourcing, and guarantees peace of mind.