| The Avaya DSS 4450 provides 50 additional programmable buttons to your Avaya 4424D+ or 4424LD+.
Avaya DSS 4450 Features
- Adds 50 additional programmable buttons to your 4424D+ or 4424LD+
- Improves call handling by showing busy/idle status of all phones
Compatibility
- Compatible with Avaya 4424D+ or 4424LD+
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