![AT&T/Avaya/Lucent System Phones](http://assets.twacomm.com/assets/3498841907/dept_images/51_sm.jpg) | Phones for Partner, Definity, Merlin, Magix, System 25, System 75, Spirit and... Partner, Partner MLS, Spirit, System 25, Lucent Definity, System 75, AT&T Definity, more... | ![Avaya Partner ACS](http://assets.twacomm.com/assets/3498841907/dept_images/25_sm.jpg) | Partner ACS phone systems by Avaya supporting up to 31 lines and 48 phones. Avaya, Lucent, more... |
![Partner Basic Phone System](http://assets.twacomm.com/assets/3498841907/dept_images/24_sm.jpg) | The smallest Partner phone system. Now discontinued. Replaced by Partner ACS. Partner Basic 206 Processor Module (2x6), Partner Basic Connector Module, 206E Expansion Module (2x6), more... | ![Partner Plus Phone System](http://assets.twacomm.com/assets/3498841907/dept_images/28_sm.jpg) | Partner phone system expandable up to 5 modules. Now discontinued. Replaced... Partner Plus Control Unit, Partner Plus - Partner II Cabinet, 400E Expansion Module (4x0), more... |
![Partner II Phone System](http://assets.twacomm.com/assets/3498841907/dept_images/23_sm.jpg) | Partner phone system expandable up to 10 modules. Now discontinued. Replaced... Partner II Expansion Processor without Cabinet (R4.1), 400EC Expansion Module with Caller ID (4x0), more... | ![Definity Phone Systems](http://assets.twacomm.com/assets/3498841907/dept_images/234_sm.jpg) | Large corporate phone systems. Require professional installation. Avaya, Lucent, more... |
![AT&T Spirit Phone System](http://assets.twacomm.com/assets/3498841907/dept_images/115_sm.jpg) | Spirit 308, 1224 & 2448 phone systems. Spirit 308 Control Unit, Spirit 308 Expansion Module, Spirit 1224 Control Unit, more... | ![Partner Endeavor Phone System](http://assets.twacomm.com/assets/3498841907/dept_images/22_sm.jpg) | This system was discontinued by Avaya. The Partner ACS is the current replacement. Avaya, Lucent, more... |