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call or line appearances
The phone included LEDs that let you know the status of each line programmed into the phone
36 synchronous serial ports
The 4200773L3 provides two RS-449 synchronous serial ports
Adtran Atlas 800 Plus Router AC 1200226L1 Handsets call or line appearancesAdtran Atlas 800 Plus Router AC 1200226L1 Description: Adtran Atlas 800 Plus Chassis AC 1200226L1 product information. 1200226L1: ATLAS is a modular, highly scalable integrated access system that has far reaching application in today's advanced telecommunications environments. The system supports voice, data and video applications at up to T3 rates over dedicated and switched networks. The chassis includes eight expansion slots and a well engineered
