Aastra M670i Expansion Module 536M

Aastra M670i Expansion Module 536M Description: The Aastra M670i expansion module provides support for additional programmable keys in an Aastra 675xi series IP phone. An additional 36 programmable keys are provided to a phone, and up to three expansion modules can be connected to a phone. Each button has a LED status indicator that can alert users to the status of lines or extensions in a busy lamp field (BLF) configuration. The Aastra M670i module is also known as the Aastra 536M module. Aastra M670i Features: Provides 36 Programmable Keys Up to three expansion modules can be connected to a single phone LED Status Indicators Works with 6753i, 6755i, 6757i, and 6739i IP phones Included: M670i / 536M Expansion Module Stand Connecting Cable Connecting Plate