Aastra 675i Expansion Module 560M Headset The phone is dual mode

The phone is dual mode

The IP5130-SDL features up to 9 lines and 20 programmable buttons

An amplifier is required for the H series headsets because they provide functionality such as volume adjustments and more

The 4242924L3 part number designates that the Adtran Total Access 924e has built in VPN support

the basic complement of 16 programmable keys can be increased to 38 or 60 keys for additional lines or access to powerful Meridian 1 features

Aastra 675i Expansion Module 560M Headset The phone is dual modeAastra 675i Expansion Module 560M Description: The Aastra 675i expansion module provides support for additional programmable keys in an Aastra 675xi series IP phone. An additional 20 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 675i module is