Aastra 5i Series Expansion Modules Offer increased Call Control

• Scalable to 3 expansion modules per phone
• Power direct from phone
• No external power adapter required
• Programmable features
• Line, speed-dial, BLF, BLA, SCA, DND
• 36-keys with LED
• Paper strip labeling
• Supported on 55i, 57i, 57i CT

• Flexible Features
  The 536M is equipped with LED status indicators and supports a variety of programmable features including Line, Speed Dial, Busy Lamp Field, Bridged Line Appearance, Shared Call Appearance and Do Not Disturb.
  
  
• Simplified Deployment
  Sharing both power and signaling with the 5i Series phone, the 536M can be easily added without additional installation or wiring expense. Simplified configuration via WebUI or configuration file from the phone.
  
  
• Expandability
  Up to three 536M modules can be used with the 5i Series models 55i, 57i or 57i CT, offering up to 108 additional keys. Growing businesses can start with a single module and add more as their needs increase.