The 53i from Aastra offers powerful features and flexibility in a standards based, carrier-grade basic level IP telephone. With a sleek and elegant design and 3 line LCD display, the 53i is fully interoperable with leading IP Telephony platforms, offering advanced XML capability to access custom applications and support for up to 9 calls simultaneously. Part of the Aastra family of IP telephones, the 53i is ideally suited for light to regular telephone requirements.

• Product Features
• XML Browser
  The Aastra 53i is equipped with XML browser capabilities allowing access to customized services and applications. Create internal service applications using development guides available from Aastra. This feature provides unlimited potential to customize the Aastra 53i to meet your specific business needs or vertical applications using the display and keypad.
  
  
• Enhanced Call Management
  With extensive storage capacity for personal directories, callers logs and redial lists, the Aastra 53i can improve efficiency by providing more call information with the push of a button. Features such as shared call and bridged line appearances, call forward, call transfer, call waiting, intercom and local 3-way conference increase call flexibility and control.
  
  
• Remarkable Audio
  All Aastra IP telephones offer full-duplex speakerphone with excellent voice clarity and delivery. With years of experience in telecommunications and telephone design, Aastra can ensure superior voice quality on every product we sell.
  
  
• Simplified Deployment
  From initial deployment and configuration to future enhancements and upgrades, the Aastra family of IP telephones are designed to save your business time and money. Dual auto-sensing switched Ethernet ports eliminate additional wiring and simplify installations. Integrated IEEE 802.3af Power-over-Ethernet allows easy deployment with centralized powering and backup. Easily created configuration files, using any text editor, can be used to configure phones individually or centrally.

• Product Highlights
• Up to 9 call appearance lines
• Shared call and bridged line appearances
• Multi-proxy support
• Distinctive ringing, priority alerting
• XML browser
• Personal directory
• Call forward/Call transfer/Call waiting
• Caller and calling line information
• Callers log
• Local 3-way conference
• Intercom with auto-answer
• Redial list
• Do Not Disturb
• Live dial pad or pre-dial support
• Digium’s Asterisk Business Edition – supports Busy Lamp Field (BLF), Bridged Line Appearances (BLA), Intercom
• BroadSoft’s BroadWorks enhanced SIP – supports Shared Call Appearances, Busy Lamp Field (BLF), CommPilot Call Manager
• Nortel’s MCS 5100/5200 SIP supports Conferencing, Voicemail, and NAT Traversal
• Sylantro’s SIP – supports Bridged Line Appearances (BLA), ComÑierge, Call Park/Pickup, Conference

• Product Technical Specifications
• Aastra 53i Power
  • AC wall adapter included
  • Integrated IEEE 802.3af Power Over Ethernet (PoE) support
• Aastra 53i Audio
  • Hearing aid compatible (HAC) handset
  • Full-duplex quality speakerphone
  • Modular headset connector with built-in amplifier (Non-amplified business headsets are recommended)
• Aastra 53i Display and Indicator
  • 3 line LCD display
  • LED for call and message waiting indicator
• Aastra 53i Feature Keys
  • IETF SIP (RFC3261 and associated RFCs)
  • G.711 μ-law / A-law
  • G.729
  • Dual 10/100 Mbps switched Ethernet ports
  • 3 call appearance lines with LEDs
  • 4 navigational keys
  • 6 programmable keys with LEDs
  • 8 predefined hard keys:
     
    • Goodbye
    • Options
    • Hold
    • Redial
    • Speakerphone/Headset toggle
    • Mute
    • 2 volume key

• Package contents
• Aastra 53i IP telephone
• Handset and coil cord
• 2x Footstand
• AC wall adapter
• Network cable
• Programmable keys label
• Installation Guide
• Wall mount kit