Aastra 53i


Provider Compatibility


Firmware Stability


Industry Support



  • SIP Compatible
  • Programmable Buttons
  • Simple Operation


  • Low Angle Stand
  • No Touchscreen
  • Limited Ring Tones
Grade A – average saving against RRP = 73%
Grade B – average saving against RRP = 80%

*See below for review criteria explanation.

Current Listings:


 The Aastra 53i (6753i) is a versatile IP telephone – standard telephony features, LCD display screen and programmable function/feature buttons make this a nice entry level handset for use on SIP or hosted systems. Designed to be compatible with the Aastra range of telephone systems, these can also be used as a SIP endpoint.
Manufacturer’s Part No. Aastra A1753-0131-10-01
Follow this link for further information: Docs

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  • 3 line LCD display (3 Lines x 16 Characters)
  • Dual Ethernet ports (10/100 Mbps) with PoE support
  • Full duplex speakerphone
  • XML and CTI support
  • Local 3 way conference
  • Message waiting indicator
  • Personal directory
  • 4 Navigational keys | 8 Programmable keys | 10 Fixed function keys
  • Intercom with auto answer
  • Wideband audio support
  • Multi-proxy support

What our review criteria mean:

Provider Compatibility

This reflects the telephone’s ability to be used on different brands of system or hosted solution.

Firmware Stability

How well we think the firmware of the telephone performs in reality – is it glitchy or smooth running.

Industry Support

This gives you an idea of the availability for support, documentation, software/firmware updates, etc.