Aastra 6737i (37i)
Buy now: £182.00 + VAT

Quick Overview

The Aastra 6737i (37i) has 2 Gigabit Ethernet ports to ensure that attached computers perform at their full capabilities when connected to Gigabit networks


The Aastra 6737i supports up to 9 SIP accounts and has a 144×128 pixels graphical backlit LCD display


The Aastra 6737i requires a POE switch or a Universal AC Power Adapter


The Aastra 6737i (37i) features:

  1. Up to 9 lines with call appearances
  2. 144×128 pixels graphical backlit LCD display; Soft white backlight
  3. LED for call and message waiting indication
  4. 4 line/call appearance buttons with LEDs; 4 navigational keys; 12 customisable softkeys with LEDs; 8 dedicated hard keys including Hold, Redial, Speakerphone/Headset toggle, Mute, Options, Goodbye, 2 volume keys
  5. Hearing aid compatible (HAC) handset; Full-duplex quality speakerphone
  6. Codecs: G.711 μ-law / A-law, G.729, G.722
  7. Independent volume setting for handset/speaker/headset
  8. Echo cancellation; Comfort noise; Packet loss concealment
  9. Modular Headset Connector with built-in amplifier
  10. User and administrator level passwords for login
  11. Encryption of configuration files
  12. HTTPS configurations download and web management
  13. Phone lock with PIN
  14. Digest Authentication
  15. Transport layer Security (TLS); Secure Real-Time Protocol (SRTP)
  16. Multi-lingual support – English, French, Spanish, Italian, German
  17. Country-specific call progress tones and cadences
  18. 23.5 cm W x 20.8 cm D x 8.0 cm H (9.3”Wx 8.2”D x 3.2”H)
  19. 4 position footstand; Wall mountable



A phone set ideally suited for modern high-speed network, Aastra 6737i is a feature rich phone that offers flexibility of use. Aastra 6737i comes with great HD audio and network support. The audio software, integrating wideband and the hardware of the Aastra 6737i ensures great voice quality



It is easy to access customised services and applications through the built in Aastra 6737i XML browser and the extra large display. The Aastra 6737i is equipped with XML browser capabilities. The user can create internal service applications using the development guides available from Aastra. Each user can customise the phone according to their needs and preferences



Call management becomes easy and efficient with features like call forward, call waiting, call transfer, 3-way conferencing and shared call and bridged line appearances



The Aastra 6737i can be expanded using the M670i or M675i expansion modules. Three expansion modules can be connected to one phone set at the same time. It provides optimal service and assistance in call management



With the dual auto-sensing Gigabit switch Ethernet ports, it is easy to setup and deploy the Aastra 6737i. Power provision can be centralised due to the integrated IEEE 802.3af Power-over-Ethernet



The Aastra 6737i is a high level phone especially designed for users that demand a lot from their phone. With a large 144 x 128 pixel graphical backlit LCD display, 12 programmable softkeys offering up to 30 functions, and supporting up to 9 simultaneous calls, the 6737i is ideally suited for heavy telephone users. It provides one touch solution for most of the day-to-day phone functions



Additional Information


12 Months Warranty




144×128 Backlit LCD

WiFi Support



Ethernet (RJ-45)

Ethernet Port Speed


Number Of Ethernet Ports


Ethernet Cable Included



AC or PoE

AC PSU Included


Number Of Programmable Keys


SIP Accounts/IDs


Expansion Keypad Available

Aastra 560M (M675i) OR Aastra 536M (M670i)



USB Port


HD Voice Technology


Headset Interface

RJ-9 Port

Electronic Hook Switch Support


Handsfree Speakerphone


Skype Support


Microsoft OCS/Lync Support


Presence Indicator