The Aastra 6737i (37i) features:

Up to 9 lines with call appearances
144x128 pixels graphical backlit LCD display; Soft white backlight
LED for call and message waiting indication
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
Hearing aid compatible (HAC) handset; Full-duplex quality speakerphone
Codecs: G.711 μ-law / A-law, G.729, G.722
Independent volume setting for handset/speaker/headset
Echo cancellation; Comfort noise; Packet loss concealment
Modular Headset Connector with built-in amplifier
User and administrator level passwords for login
Encryption of configuration files
HTTPS configurations download and web management
Phone lock with PIN
Digest Authentication
Transport layer Security (TLS); Secure Real-Time Protocol (SRTP)
Multi-lingual support – English, French, Spanish, Italian, German
Country-specific call progress tones and cadences
23.5 cm W x 20.8 cm D x 8.0 cm H (9.3”Wx 8.2”D x 3.2”H)
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