Aastra 57i

Aastra 57i – IP telephone with backlit LCD display with 144x128 pixel resolution, 12 contextual function keys, supporting 9 simultaneous voice connections, two 10/100 Mbps Ethernet ports, DHCP, SNTP, NAT.

The Aastra 57i is an advanced, full-featured IP phone with a huge screen, providing the user with a full range of services, combined with an ergonomic design.

With exceptional features, outstanding technical characteristics and advanced IP telephony functions, the Aastra 57i offers an IP phone that meets modern standards and the ability to expand functionality. Sleek, elegant design, backlit LCD display with a resolution of 1080p, the Aastra 57i supports most modern SoftSwitch and 9 simultaneous voice connections, has XML functionality for access to various business applications from the device. "one-button" push-to-receive mode, as well as XML-oriented applications.

Main characteristics of the IP phone Aastra 57i:

* Aastra 57i is equipped with an XML browser, which allows access to various standard functions and applications from the phone. Any operator can develop internal programs using the documentation provided by Aastra. or server applications that require a screen and keyboard to operate.
* Combined with a large amount of information stored in the phone book, call history, 12 programmable keys, the Aastra 57i demonstrates efficiency in operation due to the user receiving call information by pressing a single button.
* The Aastra 57i IP phone supports up to three Aasta 536 modules, each with 36 keys and LED indicators, allowing you to create a large functional console, or the phone supports up to three extended Aastra 560M modules, each with 60 additional keys, an LCD screen and LED indicators.
* High-quality speakerphone with excellent speech transmission quality – functionality and quality tested over the years and confirmed by its own brand.
* From initial telephony deployment to upgrades and functionality development, the Aastra family of phones is a smart choice for investment protection in both time and money. Receivers make deployment more convenient by allowing power control of the handsets from the Center and easy power backup.

Brief technical characteristics

Nutrition

* AC adapter included
* Built-in IEEE 802.3af Power Over Ethernet (PoE)

Tube / Headsets

* Modular RJ9 headset jack compatible with most headsets
* The handset is compatible with analogues
* High quality speakerphone

Display

* 144x128 graphic LCD display with soft white backlight
* LED call and mailbox message signaling

Additional keys

* 4 control keys
* 4 keys with indicators for selecting lines
* 12 context keys
* 6 programmable keys with indicators
* 8 preset keys to access functions such as: Bye, Settings, Call Hold, Redial, 2x Volume, Speaker/Headset, Mute

Networking capabilities

* Two 10/100 Mbps Ethernet ports
* Manual or automatic (DHCP) assignment of IP addresses
* Time synchronization via SNTP
* IEEE 802.1p/Q VLAN QoS and Priority, TOS and DiffServ
* NAT
* Built-in HTTP for management and configuration
* DNS-SRV support or local BackUp server
* Possibility to use configuration files

Protocols / Codecs

* IETF SIP (RFC3261)
* G.711 u-law / A-law
* G.729

Main advantages (functionality available depending on IP system)

* Notebook
* Call transfer
* Call forwarding
* Standby mode
* Information about the calling subscriber
* Call history
* Conference
* List of dialed numbers
* One-click call