Aastra 53i – IP phone that fully supports XML display and control mode, and is capable of supporting up to 9 simultaneous conversations; two 10/100 Mbps Ethernet ports, DHCP, SNTP, NAT, DNS-SRV.

Aastra 53i is a basic model of the 5Xi IP phone series. The IP Phone fully supports the display and control mode using XML, and is also capable of simultaneously supporting up to 9 conversations. The Aastra 53i IP phone with a 3-line LCD display is a budget solution for different segments of VoIP users.
Main characteristics of the IP phone Aastra 53i:

XML Browser
The Aastra 53i is equipped with an XML browser, allowing access to various user functions and applications from the phone. Any operator can develop internal programs using documentation supplied by Aastra. This capability allows for a potentially infinite expansion of the phone's functionality for business applications or server applications that require a screen and keyboard to operate.
Advanced Call Control
Together with the large storage capacity of the phone book and call history, the Aastra 53i demonstrates its efficiency in operation, thanks to the user receiving call information at the touch of a single button.
Quality of language
High-quality speakerphone with excellent speech transmission quality – functionality and quality tested over the years and confirmed by its own brand.
Easy to maintain
Investment protection - Ability to upgrade software on-site and develop business applications

Technical characteristics of the IP phone Aastra 53i:

Physical

20.8 cm Width x 23.5 cm Depth x 8.0 cm Height
895 g

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

3-line display with backlight
LED call and mailbox message signaling

Additional keys

4 control keys
3 keys with indicators for selecting lines
6 programmable keys
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 of using configuration files

Protocols / Codecs

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

Key Benefits *

Notes
Call transfer
Call transfer
Standby mode
Information about the subscriber and the callee
Call history
Conference
List of dialed numbers
One-click call

*Functionality available depending on IP system

Technical characteristics of Aastra 53i :
Number of lines Number of Ethernet ports Headset jack Connection of additional consoles SIP support IAX support H.323 support SCCP support MGCP support PoE availability
2-4 2 yes no Yes No No No No No Yes