Exceptional Features and Value in a Featured IP Telephone
The 53i from Aastra offers powerful features and flexibility in a standards based, carrier-grade basic level IP telephone. With a sleek and elegant design and 3 line LCD display, the 53i is fully interoperable with leading IP Telephony platforms, offering advanced XML capability to access custom applications and support for up to 9 calls simultaneously. Part of the Aastra family of IP telephones, the 53i is ideally suited for light to regular telephone requirements.

• XML Browser
  The Aastra 53i is equipped with XML browser capabilities allowing access to customized services and applications. Create internal service applications using development guides available from Aastra. This feature provides unlimited potential to customize the Aastra 53i to meet your specific business needs or vertical applications using the display and keypad.
  
  
• Enhanced Call Management
  With extensive storage capacity for personal directories, callers logs and redial lists, the Aastra 53i can improve efficiency by providing more call information with the push of a button. Features such as shared call and bridged line appearances, call forward, call transfer, call waiting, intercom and local 3-way conference increase call flexibility and control.
  
  
• Remarkable Audio
  All Aastra IP telephones offer full-duplex speakerphone with excellent voice clarity and delivery. With years of experience in telecommunications and telephone design, Aastra can ensure superior voice quality on every product we sell.
  
  
• Simplified Deployment
  From initial deployment and configuration to future enhancements and upgrades, the Aastra family of IP telephones are designed to save your business time and money. Dual auto-sensing switched Ethernet ports eliminate additional wiring and simplify installations. Integrated IEEE 802.3af Power-over-Ethernet allows easy deployment with centralized powering and backup. Easily created configuration files, using any text editor, can be used to configure phones individually or centrally.

Physical	23.5 cm W x 20.8 cm D x 8.0 cm H (9.3”W x 8.2”D x 3.2”H) 895 g (31.3 oz) 4 positions footstand Wall mountable
Power	AC wall adapter included Integrated IEEE 802.3af Power Over Ethernet (PoE) support
Audio	Hearing aid compatible (HAC) handset Full-duplex quality speakerphone Modular headset connector with builtin amplifier - Non-amplified business headsets are recommended
Display and Indicator	3 line LCD display LED for call and message waiting indicator
Feature Keys	3 call appearance lines with LEDs 4 navigational keys 4 programmable keys with LEDs 8 predefined hard keys - Goodbye - Options - Hold - Redial - Speakerphone/Headset toggle - Mute - 2 volume keys
Protocols / Codecs	IETF SIP (RFC3261 and associated RFCs) G.711 μ-law / A-law G.729
Localization	Multi-lingual support – English, French, Spanish, Italian, German Downloadable language pack support for customization and additional language translations Country-specific call progress tones and cadences
Security	User and administrator level passwords Encryption of configuration files HTTPS configuration download and web management Phone lock with PIN
Networking	Dual 10/100 Mbps switched Ethernet ports Manual or Dynamic Host Configuration Protocol (DHCP) IP address setup Time and date synchronization using SNTP Quality of Service (QOS) support – IEEE 802.1 p/Q VLAN and priority tagging, Type of Services (TOS), and Differentiated Services Code Point Network Address Translation (NAT) support Integrated HTTP/HTTPS server for web administration and maintenance including a built-in troubleshooting section Mass deployment via central provisioning of user configuration files – TFTP, FTP, HTTP, HTTPS Redundant server support: - DNS-SRV - Local backup registrar and/or proxy server
Interoperability	Visit www.aastratelecom.com/IPphones for an up to date listing of approved vendor/interoperability
Part Numbers	A1753-0131-10-05 – North America (120V power adapter) A1753-0131-10-55 – International (Universal power adapter)
Optional Accessories	Optional midspan Power Over Ethernet (POE) injector available, but not provided, for networks that do not supply power D0023-0031-00-00 (North America) D0023-0031-PS-00 (International)

- Aastra 53i IP telephone
- Handset and coil cord
- 2x Footstand
- AC wall adapter
- Network cable
- Programmable keys label
- Installation Guide
- Wall mount kit

Limited 1-Year Warranty