PDF User Manual

Aastra 53i

IP Telephones

 Your Connection to the World

 Key Features and Benefits: 

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 53i to meet your specifi c 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 effi ciency 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 fl exibility 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 confi guration 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 confi guration fi les, using any text 
editor, can be used to confi gure phones individually or centrally.

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Exceptional Features and Value in a Featured IP Telephone

The Aastra 53i 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 5i Series of IP telephones, the 53i is ideally suited for 
light to regular telephone requirements. 

Feature Highlights*

Up to 9 call appearance lines

Shared Call and Bridged Line 

Appearances

Multi-proxy support

Distinctive ringing, priority alerting

XML browser

Personal directory

Call forward/Call transfer/Call 
waiting

Caller and calling line information

Callers log

Local 3-way conference

Intercom with auto-answer

Redial list

Do Not Disturb

Live dial pad or pre-dial support

Digium’s Asterisk Business Edition 

– supports Busy Lamp Field (BLF),  

Intercom

BroadSoft’s BroadWorks enhanced 

SIP – supports Shared Call 

Appearances, Busy Lamp Field (BLF), 

CommPilot Call Manager

Nortel’s MCS 5100/5200 SIP 
supports Conferencing, Voicemail, 
and NAT Traversal

Sylantro’s SIP – supports Bridged 

Line Appearances (BLA), ComСierge, 
Call Park/Pickup, Conference

* Feature availability dependant on IP telephony systems

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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 built-
in 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

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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)

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)

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Package Contents

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

Regulatory

CE

 ROHS  compliant
 WEEE  (2002/96/EC)
 CE Mark (89/336/EEC EMC Directive and 
73/23/EEC Low Voltage Directive)

EMC

 FCC Part 15 Class B
 ICES-003 Class B
 VCCI Class B
 AS/NZS 3548 Class B
 EN55022 Class B
 CISPR22 Class B
 EN55024
 EN61000-4-2, 4-3, 4-4, 4-5, 4-6, 4-8, 4-11

Safety 

 CAN/CSA C22.2 No. 60950
 EN  60950
 UL  60950-1

Telecom

 FCC Part 68 (Hearing Aid Compatibility)
 AS/NZS  S004

RF

 FCC Part 15 Class C
EN 300-328
 EN 301 489
 AS/NZS  4771

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COPYRIGHT (C) 2007 AASTRA TECHNOLOGIES LTD. ALL RIGHTS RESERVED. INFORMATION IN THIS DOCUMENT IS SUBJECT 
TO CHANGE WITHOUT NOTICE. AASTRA TELECOM ASSUMES NO RESPONSIBILITY FOR ANY ERRORS THAT MAY APPEAR 
IN THIS DOCUMENT. PRODUCT CAPABILITIES DESCRIBED IN THIS DOCUMENT PERTAIN SOLELY TO AASTRA TELECOM’S 
MARKETING ACTIVITIES IN THE U.S AND CANADA. AVAILABILITY IN OTHER MARKETS MAY VARY.

AASTRA TELECOM
155 SNOW BLVD.,
CONCORD, ONTARIO, CANADA, L4K 4N9
SALES@AASTRA.COM  •  WWW.AASTRATELECOM.COM

Rev 07/07

Aastra 53i Technical Specifications

www.aastratelecom.com