Aastra 51i IP Telephones
Exceptional Features and Value in a Basic Level IP Telephone
The Aastra 51i offers features and flexibility in an open-standards
based, carrier grade basic level IP telephone. With a sleek and elegant
design and LCD display the 51i is fully interoperable with leading IP
Telephony platforms, offering advanced XML capability to access custom
applications and support for high-quality SIP communications.
Part of the 5i Series of IP telephones, the 51i is ideally suited for light
use small and medium business applications such as lobbies, common
areas or individual user environments where single line high-quality SIP
communication is required.
Key Features and Benefits: Feature Highlights*
» 1 call appearance
» XML Browser » Shared call and bridged line
The Aastra 51i is equipped with XML browser capabilities allowing access to appearances
customized services and applications. Create internal service applications using » Distinctive ringing, priority alerting
development guides available from Aastra. This feature provides unlimited » XML browser
potential to customize the 51i to meet your specific business needs or vertical » Personal directory
applications using the display keypad. » Call forward, Call transfer, Call
waiting
» Caller and calling line information
» Enhanced Call Management » Callers log
With extensive storage capacity for personal directory, callers log, and redial list, » Intercom reception with auto-
the Aastra 51i can improve efficiency by providing more call information with answer
the push of a button. Features such as shared call and bridged line appearances, » Redial list
call forward, call transfer and call waiting increase call flexibility and control. » Do Not Disturb
» Live dial pad support
» Supports Busy Lamp Field (BLF)
» Remarkable Audio
monitoring by other end points*
All Aastra IP telephones offer full duplex speakerphone with excellent voice » Digium’s Asterisk – Bridged Line
clarity and delivery. With years of experience in telecommunications and Appearances (BLA), Intercom
telephone design, Aastra can ensure superior voice quality on every product » Broadsoft’s BroadWorks Enhanced
we sell. SIP – supports Shared Call
Appearances, CommPilot Call
Manager, Call Park/Pickup, Priority
» Simplified Deployment Alerting
From initial deployment and configuration to future enhancements and » Nortel’s MCS 5100/5200 SIP support
upgrades, the Aastra family of IP telephones are designed to save your business – Voicemail, and NAT Traversal
time and money. Dual auto-sensing switched Ethernet ports eliminate support
additional wiring and simplify installations. Integrated IEEE 802.3af Power- » Sylantro’s SIP–B support - Last
over-Ethernet allows easy deployment with centralized powering and backup. Call return, Warn line and Hot Line,
Easily created configuration files, using any text editor, can be used to configure Distinctive ringing, Call Park/Pickup,
and Centralized Conferencing
phones individually or centrally
among others
* Feature availability dependant on IP telephony systems
Your Connection to the World

Aastra 51i Technical Specifications www.aastratelecom.com
Physical Security
» 20.8 cm W x 23.5 cm D x 8.0 cm H (8.2”W » User and administrator level passwords
x 9.3”D x 3.2”H) » Encryption of configuration files
» 889g (31.3 oz) » HTTPS configuration download and web
» 4 positions footstand management
» Wall mountable » Phone lock with PIN
» TLS and SRTP*
Power
» Integrated IEEE 802.3af Power Over Networking
Ethernet (PoE) support » Dual 10/100 Mbps switched Ethernet
» AC wall adapter (sold separately) ports » Optional midspan Power Over Ethernet
» Manual or Dynamic Host Configuration (POE) injector available, but not
Audio Protocol (DHCP) IP address setup provided, for networks that do not
» Hearing aid compatible (HAC) handset » Time and date synchronization using supply power
» Full-duplex quality speakerphone SNTP • D0023-0031-00-00 (North America)
» Quality of Service (QOS) support • D0023-0031-PS-00 (Universal)
Display and Indicator – IEEE 802.1 p/Q VLAN and priority
» 3 line LCD display Package Contents
tagging, Type of Services (TOS), and
» LED for call and message waiting » Aastra 51i IP telephone
Differentiated Services Code Point
indicator » Handset and coil cord
» Network Address Translation (NAT)
» 2x Footstand
support
Feature Keys » Ethernet cable
» Integrated HTTP/HTTPS server for
» 1 call appearance » Quick reference speedial label
web administration and maintenance
» 4 navigational keys » Wall Drilling template, screws and
including a built-in troubleshooting
» 9 configurable speed-dial keys using anchors
section
number keypad » Installation Guide
» Mass deployment via central
» 9 predefined hard keys, plus 2 volume provisioning of user configuration files
keys:
Regulatory
– TFTP, FTP, HTTP, HTTPS
• Goodbye CE
» Redundant server support
• Services • DNS-SRV » ROHS compliant
• Hold • Local backup registrar and/or proxy » WEEE (2002/96/EC)
• Redial server
» CE Mark (89/336/EEC EMC Directive and
• Save 73/23/EEC Low Voltage Directive)
• Delete Interoperability
• Swap EMC
» 5xi series common interoperability
• Speakerphone certifications. See latest software release » FCC Part 15 Class B
• Mute notes for up to date information » ICES-003 Class B
» AS/NZS 3548 Class B
Protocols / Codecs Part Numbers » EN55022 Class B
» IETF SIP (RFC3261) and associated RFC » A1751-0131-10-01 – 51i Phone with » CISPR22 Class B
drafts English Text Keypad, Includes English » EN55024
» G.711 -law / A-law Install Guide » EN61000-4-2, 4-3, 4-4, 4-5, 4-6, 4-8, 4-11
» G.729 » A1751-0131-10-55 – 51i Phone with
Safety
International Symbols Keypad, Includes
Localization Multi-language install Guides » CAN/CSA C22.2 No. 60950
» Multi-lingual support – English, French, » EN 60950
Spanish, Italian, German Accessories » UL 60950-1
• Downloadable language pack » AC adapters, sold separately
support for customization and • D0023-0041-01-00 (North American Telecom
additional language translations AC adapter) » FCC Part 68 (Hearing Aid Compatibility)
» Country-specific call progress tones and • D0023-1051-00-75 (Universal AC
cadences adapter) * Feature availability dependant on IP telephony systems
Rev 07/07
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TO CHANGE WITHOUT NOTICE. AASTRA TELECOM ASSUMES NO RESPONSIBILITY FOR ANY ERRORS THAT MAY APPEAR 155 SNOW BLVD.,
IN THIS DOCUMENT. PRODUCT CAPABILITIES DESCRIBED IN THIS DOCUMENT PERTAIN SOLELY TO AASTRA TELECOM’S CONCORD, ONTARIO, CANADA, L4K 4N9
MARKETING ACTIVITIES IN THE U.S AND CANADA. AVAILABILITY IN OTHER MARKETS MAY VARY. SALES@AASTRA.COM • WWW.AASTRATELECOM.COM