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Aastra 51I Ip Phone Installation Guide

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User reviews and opinions

Comments to date: 11. Page 1 of 1. Average Rating:
fichte.buche 5:53am on Monday, October 4th, 2010 
An amazing phone. In the start it looks like it is difficult to handle, first by price and then by functions. I have had the Iphone(Edge) since it came out and find it so suprising that all these people sing its praises.
jbfloyd 1:11am on Friday, October 1st, 2010 
Apple is making millions on a great idea but ...  I like the internet, I like videoing and taking pictures and being able to email them. I bought this phone and a MacBook thinking th...  Screen size, Apps, voice quality No bluetooth communication with Mac computers
ohadninio 7:37am on Tuesday, September 28th, 2010 
Took me a few days of googling to hack this phone to work with t-mobile. It comes with 1.1.1 OS out of the box now. So I downgraded to 1. The iphone is a nice phone, but not great. AT&T and Apple lock this phone down which is not right since we spend so much on it.
sridharpandu 1:06pm on Saturday, July 17th, 2010 
Good to have spares I find these pry tools are invaluable for dismantling small electronic devices. Knock-off earbuds I only paid 3$ for mine, but they are knock-offs and not the real Apple earbuds. The sound in them stinks.
ls_junior 10:24am on Friday, July 16th, 2010 
This is no longer necessary to pipe music to receive telephone, Internet connection their new Apple iPhone . With the iPhone. iPhone From Wikipedia, the free encyclopedia (Redirected from Apple iPhone) Jump to: navigation.
g1annis 5:08am on Thursday, June 3rd, 2010 
I bought the iphone because it is "idiot proof". Being of an older generation and not too tech savvy this phone was a breeze. Nice to handle, 4GB Storage Price, camera quality
alfrng 4:53pm on Friday, May 7th, 2010 
When there is no 3G HSDPA compatibility; no wireless iTunes connectivity or downloads; no external memory card slot; no stereo Bluetooth so why would ... I love my new iphone, it was very easy to sync with itunes - both music and contacts, very intuitive to learn how to do things.
vmatoso 1:20pm on Sunday, April 11th, 2010 
Earphones Although the earphones work fine, one of them lost the metal outside cover within a week. Also one of the cords (right and left). Apple Earphones They are the Apple earphones. Exactly what you expect. The mic and button work with the iPhone 3G, but not the volume buttons.
Master600e 10:50pm on Sunday, April 4th, 2010 
Since using mobile me my life has become more organized and easy. I was an initial adopter of mobileme when it had problems. However, those have been ironed out and the product works as advertised.
sathyanr 12:41pm on Sunday, April 4th, 2010 
Hubby has a new toy , the Apple Iphone 8 g (gigabytes). It measures 2 1/2 x 4 1/2 and 3/8" thick. His case was $39.00. Amazing combination of phone/music player/video player WHEN IT WORKS! Screen suddenly dies or freezes during task. Firmware update may kill it!
Giesen2 8:50am on Monday, March 29th, 2010 
It would be great, I agree, if the world worked from the MAC platform. it is a good phone i like it , i would recommend it to anybody

Comments posted on are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.




51i IP Phone

Installation Guide

41-001211-00 Rev 00

odb ye

vic es

Sav e De Sw ap

Spe ake r

Software License Agreement
Aastra Telecom Inc., hereinafter known as "Seller", grants to Customer a personal, worldwide, non-transferable, non-sublicenseable and non-exclusive, restricted use license to use Software in object form solely with the Equipment for which the Software was intended. This Product may integrate programs, licensed to Aastra by third party Suppliers, for distribution under the terms of this agreement. These programs are confidential and proprietary, and are protected as such by copyright law as unpublished works and by international treaties to the fullest extent under the applicable law of the jurisdiction of the Customer. In addition, these confidential and proprietary programs are works conforming to the requirements of Section 401 of title 17 of the United States Code. Customer shall not disclose to any third party such confidential and proprietary programs and information and shall not export licensed Software to any country except in accordance with United States Export laws and restrictions. Customer agrees to not reverse engineer, decompile, disassemble or display Software furnished in object code form. Customer shall not modify, copy, reproduce, distribute, transcribe, translate or reduce to electronic medium or machine readable form or language, derive source code without the express written consent of the Seller and its Suppliers, or disseminate or otherwise disclose the Software to third parties. All Software furnished hereunder (whether or not part of firmware), including all copies thereof, are and shall remain the property of Seller and its Suppliers and are subject to the terms and conditions of this agreement. All rights reserved. Customer's use of this software shall be deemed to reflect Customer's agreement to abide by the terms and conditions contained herein. Removal or modification of trademarks, copyright notices, logos, etc., or the use of Software on any Equipment other than that for which it is intended, or any other material breach of this Agreement, shall automatically terminate this license. If this Agreement is terminated for breach, Customer shall immediately discontinue use and destroy or return to Seller all licensed software and other confidential or proprietary information of Seller. In no event shall Seller or its suppliers or licensors be liable for any damages whatsoever (including without limitation, damages for loss of business profits, business interruption, loss of business information, other pecuniary loss, or consequential damages) arising out of the use of or inability to use the software, even if Seller has been advised of the possibility of such damages.
Model 51i IP Phone Installation Guide iii

Table of Contents

Software License Agreement... iii Introduction....1 Phone Features... 1 Requirements.. 1 About This Guide.. 2 Phone Parts... 3 Key Panel....4 Key Description....5 Installation and Setup...7 Direct or Shared Network Connection.. 7 Connecting to the Network and to Power.. 9 Power Adapter... 9 Connecting a Handset.. 11 Desk or Wall Installation... 12 Customizing your phone...14 Accessing Your Options via the Phone UI. 14 Accessing Your Options via the Aastra Web UI.. 15 Other Phone Features...20 Adjusting the Volume... 20 Status Lights (LEDs).. 20 Call Timer... 20 Troubleshooting Solutions...21 Limited Warranty....23


Congratulations on your purchase of the Model 51i IP Phone! The 51i communicates over an IP Network, allowing you to receive and place calls in the same manner as a regular business telephone. The 51i is capable of supporting the SIP protocol.

Phone Features

3-line LCD screen 1 call appearance line Supports 1 call line with transfer capabilities Full-duplex speakerphone for monitoring calls Built-in two-port, 10/100 Ethernet ports - lets you share a connection with your computer Inline power support (based on 802.3af standard) which eliminates power adapters. AC power adapter (sold separately)


SIP-based IP PBX system or network installed and running with a SIP account created for the 51i phone. Access to a Trivial File Transfer Protocol (TFTP), File Transfer Protocol (FTP), Hypertext Transfer Protocol (HTTP) server, or Hyper Text Transfer Protocol over Secure Sockets Layer (SSL) (HTTPS). 802.3af Ethernet/Fast Ethernet LAN Category 5/5e straight through cabling Power over Ethernet (PoE) inline power injector (optional accessory necessary only if your network provides no inline power and if you do not use the IP Phones power adapter).
Model 51i IP Phone Installation Guide 1

About This Guide

This manual describes how to physically set up your new 51i. Not all features listed are available by default and some may depend on your phone system or service provider. Contact your system administrator if you have any questions on what features and services are available to you on your system. This guide complements the SIP IP Phone Aastra 51i, 53i, 55i, 57i, 57i CT Administrator Guide and the Aastra Model 51i User Guide. SIP IP Phone Aastra 51i, 53i, 55i, 57i, 57i CT Administrator Guide is designed for network administrators, system administrators, developers and partners who need information on installing this product on an IP network. Aastra Model 51i User Guide explains the most commonly used IP telephone features for an end user. These guides along with release notes, system updates, etc. can be downloaded from our Web site at

Model 51i IP Phone Installation Guide

Phone Parts

When you unpack your phone, you should ensure that you have all of the following items. If any part is missing, contact the supplier of your phone.

Handset Cord

Wall Mount Drilling Template

asdassa asdadsda



Quick Reference Card
Screws and Anchors for Wall Mounting Telephone Base Desk Legs Ethernet Cable 51i Installation Guide
Optional Accessories (Not Included)

Power Adapter

PoE (Power over Ethernet) Inline Power Injector
Additional Ethernet Cable (category 5/5e straight through cable)
A PoE (Power over Ethernet) inline power injector supplies 48v power to the 51i through the Ethernet Cable on pins 4 & 5 and 7 & 8. Warning: Do not use this PoE inline power injector to power other devices. Model 51i IP Phone Installation Guide 3

Key Panel

High quality speakerphone HAC handset






Goodbye key Services key Hold key Redial Key Volume control Navigational keys 3-line LCD screen Message waiting lamp Keypad Speakerphone Mute key Save/Delete/Swap Keys

Key Description*

Key Description Goodbye key - Ends an active call. The Goodbye key also exits an open list, such as the Options List, without saving changes. Services key - Accesses services and options to customize your phone. Your System Administrator may have already customized some of your settings. Check with your System Administrator before changing the administrator-only options. Hold key - Places an active call on hold. To retrieve a held call, press the Hold key again.

Servi es vices

Hold old
Redial key - Redials up to 100 previously dialed numbers. Pressing the Redial key twice simultaneously redials the last dialed number. Volume control key - Adjusts the volume for the handset, ringer, and handsfree speaker. See "Adjusting the Volume" on page 20 for more information.
Save key - Saves names and numbers to the Directory List. Also saves names and numbers from the Callers List to the Directory List. Delete key - Deletes individual or all entries from the Directory List and Callers List. Deletes all entries from the Redial List. You can also use this key to backspace and delete a character when entering values for speeddial softkeys. Swap key - If you are on an active call and a second call comes in, you can press the Swap key. This key places the first call on hold and answers the second call. Pressing the Swap key again toggles between the two active calls. Note: The Swap key works with two active calls only. A third call cannot be accepted.

Speaker key - Activates Handsfree for receiving calls without lifting the handset. Can be used on active calls to switch from the handset to handsfree. Mute key - Mutes the microphone so that your caller cannot hear you.
Key Description Navigation keys - Pressing the UP and DOWN arrow keys lets you view different status and text messages on the LCD display (if there is more than 1 line of status/text messages). These buttons also let you scroll through menu selections, such as the Options List. Pressing the LEFT and RIGHT arrow keys lets you view the line/call appearance. While in the Options List, the navigation keys allow you to exit or enter the current option. When you are editing entries on the display, pressing the LEFT arrow key erases the character on the left; pressing the RIGHT arrow key sets the option.
*See the Aastra 51i User Guide for more information about each of these keys.

Installation and Setup

The 51i can be setup to share a network connection with another network device. Power can be provided by the supplied power adapter or by an 802.3af compliant network power source or with a PoE inline power injector (optional accessory). If your System Administrator has already setup your phone, please refer to the 51i User Guide for call handling information or contact your System Administrator.
Direct or Shared Network Connection
The phone can be set up as a direct network connection to the Ethernet wall jack or as a shared network connection as a pass-through if connecting the phone to a computer or another network device.
Direct Network Connection
Located at the top of the phone are two fully switched 10/100 Mbps Ethernet cable ports. The port marked with LAN is used to connect the phone to the network, as well as provide power to your phone (if required). See "Connecting to the Network and to Power" on page 9 for more information.

Power Adapter Connection

Network Jack (if Inline power provided, do not install the power adapter) Separate Network Jack

Ethernet Cable

To Network

Power Adapter (optional)

Other Network Devices
Shared Network Connection
To connect a network device (such as a computer) to the phone, connect an Ethernet Cable into the network port on the top of the phone marked with PC. Plug the other end of the Ethernet cable into the network jack on the network device you are sharing the network connection with.
To Other Network Device Network Jack (if Inline power provided, do not install the power adapter) Ethernet Cables
Connecting to the Network and to Power Power Adapter

Use the power adapter (provided by your System Administrator) with your phone and plug your phone into a power source.

Inline Power Provided

If your network provides 802.3af compliant in-line power, the phone is powered through the network. 1. On the top of your phone, connect the Ethernet cable (provided with your phone) into the network port marked with LAN. 2. Plug the other end of the Ethernet Cable directly into the network jack on the wall.
Ethernet Cable Network Jack (if Inline power provided, do not install the power adapter)
Note: The PC jack on the 51i does not supply inline power onto other network devices. All Ethernet cables used must be minimum category 5/5e straightthrough cables, such as the cable provided with your phone.
Inline Power Not Provided
If your network does not provide 802.3af compliant in-line power, you have to install the power adapter or the PoE inline power supply (optional accessory). 1. On the top of your phone, connect the Ethernet cable (provided with your phone) into the network port marked with LAN. 2. On the PoE power injector, plug the other end of the Ethernet cable into the network jack marked as indicated in the following illustration. 3. On the PoE power injector, connect an additional Ethernet cable into the network port as indicated in the following illustration. 4. Plug the other end of the Ethernet cable into the network jack on the wall. 5. Plug the PoE power injector into a power outlet.
PoE Power injector (if Inline power or the power adapter are not provided) Network Jack Power Outlet

Ethernet Cables

To PoE

To Phone

To Network Jack
Note: You should connect the power supply to a surge protector or power bar. All Ethernet cables used must be minimum category 5/5e straight-through cables, such as the cable provided with your phone.
10 Model 51i IP Phone Installation Guide

Connecting a Handset

Turn the phone over and locate the handset jack marked j. Insert one end of handset cord into the jack until it clicks into place. Then route the handset cord through the groove as shown in the illustration below. Attach the handset to the other end of the handset cord.
Model 51i IP Phone Installation Guide 11
Desk or Wall Installation

Install on the Desk

The desk installation for the 51i IP phone consists of two legs that attach to the back of the phone near the top corners. A total of four different viewing angles allows users to personalize their phone viewing preference. Attach each leg by inserting the tabs on the leg into the slots on the bottom of the phone. There are three pair of leg slots on each corner of the phone; each leg uses two pairs (1&2, or 2&3) giving two leg positions designating different viewing angles. Furthermore, the legs can be reversed which offer two additional viewing angles. For a higher viewing angle, use the second and third slots from the top. For a lower viewing angle, use the first and second slots from the top. Then push the stand towards the phone until it snaps into place.

Three leg slot locations for customizing the height of the desk phone.

20.7 deg. Incline Angle

23.3 deg. Incline Angle

26.6 deg. Incline Angle

30.9 deg. Incline Angle

Total 4 Viewing Angles

12 Model 51i IP Phone Installation Guide

Install on the Wall

The 51i IP phone has two pre-drilled wall mounting holes on the back of the phone. Using the provided wall mount drilling template, locate and mark the position for the mounting screws on the wall. Depending on the wall type, you may need to use wall anchors. Both the screws and wall anchors are included with your phone. Place the wall mount holes on the phone over the screw heads on the wall and pull down to lock the phone in.

Wall Mount Holes

Note: You may wish to purchase a short Ethernet cable from a local supplier for a wall installation. Also, if 802.3af compliant in-line power is not provided on your network, and you are installing the 51i on a wall using a PoE in-line power injector, you may also wish to use an equivalent flat Ethernet cable rather than the one provided.

Customizing your phone

There is a list of configuration options, accessed by pressing the Services
vices key Servi es on the phone. You can access some of these options via the Aastra Web UI also. The following table indicates the options and the method you can use to access these options on your phone.
Phone Option Language Time and Date Time Date Time and Date Formats Time Server Time Zone Daylight Savings Time Ring Tones/Tone Sets Clear Message Waiting Contrast Level Live Dialpad Set Audio Audio Mode Call Forward Number Mode No. of Rings Phone Status Network Status Firmware Version Restart Phone User Password Phone Lock

Access from Phone UI

Access from Aastra Web UI
Accessing Your Options via the Phone UI
vices 1. Press the Services key Servi es on the phone. 2. Select Options from the Services menu.
3. To select an option, use and to scroll through the list, or press the number corresponding to the option. 4. Press the Show softkey, the button, or press the number corresponding to the selection. 5. Use the softkeys to change a selected option. 6. Press the Done softkey at any time to exit the option and save the change. 7. Press the Cancel softkey, the button, or the time to exit without saving changes. 14 Model 51i IP Phone Installation Guide

button at any

Accessing Your Options via the Aastra Web UI
You can use the following procedure to access the phone options using the Aastra Web UI. Aastra Web UI 1. Open your web browser and enter the phones IP address or host name into the address field. If the browser is using HTTP, the following redirect screen displays, followed by the Security Alert window. This process redirects HTTP to use HTTPS for a more secure connection.
2. Click YES to accept the certificate 3. At the prompt, enter your username and password and click. The Network Status window displays for the IP phone you are accessing.
Note: For a user, the default user name is user and the password field is left blank.
The Network Status window displays for the IP phone you are accessing.
4. You can logout of the Aastra Web UI at any time by clicking Log Off. The following categories display in the side menu of the Aastra Web UI: Status, Operation, Basic Settings.


For more information about changing your options using the Aastra Web UI, see the Aastra Model 51i IP Phone User Guide.


Select a language that you would like your phone to use for displaying prompts and menus.
Note: Supported languages may vary depending on configuration. Contact your Network Administrator for list of available languages.

Time and Date

Use these options to set the local time on the phone. Depending upon the configuration, time set here may be overwritten by the time on your phone system. If you are having problems with this, contact your Network Administrator. Time Server Talk to your Network Administrator before making changes to this option. If the Time Server option is enabled, the display shows the IP address where the phone is getting time and date information from on the Network. Whenever the phone starts up, it will automatically attempt to find the Time Server. If the Time Server is not found and unknown to the phone, the IP address will display as, and the time and date in the main screen displays the equivalent of 12:00 am Jan. 1st 2000". If the Time Server option is disabled, the display shows Network Time Disabled. You can set the time and date manually on your phone.
16 Model 51i IP Phone Installation Guide
Set Time This option shows the Network time, if the Time Server option is enabled. It also allows you to set the time manually.
Note: if you set the time manually, the phone will not try to synchronize the time with a timeserver until the next time it is restarted.
Time Format Select a time format for how time displays on your phone (12h or 24h clock). Set Date This option shows the Network date, if the Timeserver option is enabled. It also allows you to enter the date manually.

Note: if you set the date manually, the phone will not synchronize the date with a timeserver until the next time it is restarted.
Date Format Choose from a list of formats for how the date displays on your phone. Time Zone Choose your current time zone. Select your country by scrolling through a list, or by entering the country code (i.e., CA, US), then pick from the time zone list for that country. Daylight Savings This option allows you to specify daylight savings.

Set Ring Tone/Tone Set

Use these options to set the preference of ring tone and call progress tones for your phone. Ring Tone Press the Change softkey to select one of the five ring tones or silent. Use the volume bar to increase or decrease the ringer volume level. Tone Set Press the Change softkey to select one of the seven predefined tone sets for the phone to play country specific call progress tones such as dial tone, ringing tone, busy tone, congestion tone, call waiting tone, and ringing cadence.

Clear Message Waiting

To clear the Message Waiting Light, select the Clear softkey. The light will flash again when there are new messages waiting.

Contrast Level

Use these options to set the preference of contrast level and backlight for your phone. Contrast Level Use the Change softkey to cycle through eight contrast settings, which brighten or darken the display.

Live Dialpad*

This option turns the Live Dial Pad mode ON or OFF. With live dial pad ON, the 51i IP phone automatically dials out and turns ON Handsfree mode as soon as a dial pad key or softkey is pressed. With live dial pad OFF, if you dial a number while the phone is on-hook, lifting the receiver or pressing the Speaker initiates a call to that number. Press the Change softkey to turn ON or OFF the dial pad mode.
*Availability of feature dependant on your phone system or service provider.

Set Audio

The 51i allows you to use a handset to handle incoming or outgoing calls, and handsfree to handle incoming calls. The audio mode option allows you to set the audio on the IP phone. Audio Mode Option Description Speaker Calls can be picked up using the handset or handsfree speakerphone. In handset audio mode, pressing the Speaker button on the phone switches to handsfree speakerphone. In Speaker audio mode, lift the handset to switch to the handset.

Call Forward

Use this option to call forward your phone. Use the and buttons to move between the fields to set the call forward Number, Mode, and No. Rings. The selectable call forward mode includes: All, Busy, NoAns (No Answer), BusyNoAns (Busy No Answer), or Off; this is selected via the and buttons.


This is a system administrator level-only option, and requires a password to access. See the SIP IP Phone Aastra 51i, 53i, 55i, 57i, 57i CT Administrator Guide for details.

SIP Settings

Phone Status
This option allows you to: View your network status including your phones IP and MAC address View your firmware version Restart your phone There is also a system administrator level-only option to reset the phone to factory default settings. See your system administrator for details.
18 Model 51i IP Phone Installation Guide

User Password

Use this option to change your user password. Valid values for entering a password are 0 to 4294967295 (integers only; symbols and alpha characters are not allowed). Default password is an empty string "" (field is blank).

Phone Lock

Use this option to lock the phone from unauthorized users. When the phone is locked, users are unable to dial from the phone unless it has been unlocked. To unlock the phone, press the the user or administrator password.

button and enter either

Note: While the phone is locked, only emergency number dialing is permitted. The default permissible emergency numbers are 911, 999, 112, and 110; this is configurable via the WebUI or configuration file.
Hint: To quickly lock your phone, press the key.

button followed by the

Model 51i IP Phone Installation Guide 19

Other Phone Features

Adjusting the Volume
Pressing the volume button ringer volume. adjusts the receiver, speaker, and
To adjust the ringer volume, leave the handset in the cradle and press the volume button while there is no active call. There are 10 settings for the ringer including Off the display will temporarily indicate the current ringer volume setting. To adjust the handset volume, lift the handset and press the volume button while the handset is off hook. The handset will remain at this volume until it is adjusted again. To adjust the speaker volume, press the volume button while the speaker is activated (activate the speaker by pressing Speaker ; ensure handsfree speakerphone audio mode is set). The speaker will remain at this volume until it is adjusted again.

Status Lights (LEDs)

The speaker LED, beside the
key, and the Message Waiting
Indicator (MWI) LED, on the top right of your phone, provide visual indications of your phones status.

Speaker LED

Speaker LED Status ON solid Rapid Flash Description Indicates a call is on Handsfree (speakerphone) Indicates the call is muted. Press the call off mute.

to take

Message Waiting Indicator (MWI)
MWI LED Status Slow Flash Rapid Flash Even Flash Description Indicates you have a message(s). Indicates you have an incoming call. Indicates one or more calls are on hold.

Call Timer

When you make or answer a call, the Timer shows the elapsed time of the call.
20 Model 51i IP Phone Installation Guide
Troubleshooting Solutions
Why is the light not coming on with a new Voice Mail Message?
Your phone system or service provider must provide Visual Message Waiting service for this function to work. Check with your system administrator for more information.
Why is my handset not working?
Check to ensure that the handset cord is fully connected to both the phone and handset. See the section "Connecting a Handset" on page 11 for information.
Why is my speakerphone not working?
If the speaker light goes out, the phone is set up to be used only with a handset. If the light stays on steady and you hear dial tone, you can alternate between the speakerphone and the handset by pressing Speaker. See the section, "Set Audio" on page 18 for instructions on how to change the Set Audio feature.

Why is my display blank?

Ensure that power is being provided to your phone. If your Network does not provide Inline power over Ethernet, you can obtain an additional accessory, the a PoE inline power injector, to provide power over Ethernet locally to your phone. See the section "Connecting to the Network and to Power" on page 9 for details.
Why can I only see 1 option when the installer or user guide says there are more?
The telephone screen will only show 1option at a time. To see more, press the down arrow button.
Why does the telephone wobble?
Make sure the cords are routed properly through the back of the phone, as indicated in the section, "Connecting a Handset" on page 11. Check that the leg stands have been properly snapped into place. Since the legs can be oriented in two different ways and in two different positions to offer four different phone viewing angles, check that both legs are oriented in the same direction and in the same position on either side of the phone.

Limited Warranty

Aastra Telecom warrants this product against defects and malfunctions during a one (1) year period from the date of original purchase. If there is a defect or malfunction, Aastra Telecom shall, at its option, and as the exclusive remedy, either repair or replace the telephone set at no charge, if returned within the warranty period. If replacement parts are used in making repairs, these parts may be refurbished, or may contain refurbished materials. If it is necessary to replace the telephone set, it may be replaced with a refurbished telephone of the same design and color. If it should become necessary to repair or replace a defective or malfunctioning telephone set under this warranty, the provisions of this warranty shall apply to the repaired or replaced telephone set until the expiration of ninety (90) days from the date of pick up, or the date of shipment to you, of the repaired or replacement set, or until the end of the original warranty period, whichever is later. Proof of the original purchase date is to be provided with all telephone sets returned for warranty repairs.


Aastra Telecom does not warrant its telephone sets to be compatible with the equipment of any particular telephone company. This warranty does not extend to damage to products resulting from improper installation or operation, alteration, accident, neglect, abuse, misuse, fire or natural causes such as storms or floods, after the telephone is in your possession. Aastra Telecom shall not be liable for any incidental or consequential damages, including, but not limited to, loss, damage or expense directly or indirectly arising from the customers use of or inability to use this telephone, either separately or in combination with other equipment. This paragraph, however, shall not apply to consequential damages for injury to the person in the case of telephones used or bought for use primarily for personal, family or household purposes. This warranty sets forth the entire liability and obligations of Aastra Telecom with respect to breach of warranty, and the warranties set forth or limited herein are the sole warranties and are in lieu of all other warranties, expressed or implied, including warranties or fitness for particular purpose and merchantability.

Warranty Repair Services

Should the set fail during the warranty period; In North America, please call 1-800-574-1611 for further information. Outside North America, contact your sales representative for return instructions. You will be responsible for shipping charges, if any. When you return this telephone for warranty service, you must present proof of purchase.

After Warranty Service

Aastra Telecom offers ongoing repair and support for this product. This service provides repair or replacement of your Aastra Telecom product, at Aastra Telecom's option, for a fixed charge. You are responsible for all shipping charges. For further information and shipping instructions; In North America, contact our service information number: 1-800-574-1611. Outside North America, contact your sales representative. Note: Repairs to this product may be made only by the manufacturer and its authorized

agents, or by others who are legally authorized. This restriction applies during and after the warranty period. Unauthorized repair will void the warranty.

audio, setting 18

network configuration settings for 18 network connection, direct 7 network connection, shared 8
call forward 18 call timer 20 Connecting Direct Network 7 Handset or Headset 11 Shared Network 8 To Power 9 To the Network 9 contrast level, setting 17 Customizing your phone 14

Optional Accessories 3

phone features 1 phone parts 3 phone status 18 PoE 3 power adapter 9
date setting date 17 setting format 17 daylight savings 17 dialpad, live 18
Requirements 1 ring tone, setting 17
SIP settings 18 speaker mode 18 Stand Installation 12
Ethernet Cable 8, 9 Ethernet wall jack 7
time setting format 17 setting time 17 setting time server 16 setting time zone 17 tone set, setting 17

Handset, connecting 11

indicator light 20 inline power 9, 10 Installation 5 installation desk 12 Installation and Setup 7 Introduction 1, 23

user password 19

volume, adjusting 20

Key Description 4

wall installation 13 warranty, limited 23 Web UI, using 15
language 16 lights or LEDs MWI 20 speaker 20 status 20 locking the phone 19
message waiting, clearing 17 MWI (message waiting indicator) 20


If youve read this owners manual and consulted the Troubleshooting section and still have problems, please visit our Web site at, or call 1-800-574-1611 for technical assistance. Aastra Telecom Inc. 2007 41-001211-00 Rev 00


Aastra 6751i (51i)

Exceptional Features and Value in a Featured IP Telephone
The Aastra 6751i 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 6751i 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 67xi series of IP telephones, and supported by a host of Aastra configuration tools, XML application guides and regular new feature software releases, 6751i is ideally suited for light to regular IP telephone applications for the small and large business market and enterprise applications.

IP Telephones

Key Features and Benefits:
XML Browser The Aastra 6751i 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 6751i 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 6751i 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. Expandability The Aastra 6751i supports up to three Aastra 516M modules, each offering 36 keys with LED indicators to create a feature rich attendant console emarkable Audio R All 67xi Series IP Telephones offer full-duplex speakerphone for excellent voice clarity and delivery. With the addition of wide-band audio sound* and our over 15 years experience in telecommunications and telephone design, Aastra can ensure superior voice quality on every product we sell. implified Deployment S 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.
*Available 1st Quarter 09

Feature Highlights*

1 call appearance Distinctive ringing, priority alerting XML support Personal directory Call forward Call transfer Call waiting Call timer Caller and calling line information Callers log Local 3-way Conference Intercom and group paging reception with auto-answer Redial list Do Not Disturb Programmable number pad speedial Live dial pad support Missed Call Notification Supports Busy Lamp Field (BLF) monitoring by other end points* Shared call and bridged line appearances
* Feature availability dependant on IP telephony systems
Your Connection to the World
Aastra 6751i (51i) Technical Specifications
Feature Keys 1 call appearance 4 navigational keys 9 configurable speed-dial keys using 2 volume control keys 9 dedicated hard keys for most common

call handling functions including: Goodbye, Services, Hold, Redial, Save, Delete, Swap, Speakerphone, Mute number keypad

Localization Multi-lingual support English, French,
for customization and additional language translations Country-specific call progress tones and cadences Latin1, Latin 2 Character set
Downloadable language pack support

Spanish, Italian, German

AC adapter Ethernet cable Programmable keys label Wall mounting kit Installation Guide
Physical 20.8 cm W x 23.5 cm D x 8.0 cm H (8.2W 889g (31.3 oz) 4 positions footstand Wall mountable Operating Conditions Operating Conditions: Temperature: 0C to 50C (32F to 122F) Relative Humidity: 20% to 90%, non Storage Temperature: -50C to 70C (-58F

to 158F)


x 9.3D x 3.2H)

Audio and Codecs Hearing aid compatible (HAC) handset Full-duplex quality speakerphone G.711 -law / A-law G.729 G.722 wideband1 Independent volume setting for handset/
speaker/headset Echo cancellation Comfort noise Packet loss concealment Headset mode support (via handset jack) Voice quality metrics1
Protocol IETF SIP (RFC3261) and associated RFCs Networking and Provisioning Dual 10/100 Mbps switched Ethernet Manual or Dynamic Host Configuration Support of multiple DHCP options: 66, 60, Time and date synchronization using
43, 77, 159, 160 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 RTCP support (RFC1889) RTP streaming for Paging and Intercom applications STUN / TURN support IEEE 802.1x protocol support LLDP-MED support Protocol (DHCP) IP address setup ports
Regulatory ROHS compliant WEEE (2002/96/EC) CE Mark (89/336/EEC EMC Directive and
73/23/EEC Low Voltage Directive)

CE /Europe

Display and Indicator 3 line adjustable LCD display LED for call and message waiting


Security User and administrator level passwords Encryption of configuration files HTTPS configuration download and web

management Phone lock with PIN Digest Authentication Transport layer Security (TLS)2 Secure Real-Time Protocol (SRTP)2 for login
EMC FCC Part 15 Class B ICES-003 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 FCC Part 68 (Hearing Aid Compatibility) AS/ACIF S004 Part Numbers A1751-0131-10-01 6751i Phone with


XML API Capabilities Display control based on user actions or
on events Dynamic Phone Configuration RTP Streaming control CTI applications See XML API Documentation for more details
Power AC adapter (48V DC) included Integrated IEEE 802.3af Power Over

Ethernet (PoE) support

Interoperability Visit
for an up to date listing of approved vendor/interoperability
Package Contents Aastra 6753i phone Handset and coil cord 2 x Footstand
English Text Keypad, Includes English Install Guide A1751-0131-10-55 6751i Phone with International Symbols Keypad, Includes Multi-language install Guides
Requires 2.5 Software release or latest Not available on 3-way conference scenarios

Rev 01/09




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