Aastra Telecom IP Phone User Manual

57i IP Phone
Release 2.1
User Guide
41-001201-00
Rev 02
Aastra Telecom does not accept liability for any damages and/or long distance charges, which result from unauthorized and/or unlawful use.
Copyright 2007 Aastra Telecom. www.aastra.com
All Rights Reserved.

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 These programs are confidential and proprietary, and are protected as such by copyright law as unpublished works and by international treaties to the fullest extent under the applicable law of the jurisdiction of the Customer.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.
Software License Agreement
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 57i IP Phone User Guide iii
Table of Contents
Software License Agreement .................................................................................. iii
About this Guide ........................................................................................................1
Documentation ...........................................................................................................1
Introduction................................................................................................................2
Phone Features..........................................................................................................2
Requirements............................................................................................................3
Installation and Setup ...............................................................................................3
Getting Started...........................................................................................................4
Plugging in and Starting the Phone ..........................................................................4
Network Connected/Network Disconnected ............................................................8
Idle Screen ................................................................................................................9
IP Phone Keys and Key Descriptions ....................................................................13
Key Descriptions ....................................................................................................13
Methods for Customizing Your Phone...................................................................16
Phone Options via the IP Phone UI ........................................................................16
Phone Options via the Aastra Web UI....................................................................19
Phone Status .............................................................................................................23
Phone Status via IP Phone UI.................................................................................23
Phone Status via the Aastra Web UI.......................................................................25
Customizing Your Phone.........................................................................................26
Ring Tones and Tone Sets ......................................................................................26
Contrast Level ........................................................................................................29
Backlight ................................................................................................................30
Live Dialpad* .........................................................................................................32
Set Audio ................................................................................................................33
Time and Date ........................................................................................................36
Language ................................................................................................................42
User Password ........................................................................................................44
Resetting a User Password .....................................................................................46
Restarting your phone.............................................................................................47
Phone Lock.............................................................................................................48
Defining an Emergency Dial Plan ..........................................................................50
Table of Contents
Line Keys and Softkeys ...........................................................................................52
Multiple Line and Call Appearances ......................................................................52
Softkeys ..................................................................................................................53
State-Based Softkeys (Bottom Keys only) .............................................................56
Line Key .................................................................................................................60
Speeddial Key.........................................................................................................63
"Do not Disturb" (DND) Key .................................................................................67
Busy Lamp Field (BLF) Key..................................................................................69
v
Table of Contents
BLF List Key ..........................................................................................................71
Automatic Call Distribution (ACD) Key (for Sylantro Servers) ............................74
Directed Call Pickup/Group Call Pickup Keys (for Sylantro Servers)...................79
XML Key................................................................................................................83
Flash Key................................................................................................................88
Sprecode Key..........................................................................................................89
Park/Pickup Keys ...................................................................................................91
Last Call Return (lcr) Key (Sylantro Servers only) ................................................97
Services Key ...........................................................................................................99
Directory Key .......................................................................................................101
Callers List Key ....................................................................................................103
Intercom Key ........................................................................................................105
None Key..............................................................................................................107
Empty Key............................................................................................................108
Phone Lock Key ...................................................................................................109
Table of Contents
Deleting a Key .....................................................................................................111
Making Calls ..........................................................................................................112
Dialing a Number .................................................................................................112
Pre-dialing a Number ...........................................................................................112
Using Handsfree Speakerphone ........................................................................... 113
Using a Headset ....................................................................................................114
Using Intercom .....................................................................................................116
Redial....................................................................................................................118
Mute......................................................................................................................119
Receiving Calls .......................................................................................................120
Answering an Incoming Call................................................................................120
Sending an Incoming Call to Voicemail...............................................................121
Handling Calls........................................................................................................122
Placing a Call on Hold ..........................................................................................122
Transferring Calls .................................................................................................124
Conferencing Calls ...............................................................................................125
Ending Calls .........................................................................................................131
Managing Calls ......................................................................................................132
Directory List........................................................................................................132
Callers List............................................................................................................148
Call Forwarding....................................................................................................153
Missed Calls Indicator ..........................................................................................157
Voicemail .............................................................................................................158
vi
Table of Contents
Additional Features ...............................................................................................159
Star Codes.............................................................................................................159
Suppressing DTMF Playback...............................................................................159
Display DTMF Digits...........................................................................................161
Enable/Disable Call Waiting ................................................................................162
Play Call Waiting Tone ........................................................................................164
Stuttered Dial Tone...............................................................................................165
XML Beep Support ..............................................................................................166
Status Scroll Delay ...............................................................................................167
Incoming Call Interrupts Dialing..........................................................................168
Goodbye Key Cancels Incoming Calls.................................................................170
UPnP Mapping Lines (for remote phones)...........................................................172
Message Waiting Indicator ...................................................................................173
Incoming Intercom Call Features .........................................................................174
Using Redial Key for “Last Number Redial” .......................................................176
Available Features Enabled by Administrators..................................................177
Outgoing Intercom Calls ......................................................................................177
Missed Call Summary Subscription .....................................................................177
Customizable Callers List Key and Services Key ................................................178
Autodial (Hotline and Warmline).........................................................................178
Centralized Conferencing .....................................................................................178
Answer and Ignore Softkeys for XML Applications............................................179
XML Softkey for Special Characters in XML Applications ................................179
“Hold” Feature Enhancement (for Broadsoft Servers).........................................179
Model 536M and 560M Expansion Modules.......................................................180
Using the Expansion Modules..............................................................................181
Troubleshooting Solutions.....................................................................................184
Limited Warranty..................................................................................................191
Appendix A - Time Zone Codes .......................................................................... A-1
Table of Contents
vii

About this Guide

This guide explains how to use the basic features of your new 57i phone. Not all features listed are available by default. Contact your system or network administrator to find out which features and services are available to you on your system.
Your System Administrator has the ability to customize some features on this phone. For information on more advanced settings and configurations, administrators should refer to the Aastra SIP 53i, 55i, 57i, and 57i CT IP Phone Administration Guide.

Documentation

Aastra 57i IP Phone Installation Guide – Installation and set-up instructions, general features and functions, and basic options list customization. This Installation Guide is included with the telephone.
Aastra 57i IP Phone User Guide – Describes the most commonly used fea­tures and functions for an end user.
Aastra 53i, 55i, 57i, and 57i CT IP Phone Administration Guide – Describes how to set the 57i phone up on the network and contains advanced configura­tion instructions for the 57i. This guide has instructions that are at a user level.
Model 57i IP Phone User Guide 1
About this Guide

Introduction

This 57i IP telephone has all the features of a regular business phone, allowing you to make and receive calls, transfer, conference and more. The 57i IP telephone provides communications over an IP Network using the SIP IP telephony protocol.

Phone Features

• 11 line graphical LCD screen (144 x 128 pixels) with white backlight
• 12 multi-functional softkeys
— 6 Top Keys: Static softkeys
Introduction
*
— 6 Bottom Keys: State-based softkeys
• 4 call appearance lines with LEDs
• Supports up to 9 call lines
• Full-duplex speakerphone for handsfree calls
• Headset support (modular connector)
• Built-in-two-port, 10/100 Ethernet switch - lets you share a connection with your computer.
• Inline power support (based on 802.3af standard) which eliminates power adapters.
• AC power adapter (included)
• Enhanced busy lamp fields*
• Set paging*
Availability of feature dependant on your phone system or service provider.
(up to 10 programmable functions)
(up to 20 programmable functions)
2 Model 57i IP Phone User Guide

Requirements

The 57i IP Phone requires the following environment:
• SIP-based IP PBX system or network installed and running with a SIP account created for the 57i 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).
• Ethernet/Fast Ethernet LAN (10/100 Mb)
• Category 5/5e straight through cabling
• Power source
For Ethernet networks that supply in-line power to the phone (IEEE 802.3af):
- For power, use the Ethernet cable (supplied) to connect from the phone
directly to the network for power. (No 48v AC power adapter required.)
For Ethernet networks that DO NOT supply power to the phone:
- For power, use the 48V AC Power Adapter (included) to connect from the
DC power port on the phone to a power source.
or
- (optional) - For power, use a Power over Ethernet (PoE) power injector or a
PoE switch. A PoE power injector is available as an optional accessory from Aastra Telecom. Contact your Administrator for more information.

Installation and Setup

If your System Administrator has not already setup your 57i phone, please refer to the Aastra 57i Installation Guide for basic installation and physical setup information. For more advanced administration and configuration information, System Administrators should refer to the Aastra SIP 53i, 55i, 57i, 57i CT IP Phone
Administrators Guide.
Model 57i IP Phone User Guide 3
Introduction

Getting Started

The 57i must be set up and be configured prior to its first use. This section describes phone behavior and start up screens you may see when the phone is first plugged in, or when it is restarted.
Getting Started

Plugging in and Starting the Phone

The 57i automatically begins the start up sequence as soon as it is connected. The phone goes through this process the first time you plug in your phone and every time you restart your phone.
The phone displays the following startup screens.
4 Model 57i IP Phone User Guide
Checking for
Firmware.....
DHCP: waiting for IP...
The 57i phone then checks settings and looks for new configuration and firmware updates for the phone from a server. If a new update is found, the phone displays the message “Updating Configuration”. This may take a few moments while the phone downloads the latest updates.
Updating
configuration.....
Note: New updates to your phone can be automatically scheduled from the
server. This is set up on the phone system by your System Administrator and should be scheduled during non-business hours or slow call periods.
Important! Do not unplug or remove power to the phone while it is checking or installing firmware and configuration information.
Checking for firmware... Do not unplug the phone!
Getting Started
Model 57i IP Phone User Guide 5
If language packs were loaded to your phone by your System Administrator, the following screen displays during startup.
Downloading Language Packs
When the configuration update is complete, the phone displays the following screens and then displays the Idle screen..
Getting Started
Network
SIP
DSP
Done
6 Model 57i IP Phone User Guide
Services Dir
Callers
Icom
L1
Sat Jan 1 12:18am
John Smith
Idle Screen
Model 57i IP Phone User Guide 7
Getting Started

Network Connected/Network Disconnected

If your phone is successful when connecting to the network the following screen displays before changing to the Idle screen..
Services
Dir Callers
L1
Network Connected
Sat Jan 1 12:18am
Icom
John Smith
Getting Started
If your phone did not successfully connect to the network, the "Network Disconnected" prompt appears on the display and the telephone status light turns on.
Services
Dir Callers
L1
Network Disconnected
Sat Jan 1 12:18am
Icom
John Smith
Check that the cables are tightly connected to the phone and to the wall jack. The phone should automatically detect when it is reconnected and displays the "Network Connected" prompt for a few seconds. However, if changes have been made to your phone’s network settings, you may need to restart your phone.
For more information about connecting your phone, see the Aastra 57i IP Phone Installation Guide, the section "Connecting to the Network and to Power".
Check with your system or network administrator for assistance.
Note: f the phone displays "No Service" you can still use the phone but it is not
registered with the Registrar. For more information about registering your phone, see your System Administrator.
8 Model 57i IP Phone User Guide

Idle Screen

When the phone has successfully updated the configuration and connected to the network, the phone displays the Idle State screen. The idle screen is shown whenever your phone is not in use.
Services Dir
Callers
L1
Sat Jan 1 12:18am
Icom
John Smith
Note: Your System Administrator sets up your SIP screen name, line number,
and any other administrative features required. If your name does not display on the screen, contact your System Administrator.
The Idle State screen lists your name (SIP screen name) and day, date, and time. In the above screen, the "L1" indicates John Smith is configured on Line 1.
By default, the top softkeys 1 through 4 are configured for Services, Directory, Callers List, and Intercom, respectively. You can configure the 6 top keys with up to 10 functions, and the 6 bottom softkeys with up to 20 functions as required.
Services
Intercom
Directory
Callers List
Getting Started
Model 57i IP Phone User Guide 9
Reference
For more information about configuring the top and bottom softkeys, see "Softkeys" on page 53.
For more information about using the Services, Directory, Callers List, Intercom, Dial, Conference, and Transfer keys, see the following sections:
"Making Calls" on page 112.
"Handling Calls" on page 122.
"Managing Calls" on page 132.

Idle Screen With Softkeys Configured

If you or your administrator have configured softkey functions on your phone, the labels for those functions display on the screen. For example, in the following
Getting Started
illustration, "Home" was configured as a speeddial key on the bottom set of softkeys and "Do Not Disturb" (DND) was configured on the top set of softkeys..
Speeddial Softkey
Services Dir
Callers
L1
Sat Jan 1 12:18am
Home
Icom
DND
More
John Smith
"Do Not Disturb" Softkey
Idle Screen
You can configure up to 10 functions on the top set of softkeys. If you have additional functions configured on the top softkeys that do not display on the main idle screen, a "More" displays at the top right of the screen. Pressing the More softkey toggles between the first screen and a second screen of softkeys configured on your phone.
HR Support
Speeddial Softkeys
L1
Sat Jan 1 12:18am
Home
More
John Smith
Idle Screen
10 Model 57i IP Phone User Guide

Idle Screen with Voicemail Messages

The envelope icon displays on the Idle State screen only if you have new messages waiting. The number next to the envelope indicates how many new messages you have.
Voicemail Icon
Services
Dir Callers
1
L1
Sat Jan 1 12:18am
Icom
John Smith
Idle Screen
To access your voicemail messages, use the star codes for your system if a voicemail softkey has not been configured on your phone. For more information on your system’s star codes, please refer to the documentation for the voicemail system you are using.
Model 57i IP Phone User Guide 11
Getting Started

Screen Display After Picking Up the Handset

When you pickup the handset, the screen displays as follows:
Services Dir
Callers
L1
Icom
John Smith
>
Dial Conf Xfer More
This screen displays the following keys located on the bottom left of the screen:
Getting Started
•Dial
• Conf (Conference)
• Xfer (Transfer)
A More softkey also displays at the bottom right of the screen if you have configured softkeys other than the default softkeys.
For example, if you configure a bottom softkey for speeddialing to Home, and then you pickup the handset, the screen displays the Dial, Conf, and Xfer default softkeys with a More softkey. You can press the More softkey to toggle between the first and second screens to display all configured softkeys. See illustrations below.
Services Dir
Callers
L1
Sat Jan 1 12:18am
Home
Icom
John Smith
Services
Dir Callers
L1
Icom
John Smith
>
Dial Conf Xfer More
Services
Dir Callers
L1
>
Home
John Smith
Icom
More
Idle Screen
Note: The bottom set of 6 softkeys map to the current state-based configurable
softkeys. The top set of 6 softkeys allow you to configure up to 10 func­tions.
After Handset Pickup
12 Model 57i IP Phone User Guide
After Pressing "More"

IP Phone Keys and Key Descriptions

The following sections describe the various 57i phone key functions, and how they help you make and manage your calls and caller information.

Key Descriptions

The following table identifies the keys on the key panel of your 57i IP phone that you
can use for handling calls.
IP Phone Keys and Key Descriptions
Keys Key Description
Goodbye key - Ends an active call. The Goodbye key also
exits an open list, such as the Options List, without saving changes.
Options key - Accesses 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 call appearance button beside the light that is flashing.
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, headset, ringer, and handsfree speaker.
Model 57i IP Phone User Guide 13
Keys Key Description
Line/Call Appearance key - Connects you to a line or call.
The Aastra 57i IP phone supports up to 4 line keys.
Handsfree key - Activates Handsfree for making and receiving calls without lifting the handset. When the audio mode option is set, this key is used to switch between a headset and the handsfree speakerphone.
Mute key - Mutes the microphone so that your caller cannot hear you (the light indicator flashes when the microphone is on mute).
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 different line/call appearances. While in the Options List, these 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.
IP Phone Keys and Key Descriptions
14 Model 57i IP Phone User Guide
Keys Key Description
Softkeys - 12 softkeys on the 57i IP Phone.
- 6 Top Keys: static softkeys (up to 10 programmable functions)
- 6 Bottom Keys: state-based softkeys (up to 20 programmable functions) All top and bottom keys can be configured for specific functions.
By default, keys 1 through 4 are assigned as Services, Directory, Callers List, and Intercom, respectively:
1 - ServicesAccesses enhanced features and services such as XML applications and voicemail, provided by third parties. 2 - DirAccesses the Directory List which displays up to 200 names and phone numbers (stored in alphabetical order) 3 - CallersAccesses the Callers List which lists the last 200 calls received. 4 - IcomAutomatically connects with a remote extension for outgoing calls, and answers incoming intercom calls.
The following softkeys display when you pick up the handset:
Dial - After entering a phone number from the keypad, you can press the Dial softkey to immediately dial the number.
Conf - Begins a conference with the active call. Xfer - Transfers the active call to another number.
Note: For more information about programming the
softkeys to perform specific functions, see the "Softkeys" on
page 53.
IP Phone Keys and Key Descriptions
Model 57i IP Phone User Guide 15

Methods for Customizing Your Phone

There are two ways to customize specific options on your phone:
• Using the Options key on the IP Phone
• Using the Aastra Web UI in an Internet browser window from your PC.

Phone Options via the IP Phone UI

You can customize your phone by pressing the Options key and accessing
the IP Phone UI.
These options allow you to customize the following phone settings.
Option
Number Option
1 Call Forward
2 Preferences
3 Phone Status
Methods for Customizing Your Phone
4 User Password
5 Administrator Menu
6 Restart Phone
7 Phone Lock
1. Cfwd Number
2. Cfwd Mode
3. No. Rings
1. Tones
Ring Tone Tone Set
2. Contrast Level
3. Live Dialpad
4. Set Audio
Audio Mode Headset Mic Vol
5. Time and Date Time Zone Daylight Savings Time Format Date Format Time Se rver
Time Se rver 1 Time Se rver 2
Time Se rver 3 Set Time Set Date
6. Language
1. IP&MAC Addresses
2. LAN Port
3. PC Port
4. Firmware Info
(Password Protected)
Note: The "Administrator Menu" options are administrator level functions
only, and are not accessible by the user. These options should only be set up and changed by your system administrator.
16 Model 57i IP Phone User Guide

Simplified Options Menu

Your System Administrator may configure a simplified options menu for your phone. The following table indicates the options that may appear on your phone if the
simplified options menu is applied.
Option
Number Option
1 Call Forward
2 Preferences
3 Phone Status
4 Phone Lock
1. Cfwd Number
2. Cfwd Mode
3. No. Rings
1. Tones
Ring Tone Tone Set
2. Contrast Level
3. Live Dialpad
4. Set Audio
Audio Mode Headset Mic Vol
1. IP&MAC Addresses
2. LAN Port
3. PC Port
4. Firmware Info
Methods for Customizing Your Phone
Model 57i IP Phone User Guide 17

Using the IP Phone UI

IP Phone UI
1. Press the Options key on the phone to enter the Options List.
2. To go to an Option, use and to scroll through the list, or press the num- ber corresponding to the Option.
3. Press the Show softkey, the button, or press the digit number of the corre-
sponding option to select an option.
4. Use the softkeys that display for each option to change a selected option.
5. Press the Done button to save the change.
6. Press the button, the button, or the button at any time to exit
without saving changes.
References
For more information about customizing your phone using the available options from the IP Phone UI, see the section "Customizing Your Phone" on page 26.
For more information about administrator options, contact your System Administrator.
Methods for Customizing Your Phone
18 Model 57i IP Phone User Guide

Phone Options via the Aastra Web UI

In addition to the IP Phone UI options, you can also customize additional options on the IP Phone using the Aastra Web UI. In order to access your phone using the Aastra Web UI, you need to know your phone’s IP address. To find your phone’s IP address, see "Finding Your Phone’s IP Address" on page 24.

Using the Aastra Web UI

Aastra Web UI
1. Open your web browser, enter the phone’s IP address or host name into the address field and press <Enter>. The following logon screen displays.
Methods for Customizing Your Phone
2. 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..
Model 57i IP Phone User Guide 19
.
3. You can logout of the Aastra Web UI at any time by clicking Log Off.
Methods for Customizing Your Phone
20 Model 57i IP Phone User Guide
The following categories display in the side menu of the Aastra Web UI: Status,
Operation, Basic Settings.
Headings Descriptions
Status The Status section displays the network status and the MAC address
Operation User Password - Allows you to change user password.
of the IP phone. It also displays hardware and firmware information about the IP phone. The information in the Network Status window is read-only.
Phone Lock - Allows you to assign an emergency dial plan to the phone, lock the phone to prevent any changes to the phone and to prevent use of the phone, and reset the user password.
Softkeys and XML - Allows you to configure up to 6 top softkeys and 6 bottom softkeys with functions identified in the list below. You can configure up to 10 functions on the top softkeys and up to 20 functions on the bottom softkeys.
Available Functions for Softkeys
none sprecode
•line •park
speeddial pickup
do not disturb (DND) Last Call Return (lcr)
Busy Lamp Field (BLF) Directory
BLF List Callers List
Auto Call Distribution (ACD)
Directed Call Pickup Services
Extensible Markup Language (XML)
•flash •Empty
Intercom
Phone Lock
Methods for Customizing Your Phone
Expansion Modules - Allows you to configure an additional 36
softkeys with a 536M Expansion Module, or an additional 60 softkeys with a 560M Expansion Module if an it is attached to the phone. This option displays on the side menu of the Aastra Web UI only if an Expansion Module is attached.
Note: Not all functions in the table above apply to the Expansion Modules.
Directory - Allows you to copy the Callers List and Directory List from your IP phone to your PC.
Reset - Allows you to restart the IP phone when required.
Model 57i IP Phone User Guide 21
Headings Descriptions
Basic Settings
Preferences - Allows you to enable/disable the following:
Static park call
Static Pickup call
Suppress DTMF Playback
Display DTMF Digits
Call Waiting
Play Call Waiting Tone
Stuttered Dial Tone
XML Beep Support
Status Scroll Delay
Incoming Call Interrupts Dialing
Goodbye Key Cancels Incoming Call
UPnP Mapping Lines
Message Waiting Indicator Line This category also allows you to configure:
incoming Intercom call settings
ring tones (global and per-line basis)
ring tone sets
time and date settings
language settings.
Call Forward - Allows you to set a phone number destination for where you want calls forwarded. Call forward can be configured using a specific mode (off, all, busy, no answer, busy no answer) on a global or per-line basis.
Methods for Customizing Your Phone
22 Model 57i IP Phone User Guide
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