AudioCodes C450HD Service manual

User's and Administrator's Manual
AudioCodes High Definition IP Phones Series
450HD IP Phone for
Microsoft®Teams™
Version 0.314

User's and Administrator's Manual Contents
Version 0.314 3 450HD IP Phone
Table of Contents
1Overview ......................................................................................................................9
1.1 Specifications.................................................................................................................. 9
2Setting up the Phone.................................................................................................11
2.1 Unpacking..................................................................................................................... 11
2.2 Device Description ........................................................................................................ 12
2.2.1 Front View.....................................................................................................................12
2.2.2 Rear View .....................................................................................................................13
2.3 Cabling.......................................................................................................................... 15
2.4 Mounting the Phone...................................................................................................... 16
2.4.1 Desktop Mounting .........................................................................................................16
2.4.1.1 Routing the Handset Cable.............................................................................16
2.4.2 Wall Mounting ...............................................................................................................16
3Starting up .................................................................................................................19
3.1 Configuring Device Settings.......................................................................................... 19
3.2 Restoring the Phone to Default Settings........................................................................ 27
3.2.1 Performing a Hard Restore............................................................................................27
3.2.2 Performing a Soft Restore .............................................................................................28
4Teams Application.....................................................................................................31
4.1 Signing In...................................................................................................................... 31
4.1.1 Getting Acquainted with the Phone Screen....................................................................33
4.1.2 Changing Presence Status ............................................................................................34
4.2 Configuring Teams Application Settings........................................................................ 36
4.3 Setting up a Meeting ..................................................................................................... 38
4.4 Accessing Voicemail ..................................................................................................... 39
4.5 Using Audio Devices..................................................................................................... 39
4.6 Signing Out ................................................................................................................... 40
5Performing Basic Operations ...................................................................................41
5.1 Making a Call ................................................................................................................ 41
5.1.1 Redialing.......................................................................................................................42
5.1.2 Dialing a Missed Call .....................................................................................................42
5.2 Answering Calls ............................................................................................................ 43
5.3 Ending an Established Call ........................................................................................... 43
5.4 Managing Calls ............................................................................................................. 44
5.5 Parking a Call................................................................................................................ 45
5.6 Initiating a Teams Meeting ............................................................................................ 45
5.7 Viewing and Playing Voicemail Messages .................................................................... 47
5.7.1 Rejecting an Incoming Call, Sending it Directly to Voicemail ..........................................48
5.8 Adjusting Volume.......................................................................................................... 48
5.8.1 Adjusting Ring Volume ..................................................................................................48
5.8.2 Adjusting Tones Volume................................................................................................48
5.8.3 Adjusting Handset Volume ............................................................................................49
5.8.4 Adjusting Speaker Volume ............................................................................................49
5.8.5 Adjusting Headset Volume ............................................................................................49
5.9 Managing Meetings....................................................................................................... 50
6Updating C450HD Phone Firmware Manually .........................................................51
7Troubleshooting ........................................................................................................53

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7.1 Users ............................................................................................................................ 53
7.2 Network Administrators ................................................................................................. 53
7.2.1 Collecting Logs..............................................................................................................53
7.2.2 Remote Logging............................................................................................................56
7.2.3 SSH ..............................................................................................................................56
7.2.3.1 Capturing the Phone Screen...........................................................................56
7.2.3.2 Running the tcpdump Tool..............................................................................56
7.2.4 Getting Company Portal Logs........................................................................................57
7.2.5 Getting Audio Debug Recording Logs............................................................................58
7.2.6 Collecting Media Logs (*.blog) from the Phone ..............................................................58

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List of Figures
Figure 2-1: Front View.................................................................................................................................12
Figure 2-2: Rear View .................................................................................................................................13
Figure 2-3: Cabling .....................................................................................................................................15
Figure 4-1: Signing-in with credentials.........................................................................................................31
Figure 4-2: Signing-in via PC / Smart Phone ...............................................................................................32
Figure 4-3: Personal or Shared ...................................................................................................................32
Figure 4-4: Personal Mode..........................................................................................................................32
Figure 4-5: Shared Mode ............................................................................................................................33
Figure 4-6: Phone Screen in Idle State - Calls .............................................................................................33
Figure 4-7: Phone Screen in Idle State - Menu Items...................................................................................34
Figure 4-8: Settings.....................................................................................................................................36
Figure 4-9: Meetings ...................................................................................................................................38
Figure 4-10: Calendar view .........................................................................................................................38
Figure 4-11: Meeting join view.....................................................................................................................39
Figure 4-12: Voicemail ................................................................................................................................39
Figure 4-13: Voicemail ................................................................................................................................39
Figure 7-1: Microsoft Teams Admin Portal - Diagnostics..............................................................................54
Figure 7-2: Microsoft Teams Admin Portal – Logs Upload to Server ............................................................55
Figure 7-3: History - Download....................................................................................................................55

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List of Tables
Table 1-1: C450HD IP Phone for Microsoft Teams Software Specifications ...................................................9
Table 2-1: Font View Description.................................................................................................................12
Table 2-2: Rear View Description................................................................................................................14
Table 3-1: Device Functions Settings Descriptions ......................................................................................20
Table 4-1: Phone Screen in Idle State - Description.....................................................................................33
Table 4-2: Menu Item Descriptions..............................................................................................................34
Table 4-3: Presence Statuses .....................................................................................................................35
Table 4-4: Idle Screen Description ..............................................................................................................36
Table 7-1: Troubleshooting .........................................................................................................................53

User's and Administrator's Manual Notices
Version 0.314 7 450HD IP Phone
Notice
Information contained in this document is believed to be accurate and reliable at the time of printing.
However, due to ongoing product improvements and revisions, AudioCodes cannot guarantee
accuracy of printed material after the Date Published nor can it accept responsibility for errors or
omissions. Updates to this document can be downloaded from
https://www.audiocodes.com/library/technical-documents.
This document is subject to change without notice.
Date Published: June-17-2019
Trademarks
AudioCodes Ltd. All rights reserved. AudioCodes, AC, HD VoIP, HD VoIP Sounds Better,
IPmedia, Mediant, MediaPack, What’s Inside Matters, OSN, SmartTAP, VMAS, VoIPerfect,
VoIPerfectHD, Your Gateway To VoIP, 3GX, VocaNom, AudioCodes One Voice and CloudBond
are trademarks or registered trademarks of AudioCodes Limited All other products or trademarks
are property of their respective owners. Product specifications are subject to change without
notice.
WEEE EU Directive
Pursuant to the WEEE EU Directive, electronic and electrical waste must not be disposed of with
unsorted waste. Please contact your local recycling authority for disposal of this product.
Customer Support
Customer technical support and services are provided by AudioCodes or by an authorized
AudioCodes Service Partner. For more information on how to buy technical support for
AudioCodes products and for contact information, please visit our Web site at
https://www.audiocodes.com/services-support/maintenance-and-support.
Stay in the Loop with AudioCodes
Abbreviations and Terminology
Each abbreviation, unless widely used, is spelled out in full when first used.
Documentation Feedback
AudioCodes continually strives to produce high quality documentation. If you have any comments
(suggestions or errors) regarding this document, please fill out the Documentation Feedback form
on our Web site at http://online.audiocodes.com/documentation-feedback.

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Related Documentation
Document Name
C450HD IP Phone for Microsoft Teams Quick Guide
C450HD IP Phone for Microsoft Teams Release Notes
https://docs.microsoft.com/en-us/MicrosoftTeams/phones-for-teams

User's and Administrator's Manual 1. Overview
Version 0.314 9 450HD IP Phone
1 Overview
The AudioCodes C450HD IP phone is a native Microsoft Teams high-end executive business
phone with a large color touch screen and full UC integration for the Native Microsoft Teams
Online market.
The Microsoft Teams C450HD is equipped with a 5-inch color capacitive touch screen, 1280 x
720 resolution and optional integrated Wi-Fi and Bluetooth support (contact your local
AudioCodes representative for more information about regional availability of Wi-Fi / Bluetooth).
The phone can be managed by the Microsoft Teams & Skype for Business Admin Center. For
more information, see https://docs.microsoft.com/en-us/MicrosoftTeams/phones-for-teams.
The phone also features the option to be used as a Microsoft Skype for Business IP phone,
offered as part of AudioCodes’ Managed IP Phones solution which defines the IP phone as an IT-
managed entity and delivers unique and complete lifecycle management of end-user desktop
devices. A single-click switchover between Microsoft Teams with native client experience and
Skype for Business is supported.
1.1 Specifications
The table below summarizes the software specifications of the C450HD IP Phone for Microsoft
Teams.
Table 1-1: C450HD IP Phone for Microsoft Teams Software Specifications
Feature Details
Media Processing Voice Coders: G.711, G.729, G.722, SILK Opus
Acoustic Echo Cancelation: G.168-2004 compliant, 64-msec tail length
Adaptive Jitter Buffer
Voice Activity Detection
Comfort Noise Generation
Packet Lost Concealment
RTP/RTCP Packetization (RFC 3550, RFC 3551), SRTP (RFC 3711)
Microsoft Teams phones
feature set

Authentication (Sign in with user credentials; Sign in using PC/Smartphone;
Modern Authentication; Phone lock/unlock)
Calling (Incoming/Outgoing P2P calls; In-call controls via UI (Mute,
hold/resume, transfer, end call); PSTN calls; Visual Voicemail; 911 support
Calendar and Presence (Calendar Access and Meeting Details; Presence
Integration; Exchange Calendar Integration; Contact Picture Integration;
Corporate Directory Access)
Meetings (One-click Join for Meetings; Join Skype for Business meetings;
Meeting Call controls [Mute/unmute, hold/resume, hang up, add/remove
participant]; Meeting Details. See also https://docs.microsoft.com/en-
us/MicrosoftTeams/phones-for-teams.
Configuration / Management Microsoft Teams & Skype for Business Admin Center (Provisioning and
Logging)
Debugging Tools Log upload to Microsoft server (certification for 3rd party Skype for
Business clients)
Remote logging via Syslog
SSH Access
Capturing the phone screen
TCPdump
Company Portal (Intune) logs

Audio Debug recording logs

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Feature Details

Media logs (*.blog)
Localization Support Multi-lingual support; the language pack list is not yet final and i
s subject to
modification.
C450HD Hardware Five-inch color capacitive touch screen, 1280 x 720 resolution, with an
intuitive user interface.
Wired connectivity:

Two RJ-
45 [Gigabit Ethernet (GbE)] (10/100/1000BaseT Ethernet) ports
for WAN and LAN

RJ-9 port (jack) for headset

RJ-9 port (jack) for handset

2 x USB ports for headset support

RJ-11 interface
Mounting:

Wall and desktop mounting options

One angle for desktop mount, another angle for wall mount
Power:

DC jack adapter 12V

Power supply AC 100 ~ 240V

PoE Class 3: IEEE802.3af (optional)
Keys:

VOICE MAIL message hotkey (including LED)

4-way navigation button with OK key

MENU

REDIAL

HOLD

MUTE (including LED)

TRANSFER

VOLUME control key

HEADSET (including LED)

SPEAKER (including LED)

BACK (the ‘x’ key)
CONTACTS (not yet supported in Teams)

User's and Administrator's Manual 2. Setting up the Phone
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2 Setting up the Phone
2.1 Unpacking
When unpacking, make sure the following items are present and undamaged:
Phone / Stand Handset / Cord
Cat 5e Ethernet Cable AC Power Adapter (Optional)
If anything appears to be missing or broken, contact the distributor from whom you purchased the
phone for assistance.

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2.2 Device Description
Use the graphics below to identify and familiarize yourself with the device's hardware functions.
2.2.1 Front View
The front view of the phone is shown in Figure 2-1 and described in Table 2-1.
Figure 2-1: Front View
`
Table 2-1: Font View Description
Item # Label/Name Description
1
Ring LED
Indicates phone status:
Green: Idle state
Flashing blue: Incoming call (ringing)
Red: Answered call
2 TFT touch
screen
Thin Film Transistor touch screen, a type of LCD (Liquid Crystal Display)
interactive screen which displays calling information and lets you configure
phone features by touching the glass.
3
Navigation
Press the button's upper rim to scroll up menus/items in the touch screen.
1
3
4
5
7
8
9
15
16
17
18
13
12
2
10
14
6
11

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Item # Label/Name Description
Control /OK

Press the button's lower rim to scroll down.
Press the button's left or right rim to move the cursor left or right (when
editing a contact number for example).
Press
OK
to select a menu/item/option.
4
Voicemail
Retrieves voicemail messages.
5 CONTACTS [Functionality pending]
6
MENU
Accesses the Settings screen.
7
REDIAL
Accesses a list of recently dialed numbers; one can be selected to redial.
8
Kensington lock
Allows locking the device.
9
TRANSFER
Transfers a call.
10
HOLD
Places an active call on hold.
11
Alphanumerical
Keypad
Keys for entering numbers, alphabetical letters and symbols (e.g., colons)
12
Microphone
Allows talking and listening. The network administrator can disable it if
required.
13
SPEAKER
Activates the speaker, allowing a hands-free conversation.
14
HEADSET
Activates a call using an external headset.
15
MUTE
Mutes a call.
16
17
▲ VOL
Increases or decreases the volume of the handset, headset, speaker, ring
tone and call progress tones.
▼ VOL
18
x
Used as a ‘Back’ key to return to the previous screen.
2.2.2 Rear View
The rear view of the phone is shown in the figure below and described in the table below.
Figure 2-2: Rear View
2
3
4
5
1

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Table 2-2: Rear View Description
# Label Description
Handset jack, i.e., port RJ-9, to connect the handset.
RJ-45 port to connect to the Ethernet LAN cable for the LAN connection
(uplink - 10/100/1000 Mbps). If you're using Power over Ethernet (PoE),
power to the phone is supplied from the Ethernet cable (draws power
from either a spare line or a signal line).
RJ-45 port to connect the phone to a PC (10/100/1000 Mbps downlink).
12V DC power jack that connects to the AC power adapter.
Headset jack, i.e., RJ-9 port that connects to an external headset.
1
2
3
4
5

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2.3 Cabling
This section covers how to cable your phone. Use the figure and table below as reference.
Figure 2-3: Cabling
Action Description
Connect the phone's RJ-9 port to the handset cord's longer, straight end.
Connect the handset to the handset cord's short, straight end.
Connect one of the two USB ports to a headset [optional].
Connect the phone’s power socket labelled DC 12V to the connector tip of the AC power
adapter. Connect the two-prong AC adapter directly to the electrical wall outlet.
When the phone powers up, all the LEDs momentarily light up.
Connect the phone's RJ-9 headset jack to a headset [optional]
Connect the RJ-45 PC port to a computer/laptop, using a CAT 5 / 5e straight-through
Ethernet cable
Connect the phone's RJ-45 LAN port to your LAN network (LAN port or LAN switch/router)
using a CAT 5 / 5e Ethernet cable.
Internal use only. FAEs use the port to debug and troubleshoot the phone - after connecting
the AUX (auxiliary) port to a terminal monitor with a serial cable.
1
2
4
5
6
7
3

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Note: If the LAN to which the phone is connected supports Power over Ethernet (PoE), no
AC adapter is required; the phone receives power from the Ethernet network.
Prior to connecting power, refer to the Compliancy and Regulatory Information at
www.audiocodes.com/library.
2.4 Mounting the Phone
The phone can be mounted on a:
Desk (see Section 2.4.1 below)
Wall (see Section 2.4.2)
See also https://www.youtube.com/watch?v=oGe9STB9lFE to assemble the base stand.
2.4.1 Desktop Mounting
This section shows how to mount the phone on a flat surface like a desk.
To mount the phone on a flat surface like a desk:
1. Off-hook the handset (if on-hook) and place the phone upside down, i.e., base-up, on your
desktop.
2. On the phone's stand, identify outer notches.
3. On the phone's base, identify outer rails.
4. Invert the stand and align its outer notches with the base's outer rails.
5. Insert the stand's outer notches into the base's outer rails and slide the notches along the
rails until the stand click-locks into the base.
6. Revert the phone and stand it on the desktop.
2.4.1.1 Routing the Handset Cable
The phone features a groove for routing the handset cable.
2.4.2 Wall Mounting
This section shows how to mount the phone on a wall.
To mount the phone on a wall:
1. Attach the stand of the phone for the purpose of a wall mounting:
a. Detach the base.

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b. Attach it again as you did for a desktop mounting (see Section 2.4.1) only now make
sure that it's flatly aligned to lie flush against the wall, i.e., slide the inner rails of the
phone stand onto the phone base's inner notches.
2. Connect the AC power adapter, LAN and PC/laptop cords.
3. In the wall, drill two horizontal holes at a distance of 3 15/16 inches (100 mm) from one
another, in line with the template.
4. Insert two masonry anchors into the holes if necessary.
5. Thread two screws (not supplied) into the two masonary anchors; ensure that the heads
extend sufficiently (about 3/16 inch or 5 mm from the wall) for the phone stand's keyhole
slots to hang on.
6. Hang the phone stand's keyhole slots on these screws.

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User's and Administrator's Manual 3. Starting up
Version 0.314 19 450HD IP Phone
3 Starting up
After connecting the phone to the network (or resetting it), a start-up wizard opens displaying by
default the ‘Select the language for your device’ screen.
Configure the language of your choice and then configure device settings to match specific
requirements. Only if the phone is restored to default settings will it be necessary to repeat this.
3.1 Configuring Device Settings
The section familiarizes you with the device’s settings. Devices are delivered to customers
configured with their default settings. Customers can customize these settings to suit enterprise
requirements.
To access device settings:
1. In the phone’s idle screen, touch the menu, touch Settings and then Device Settings.
Alternatively, press the hard MENU key on the phone.

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2. Swipe down to navigate to and open a setting. Use the table below as reference.
Table 3-1: Device Functions Settings Descriptions
Setting Description
Login to the Device as Regular User
Display Opens the ‘Display’ screen [Brightness level].
The phone's screen supports different brightness levels. Customers can choose the level that
best suits requirements.
•Sleep
•Screen saver
•
Font size