Snom C620 User manual

C620
SIP Wireless Conference Phone
User Manual
EU/UK/AU

i
Copyright, Trademarks, Legal Disclaimers
© 2023 Snom Technology GmbH. All Rights Reserved.
Snom, the names of Snom products, and Snom logos are trademarks owned by
Snom Technology GmbH.
All product specications are subject to change without notication. Snom
Technology GmbH. reserves the right to revise and change this document at any
time, without being obliged to announce such revisions or changes beforehand or
after the fact.
Although due care has been taken in the compilation and presentation of the
information in this document, the data upon which it is based may have changed
in the meantime. Snom therefore disclaims all warranties and liability for the
accurateness, completeness, and currentness of the information published,
except in the case of intention or gross negligence on the part of Snom or where
liability arises due to binding legal provisions.
Important Information
Please read the instructions on safety and disposal and on how to set up and use
the device before using it and also give them to other users to read or inform
those users of their contents. Save this manual and do not give the device to third
parties without it.

Table of contents
Introduction ......................................1
About the C620 SIP Wireless Conference
phone ...................................................... 1
Introduction ......................................2
Parts checklist............................................ 2
Getting started .................................3
Installing the base station....................... 3
Installing the conference phone battery
3
Connecting power to the conference
phone ...................................................... 3
Installing the wireless mic battery ....... 4
Conference phone overview................... 5
Wireless mic overview............................. 7
Base unit overview (front)....................... 8
Status indicators on the conference
phone / wireless mics ........................ 9
Status indicators on the base station.. 11
Idle screen.................................................. 12
Idle mode screen icons........................... 12
Active call screen icons .......................... 12
Using the Main Menu ............................... 13
Main menu items...................................... 13
Input Modes ............................................... 14
Entering numerals, letters, and symbols
14
Conference phone operation ........16
Making calls............................................... 16
Using a wireless microphone during a
call .......................................................... 17
Ending the call........................................... 17
Answering a call....................................... 17
Call waiting................................................. 18
Missed calls ............................................... 18
Redialing a call.......................................... 19
Adjusting call volume.............................. 19
Muting active calls.................................... 19
Temporarily silencing the ringer.......... 20
Putting a call on hold............................... 20
Transferring calls..................................... 21
Making a conference call........................ 23
Setting up a network conference ......... 25
Retrieving messages............................... 25
Paging.......................................................... 27
Directory...........................................28
About the directory .................................. 28
Viewing a directory .................................. 28
Adding a directory entry......................... 29
Reviewing directory entries................... 30
Searching for a directory entry............. 30
Dialing a directory entry......................... 30
Editing a directory entry......................... 31
Deleting a directory entry....................... 31
Deleting all directory entries................. 32
Call History ......................................33
Call history ................................................. 33
Reviewing call history............................. 33
Dialing a call history entry ..................... 34
Saving a call history entry to the
directory................................................ 34
Deleting a call history entry................... 35
Deleting all call history entries............. 35
Speed dial ........................................36
Speed dial................................................... 36
Dialing a speed dial number.................. 36
Adding a speed dial entry....................... 36
Editing a speed dial entry....................... 36
ii

Table of contents
Deleting a speed dial entry .................... 37
Settings.............................................38
Call Features Menu.................................. 38
Call Features menu items...................... 38
Setting Do Not Disturb (DND)................. 39
Setting Call Forwarding.......................... 39
Setting Block Anonymous ...................... 41
Setting Dial as Anonymous.................... 41
Setting Missed Call Alert ........................ 42
Setting Call Waiting alert ........................ 42
To set call waiting alert:.......................... 42
User Settings menu................................. 42
User Settings menu items ..................... 43
Setting Language ..................................... 43
Setting Date and time.............................. 44
Renaming the phone ............................... 45
Setting the display settings ................... 46
Setting the audio settings....................... 47
Registration .....................................50
Registering the conference phone to the
base........................................................ 50
Deregistering the conference phone... 51
Registering the wireless mics to the base
52
Deregistering the wireless mics .......... 53
Register a C52-SP DECT Expansion
Speakerphone ..................................... 54
Deregister a C52-SP DECT Expansion
Speakerphone ..................................... 55
Conference phone battery ............56
Charging ..................................................... 56
Battery disposal........................................ 56
Factory reset the base station......... 57
Troubleshooting..............................58
Important information ...................62
Important safety instructions................ 62
Standards conformance.............62
Technical specications.............63
Important battery information,,63
Disposal ........................................64
Cleaning ........................................64
iii

1
Introduction
About the C620 SIP Wireless Conference phone
The C620 SIP Wireless Conference phone is designed for use in oce settings.
It consists of a base station, conference phone, and two wireless mics, enabling
participants in a meeting room to deliver clear conversation during a conference
call.

2
Introduction
Parts checklist
Your C620 SIP Wireless Conference phone package contains the items shown
below. Save your sales receipt and original packaging in the event warranty
service is necessary.
ErisStation
Conference Phone
SIP
Base Station
Charging Dock
DC 12V 3A round jack
power adapter for
Charging Dock
Ethernet cable
Wireless
Mic x2
Wireless Mic
battery x2 Conference
Phone battery
Wireless Mic
battery door x2
DC 5V 800mA
power adapter for
Base Station
2 (two) screws for
Conference Phone
battery door
Screwdriver
Quick
Installation
Guide
C620

3 4
Getting started
Installing the base station
1. Plug one end of the Ethernet cable into the Ethernet port on the rear of the
base station, and plug the other end of the cable into your network router or
switch.
2. If the base station is not using power from a PoE-capable network router or
switch:
• Connect the provided DC 5V 800mA power adapter to the base station
power jack.
• Plug the power adapter into an electrical outlet that is not controlled by a
wall switch.
IMPORTANT INFORMATION
• Use only the DC 5V 800mA power adapter provided with the product.
To order a replacement power adapter, visit our website at
www.snomamericas.com.
• The power adapter is intended to be correctly oriented in a vertical or oor
mount position. The prongs are not designed to hold the plug in place if it is
plugged into a ceiling, under-the-table, or cabinet outlet.
Installing the conference phone battery
• Risk of explosion! Batteries should not be exposed to excessive
heat such as bright sunlight or re.
• Use only the supplied battery
1. After removing the battery door, plug the battery connector securely into the
socket inside the battery compartment.
2. Place the battery into the battery compartment with the label THIS SIDE UP
facing up.
3. Attach the battery door, and secure it in place with the provided screws.
Connecting power to the conference phone
1. Plug the DC 12V 3A round jack end of the power adapter into the power jack
on the back of the charging dock.
2. Plug the large end of the power adapter into a wall outlet not controlled by a
switch.
3. Place the rear connectors of the conference phone into the charging dock.
• The supplied DC 12V 3A round jack power adapter is designed for use only
with the C620 conference phone. It is not designed to power other devices. Do
not connect the supplied DC 12V 3A round jack power adapter to any other
devices.
Getting started

4
Getting started
• The DC 12V 3A round jack power adapter is intended to be correctly oriented
in a vertical or oor mount position. The prongs are not designed to hold the
plug in place if it is plugged into a ceiling, under-the-table, or cabinet outlet.
Installing the wireless mic battery
1. Plug the battery connector securely into the socket inside the battery
compartment. Insert the battery (with the label THIS SIDE UP facing up) into
the battery compartment.
2. Slide the battery door until it clicks into place.
3. Place the wireless mics into the charging cradles until they are ush.
NOTE: The status indicator on the wireless mic turns orange when charging,
and turns o when the wireless mic is fully charged.
3
AC power cord
12
LAN
VCS752
Wall outlet
Network switch
or router
DC power cable
(with yellow plugs) Ethernet cable
Slots
To Adapter
Adapter
Network switch
or router
Ethernet cable
Slots
Battery X2

5 6
Getting started
Conference phone overview
0
1
6
MNO
9
WX Y Z
3DEF
#
5
JKL
8
TUV
2
AB C
4
GHI
7
PQRS
a » A
Mickey Law | 27.Mar.2019 | Revision 1.5AW | Snom C620 SpeakerBox
illustration scale 100%
3
4
6
11
2
8
5
1
13
14
10
7
9
12
1. Status indicator
• Indicates the system status. See also "Status indicators on the conference
phone / wireless mics" on page 9.
2. Speaker
3. (Hold)
• Press to put a call on hold. See "Putting a call on hold" on page 20.
4. (Cancel)
• Press to cancel an operation
• Press to exit the menu display
• Press to return to the idle screen.

6
Getting started
5. Soft keys
• Press to perform actions as indicated by the on-screen labels.
6. /
• When the phone is idle, press to adjust the ringer volume.
• During a call, press to adjust the listening volume.
7. MUTE ALL
• During a call, press to mute or end mute all microphones in the system.
8. LCD display screen
9. Dial pad keys
• Press to enter numbers or characters.
• See "Entering numerals, letters, and symbols" on page 14.
10. Front microphone
11 (Menu)
• Press to display the Main Menu.
12. (OK)
• Press to select a highlighted menu item
• Press to save an entry or setting in a menu.
13. Navigation keys p q /t u
• Press to scroll up or down while in the menu, directory, or call history.
• Press to move the cursor right or left while entering names or numbers.
• Press to view additional soft key labels.
14 TALK / OFF
• Press to make, answer, or end a call.

7 8
Getting started
Wireless mic overview
1. Microphone
• Functions as an extended microphone of the conference phone during a call.
2. Status indicator
• Indicates the system status. See "Status indicators on the conference phone /
wireless mics" on page 9.
3. (MUTE ALL)
• During a call, press to mute or end mute all microphones in the system.
4. Battery door
5. Charging contacts
a
b
c
d
e

8
Getting started
Base unit overview (front)
3
2
1
1.
Power LED
VoIP LED
SIP
(Power LED)
• See "Status indicators on the base station" on page 11.
2.
Power LED
VoIP LED
SIP
(VoIP LED)
• See "Status indicators on the base station" on page 11.
3. LINK key
• Press to register the conference phone. See "Registration" on page 50.
• Press to page the conference phone and wireless mics.
See "Paging" on page 27.

9 10
Getting started
Status indicators on the conference phone / wireless mics
0
1
6
MNO
9WXYZ
3
DEF
#
5
JKL
8TUV
2
ABC
4
GHI
7PQRS
a » A
Function Status indicator
Power up • Steady Orange for ve seconds.
On a call • Steady Green during a call.
• Steady Red when a call is muted, or if there are new
messages.
Incoming call • Flashes Green quickly when there is an incoming
call.
Charging • Steady Orange while charging
• Steady Orange for ve seconds when charging
completed and you connect the conference phone to
the charging dock.
• O when charging completed.
Low battery • Flashes Orange slowly
Stand by • O when DECT linked; conference phone is idling;
audio mode is not in use.

10
Getting started
Function Status indicator
Registration • Flashes Red and Green alternately when DECT
registration in progress.
• Steady Green for ve seconds when registration
successful.
• Steady Red for ve seconds when registration failed
or canceled.
Paged by base
station
• Flashes Green slowly
DECT Searching
Mode
• Flashes Red slowly when out of range or not
registered.
Reset mode • Steady Orange
CEC battery testing
mode
• Flashes Red
0
1
6
MNO
9
WXY Z
3DEF
#
5
JKL
8
TUV
2
ABC
4
GHI
7
PQRS
a » A
Min. 30 cm (1')
Min. 30 cm (1')
Min. 30 cm (1')

11 12
Getting started
Status indicators on the base station
Power LED
VoIP LED
SIP
Power up • Power LED is Steady Green.
Power down • Power LED is O.
Deregistration • Power and VoIP LEDs ash Green quickly while ready to
deregister devices.
• Power and VoIP LEDs are Steady Green for ve seconds
after the deregistration conrmation has elapsed.
• VoIP LED is O when at least one SIP account is
deregistered.
Registration • Power and VoIP LEDs alternately ash Green slowly
when base negotiating or checking with provisioning
server.
• Power and VoIP LEDs ash Green slowly during device
registration.
• VoIP LED is Steady Green when no SIP account is
unregistered.
Firmware
Upgrade
• Power and VoIP LEDs alternately ash Green quickly
when rmware upgrade or conguration import in
progress.

11 12
Getting started
Idle screen
The Idle screen appears after the phone is connected and configured for your SIP PBX
service. The Idle screen indicates that you have no active or held calls.
From the Idle screen, you can press:
• Dir to view the directories that are available to you.
See "Directory" on page 28.
• Line to select another line (account). When you make a call, the phone will
use the selected line/account.
• Call Log to view the phone’s call history. See "Call History" on page 33.
Note that the default Idle screen soft keys are shown above. Your phone’s soft keys
are programmable and may differ from what is listed here.
Idle mode screen icons
In idle mode, the following screen icons indicate your phone’s current settings.
Icon Status
Signal strengh (1 to 4 bars).
Ringer is OFF, or temporarily off during a call.
Do not disturb is ON.
Call Forward Always is ON.
Battery level of conference phone
(1 to 3 bars, blink for battery empty).
Active call screen icons
During a call, the following screen icons indicate the call’s status.
Icon Status
The conference phone is active.
Microphone is muted on the conference phone and wireless microphones.

13 14
Getting started
Icon Status
1/2 Call counter - more than one call is active.
More than one call is active. Press por qto view another call.
Using the Main Menu
1. Press to show the Main Menu.
2. Press qor pto highlight menu items.
3. Press to select a highlighted menu item.
4. Press or an appropriate soft key to save changes.
5. Press to cancel an operation, exit the menu display or return to the idle
screen.
Main menu items
• Directory (see page 28)
• Call History (see page 33)
• Message (see page 25)
• Call Features (see page 38)
• Status & Settings (see page 42)

14
Getting started
Input Modes
When you dial a phone number, the input mode is always numerals.
When you edit directory entries, the current input mode is indicated by the label of
the middle softkey. For example, ABC for uppercase letters.
To switch to the next input mode, press the middle softkey underneath the display.
ABC = Uppercase letters
123 = Numerals
abc = Lowercase letters
Entering numerals, letters, and symbols
When entering letters and special characters, pause briefly after each character
until the cursor has moved forward so that you won’t overwrite the last character you
entered. Pausing is not necessary when entering numerals.
Numerals:
• When entering numerals, press the respective number key to type the number
printed on the key.
Letters and Symbols:
• To switch between entering uppercase and lowercase letters, press the middle
softkey until its label displays ABC or abc .
• When entering letters, press the alphanumeric key (2-9) with the respective
letter one, two, three, or four times quickly to type the first, second, third, or
fourth letter printed on the key. Pause briefly after each letter.
Example: When entering lowercase letters, press the “2” key once to type an “a”,
twice to type a “b”, and three times to type a “c”.
• When entering special characters and symbols, press the alphanumeric key
(0-9, , #) as many times as needed. Pause briefly after each character or
symbol. To see a list of symbols and which key to press, refer to the tables on the
next page.

15 16
Getting started
Input mode ABC :
1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x
1 ~ ^ ` % ! & - _ + = |
2 A B C Æ À Á Â Ç Œ
3 D E F È É Ê Ë
4 G H I Í Î Ï
5 J K L
6 M N O Ó Ô Ñ
7 P Q R S
8 T U V Ù Ú Û Ü
9 W X Y Z Ÿ
0 space : ; , ?
. @
# ( ) [ ] { } < > / \ #
Examples:
• Press the 1key six times quickly to type the &character.
• Press the 2key eight times quickly to type the Çcharacter.
• Press the 0key once to type the space character.
• Press the key three times quickly to type the character.
Input mode abc :
1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x
1 ~ ^ ` % ! & - _ + = |
2 a b c æ à á â ç œ
3 d e f è é ê ë
4 g h i í î ï
5 j k l
6 m n o ó ô ñ
7 p q r s
8 t u v ù ú û ü
9 w x y z ÿ
0 space : ; , ?
. @
# ( ) [ ] { } < > / \ #

1615 16
Making calls
You can make a call at any time by pressing and then entering the number on
the keypad. When the phone is in idle mode or has calls on hold, you can make a call
by entering the phone number on the keypad and then pressing or Dial to
call the number.
Making a call:
1. Press on the conference phone.
You will hear a dial tone.
2. Enter the phone number on the keypad.
• Press Backspc to delete an incorrect digit.
3. Press Dial or, if the number is valid, the phone dials the number after a short
delay.
When the call is answered, the active call screen appears. The screen displays
the elapsed time as you talk (in hours, minutes, and seconds).
Note that the default active call screen soft keys are shown above. Your phone’s
soft keys are programmable and may differ from what is shown here.
Conference phone operation