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Chat

Chat

Pickup 

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Pickup  groups

Pickup groups

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groups

Videocall

V

id

eoc

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Videocall

Videocall

Videocall

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3-way

conferencing

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3-way  conferencin

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Communicator

Communicator

Communicator

Programmable buttons

Programmable 

buttons

Busy 

line 

field

Busy 

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Busy 

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Presence

Presence

Mobility

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Paralell 

ringing

Unconditional

 

call forwarding

Unconditional 

call forwarding

Unconditional

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Voice  mail

Voice

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Receptionist

 

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Mobility

Calling line

identification

restriction

Calling line

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Calling lin

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PC communicator

Mobile phone

communicator

Mobile phone 

communicator

Mobile phone

communicator

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communica

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Mobile phone 

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Attendant

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Yealink

SIP-T38G

Before you start using the telephone 

Package content: Telephone set, Receiver, 
Twisted receiver cord, Telephone stand, 
Instructions for installation and use. Insert 
the telephone stand into four holes on the 
underside of the telephone set (so that 
the telephone can stand on the desk). This 
telephone set may not be mounted on the 
wall. Attach one end of the receiver cord to 
the receiver and the other end to the socket 
on the telephone marked with receiver. Attach 
the LAN cable (black cable) to the socket 
on the underside of the telephone marked 

"Internet"

 and attach the other end of this 

cable to internet modem, router or switch. 
If you have only one LAN socket available, it 
should be used for connecting the telephone 
and the PC should then be connected to the 
telephone (to the socket on the underside of 
the telephone set marked 

"PC"

).

If your network does not support PoE (Power 
on Ethernet), it is necessary to use a telephone 
feed adaptor (an optional accessory). The 
telephone will then start up and the message 

“Starting…please wait…"

 will appear on 

the display. This may take several minutes 
during which the telephone updates itself and 
it may also restart itself. Then it should be 

possible to sign up to the network. 
Right in the telephone a  list of telephone 
contacts has been made ready for you 
to use. To open the list of contacts for the 
first time you have to enter your assigned 
telephone number and the password. You 
will receive these details on the delivery of 
the service. Enter the telephone's 

Menu

 and, 

using the arrows and OK button, select the 
following options: 

Menu 

 Settings   

Broadsoft settings menu   Broadsoft 

contacts setting

. Here, using again the 

arrows, select 

"Item 1"

 and click 

OK

In the item 

"Password"

 enter the same 

password that you use to sign on the portal  

centrex.gts.cz

. The 

Name

 is your 

telephone number

. Here you may be able 

to adjust the Virtual Switchboard  service 
according to your needs. Help can be accessed 
using the 

"Help"

 button in the right upper 

corner. Other instructions are also accessible 
here in the item 

"To Download"

1. Making a call

Lift the receiver or press the 

"Loudspeaker" 

button and enter the 

required telephone number using the nu-
meric keypad and confirm by pressing the 
context-dependent button 

"Call"

.  To end 

the call, press again the "Loudspeaker" 
button or put down the receiver.

2. Control functions

• Navigation button

 is used for moving 

in the menu. 

Button OK

 is used  to 

confirm the dialling option. There are 
also the following types of buttons on 

the telephone – the context-dependent 
buttons and the programmable buttons. 
The functions of programmable buttons 
are set: 

User line

Business con-

tacts

Personal contacts

. The func-

tions of the context-dependent buttons  
are changed automatically depen-
ding on the operating condition of the 
telephone. 

• 

Menu can be browsed using navigation 
buttons or direct dials as every direct 
dial is numbered. The manual will also 
describe the so-called sequence, mea-
ning initiation of a configuration menu 

using the context-dependent “Menu” 
button and pressing direct options 1-9 
confirmed by the OK button. I.e.: the 
Menu-2-4-1 sequence means pressing 
the MENU, 2, OK, 4, OK, 1, OK buttons. 
You can return to default status using 
the Back-Back-Leave context-based 
button. 

• 

Context-dependent button 

MENU

 - 

enter menu

• 

Button 

RD

 - Redial - dial the last called 

number

• 

Button 

MESSAGE

 - forwards you to 

your voicemail, settings: 

MENU-4-1

Line Keys

Hands-free

Transfer

DSS Keys

Message

Headset

Hold

Navigation

Keys

Conference

Hot Keys

DTMF Keypad

Volume

Adjustment Bar

Redial

Mute

Power

Indication LED

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