CommTech CT20 User manual

CT20 VoIP PBX
Installation Guide
Version: 1.0
Date: 2016.11.22

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Content
Welcome.............................................................................................................................................................................. 3
Before You Start................................................................................................................................................................ 4
Package Contents.......................................................................................................................................4
Hardware Overview.....................................................................................................................................4
LED Indicators and Ports.............................................................................................................................5
Installation.......................................................................................................................................................................... 7
Safety Disclaimers and Installation Warnings...............................................................................................7
Module Installation......................................................................................................................................7
Desktop Installation...................................................................................................................................10
Connecting the Equipment........................................................................................................................................... 11
Getting Started with the Configuration..................................................................................................................... 12

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Welcome
Thank you for choosing CommTech CT20 IP PBX. CommTech CT20 is a stand-alone telephone
system offering an unrivalled range of features to small business with less than 20 users. It supports
10 concurrent calls and various combinations of telephony ports including FXS, PSTN, ISDN BRI,
and GSM/3G.
This guide describes how to install the CT20 and how to log in the web GUI to configure the system.
Once you complete the installation, refer to the CommTech CT-Series Administrator Guide for
instructions on how to perform configurations on the system.
Related Documents
This Installation Guide only explains the installation of CommTech CT20 IPPBX. For more
functionality and advanced settings, please refer to the relative documents as below:
Document
Description
CommTech CT-Series Administrator
Guide
The administrator could refer to this manual for
instructions on how to configure, operate, monitor,
and maintain the CommTech CT20 IPPBX.
CommTech CT-Series Extension User
Guide
Users could refer to the guide for instructions on how
to login the user portal, and how to configure their
accounts, listen to call recordings, check voicemail
messages, etc.

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Before You Start
Before you begin to install the CT20 IP Phone System, please check the package contents to verify
that you have received the items below. If there is any problem, please contact your provider.
Package Contents
1* CT20 PBX
1* Power Adapter
1* Network Cable
2* Telephony Line
4* Rubber Feet
1* Warranty Card
1* Quick Installation Guide
Hardware Overview
Front Panel
Power Indicator
System Status Port Status
WAN Status
LAN Status
Rear Panel
Power
RJ11 Port WAN LAN Reset
ANT
TF Slot

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LED Indicators and Ports
LED Indicators
LED
Indication
Status
Description
POWER
Power status
On
The power is switched on
Off
The power is switched off
System
System status
Blinking
The system is running properly
Static/Off
The system goes wrong
WAN
WAN status
Static
Linked normally.
Blinking
In communication.
Off
Off-line.
LAN
LAN status
Static
Linked normally.
Blinking
In communication.
Off
Off-line.
Port Status
FXS
Green light
Static: The port is idle.
Blinking: There is an ongoing call on the
port.
GSM/3G
Red light
Static: the trunk is idle.
Blinking slowly: there is no SIM card
inserted.
Blinking rapidly: the trunk is in use.
BRI
Orange light
Blinking slowly: the BRI line is
disconnected.
Static: the BRI line is connected or in
use.
FXO
Red light
Blinking slowly: no PSTN line is
connected
to the port.
Static: the PSTN line is idle.
Blinking rapidly: the PSTN line is busy.
Port Description
Ports
Description
RJ11 Port
FXO port (red light): for the connection of PSTN lines or FXS ports of traditional
PBX.
FXS port (green light): for the connection of analog phones.
BRI port (orange light): for the connection of ISDN BRI lines.
Note: the sequence number of the ports corresponds to that of the Indicator
lights in the front panel. (I.e. the LED lights in the front indicate the connection
status of the corresponding ports at the front panel.)
ANT
Rotate the antenna into the Antenna Socket.

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TF Slot
Insert TF card.
Ethernet Port
CommTech CT20 provides two 10/100M adaptive RJ45 Ethernet ports. There
are 3 Ethernet modes for the system. The default mode is “Single”.
Single: LAN port interface will be used for uplink connection. WAN port is
disabled.
Bridge: LAN port interface will be used for uplink connection. WAN port
interface will be used as bridge for PC connection.
Dual: both ports can be used for uplink connection.
Reset Button
Press and hold for 10 seconds to restore the factory defaults.
Power Inlet
Connect the supplied power supply to the port.

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Installation
This chapter shows you how to install CommTech CT20 IP PBX.
Safety Disclaimers and Installation Warnings
To avoid unexpected accident, personal injury or device damage, please read the safety disclaimers
and installation warnings.
Power
Use only the power adapter provided with the IP PBX.
Keep the power off during the installation.
Make sure that the supply voltage matches the specifications indicated on the back panel of the
device.
To avoid the electric accident, do not open or remove the cover of IP PBX when it is working as
well as off the power.
Before cleaning the device, cut off the power supply.
Environment
Install the CommTech CT20 IP PBX in a location that is clean, free from vibration, electric shock, and
temperature/humidity extremes. The operating temperature should be kept below 104°F (40°C).
Module Installation
CommTech CT20 supports installing up to 2 modules. The optional modules are as below:
S2 Module
O2 Module
B2 Module
SO Module
GSM Module
3G Module
NOTE
Before installing themodule, please check if the module is clean and intact.

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STEP 1 Loosen the screws on the bottom of the device and remove the upper cover.
STEP 2 Insert themodule to the Module Slot.
STEP 3 Insert a SIM card on the GSM/3G module following the instructions. Skip this step if no
GSM/3G module installed.

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STEP 4 Close the cover and fix the screws.
STEP 5 Rotate the antenna into the Antenna Socket. Skipthis step if no GSM/3G module installed.

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Desktop Installation
WARNING
Please set 5~10cm gaps around the device for air circulation.
Please avoid any heavy thing placed on the device.
STEP 1 Place the IP PBX on a steady platform.
STEP 2 Remove the adhesive backing paper from the rubber feet.
STEP 3 Turn over the device and attach the supplied rubber feet to the recessed areas on the
bottom at each corner of the device.

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Connecting the Equipment
STEP 1 Connect one end of a network cable to the LAN port of CommTech CT20, and the other
end to any port of your company’s LAN switch/router.
STEP 2 Plug the provided power adapter into the power jack on CT20 and the other end to a
standard electrical wall socket. Wait for the system to boot up till the SYSTEM LED starts
to blink.
STEP 3 Connect the telephony line to the RJ11 port of the IP PBX.
RJ11 Port
Description
FXS
Connect one end of a RJ11 phone cable to the port. Connect the other end to
the analog phone or fax machine.
FXO
Connect an RJ11cable to the FXO port. Connect the other end of the cable to a
PSTN line.
BRI
Connect the cable provided by the ISDN BRI provider to the BRI port. Connect
the other end of the cable to the ISDN provider equipment.
NOTE
Connect BRI/PSTN/analog phone/fax machine to the corresponding port based on the color of port
indicator.

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Getting Started with the Configuration
CommTech CT20 IP PhoneSystem provides web-based configuration interface for administrator. The
administrator can manage the device by logging in the Web interface.
Access path: https://192.168.5.150:8088
User Name: admin
Password: password
STEP 1 Connect your PC to the same network as CommTech CT20.
STEP 2 Start the browser on PC. In the address bar, enter the IP address, click “Enter”key and
then you can see the web GUI login page shows as below.
STEP 3 For the detailed configurations of extensions, trunks and other system settings, please
refer to the manual CommTech CT-Series Administrator Manual.
NOTE
After saving the changes, remember to click the “Apply” button at the top-right corner to make the
changes take effect.
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