

Contents
FCC WARNING .......................................................................................................................................... 1
FCC Caution .............................................................................................................................................. 1
Overview................................................................................................................................................... 2
Product Introduction ............................................................................................................................ 2
Specifications ....................................................................................................................................... 3
Main Features ...................................................................................................................................... 3
Compatible IP PBX Models ................................................................................................................... 3
Installation ................................................................................................................................................ 5
Hardware Installation ........................................................................................................................... 5
EX16S Discovery ................................................................................................................................... 6
Auto Provisioning ................................................................................................................................. 6
Status Monitoring on CooVox V2 ......................................................................................................... 8
Maintenance ............................................................................................................................................ 9
Access Web GUI ................................................................................................................................... 9
System Status and Port Status ........................................................................................................... 10
System Information ....................................................................................................................... 10
Network Info .................................................................................................................................. 11
System Resources .......................................................................................................................... 11
FXS Port Status ............................................................................................................................... 12
Reports ............................................................................................................................................... 13
Call Logs ......................................................................................................................................... 13
System Logs ................................................................................................................................... 13
Feature Codes .................................................................................................................................... 14
Global Feature Codes ..................................................................................................................... 14
EX16S Administration Codes .......................................................................................................... 17
Administration ................................................................................................................................... 18
Network Settings ........................................................................................................................... 18
Services .......................................................................................................................................... 19
Change Password ........................................................................................................................... 19
Reset & Reboot .............................................................................................................................. 20
Upgrade ......................................................................................................................................... 20
Diagnostics ..................................................................................................................................... 21

FCC WARNING
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
The user manual or instruction manual for an intentional or unintentional radiator shall caution
the user that changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment. In cases where the manual
is provided only in a form other than paper, such as on a computer disk or over the Internet, the
information required by this section may be included in the manual in that alternative form,
provided the user can reasonably be expected to have the capability to access information in that
form.
For a Class B digital device or peripheral, the instructions furnished the user shall include the
following or similar statement, placed in a prominent location in the text of the manual.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-- Consult the dealer or an experienced radio/TV technician for help.
FCC Caution
Any changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.
Page 1 Copyright ©ZYCOO All Rights Reserved v2.1.6

Overview
Product Introduction
CooVox EX16S (hereafter referred to EX16S) is an FXS port expansion box especially designed for ZYCOO CooVox
V2 series IPPBX systems. Each box provides 16 FXS channels for connecting analog phones and fax machines to
your CooVox V2 IPPBX system as extensions through your LAN.
EX16S Front Panel View
EX16S Rear Panel View
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Specifications
1GHz dual-core A7 processor
1 x Console port (Baud rate 115200)
G.722/G.711-Ulaw/G.711-Alaw/G.726/G.729/GSM/SPEEX
Desktop and rack-mountable
EX16S Specification Table
Main Features
Zero-config: Zero configurations required on the EX16S boxes, they are all auto-provisioned
and managed by ZYCOO CooVox V2 series IPPBXs.
Feature rich and ease of use: Inherits nearly all innovative VoIP call features from the
CooVox V2 series IPPBX system.
Robust and reliable: 1GHz A7 processor on board guarantees superior user experience.
Expandable: Each EX16S connects to CooVox V2 system through your LAN, you can expand
FXS ports by deploy several EX16S boxes in your LAN till fulfill all analog phones and Fax
machines you have.
Compatible IP PBX Models
EX16S is specially designed for ZYCOO CooVox V2 series IPPBXs. It is compatible with the below
IPPBX models:
CooVox-U20 V2 (U20-2BRI included)
CooVox-U50 V2
CooVox-U60 V2
CooVox-U80
CooVox-U100 V2
For a fully loaded deployment, each FXS port on the EX16S requires an extension number from
the CooVox V2 IPPBX system, so how many EX16S boxes can be used with the CooVox V2 IPPBX
depending on the extension numbers the IPPBX can support. Recommended deployment as
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below:
CooVox-U20 V2 recommended EX16S deployment: 1 unit
CooVox-U50 V2 recommended EX16S deployment: 1 to 6 units
CooVox-U60 V2 recommended EX16S deployment: 1 to 12 units
CooVox-U80 recommended EX16S deployment: 1 to 12 units
CooVox-U100 V2 recommended EX16S deployment: 1 to 31 units
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Notice
The CooVox V2 IPPBX firmware should be upgraded to v2.1.6 in order to cooperate with the EX16S
expansion boxes.
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Installation
Hardware Installation
Open the packaging of the EX16S box and find the Quick Installation Guide, follow the
instructions to install the EX16S box properly in your local network.
Once the EX16S device has been installed in the LAN and powered up, you may check if its ready
for configurations by the LED indicators, please refer to the LED indication table below:
LED Indication Reference Table
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Notice
1. Please do not use a third party power adaptor to power EX16S.
2. You may install the EX16S device on desktop or mount it on to the rack.
3. If you don’t have a DHCP server in your local network, you may use an analog phone to first
change the WAN port to static IP mode by feature code **14 and then assign an available IP
to the WAN port of the device by feature code **15.
4. If you are installing 2 or more units of EX16S in your local network please do not use LAN port,
as LAN port has a static IP 192.168.10.100 which may cause IP conflict.
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EX16S Discovery
Once you have connected the EX16S box to your local network, you may discover it from the
CooVox V2 series IPPBX Web GUI.
Please open the CooVox V2 IPPBX Web GUI and navigate to Advanced -> EX-Box Provision page.
Click on the Discover button to start discovering all the EX16S boxes in you LAN. You may also
click on Manual Add button to add one EX16S at a time by specifying its IP address.
The discovered devices will be listed on this page.
In the above diagram, you can see a newly discovered EX16S box and its detailed information.
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Notice
Only by deploying the CooVox V2 IPPBX and EX16S expansion boxes in the same local network,
and configured with IP addresses within the same network segment, so they can work together.
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Auto Provisioning
Each EX16S box can be configured with in a minute. Please click on the Edit button of a newly
discovered EX16S device to configure it.
Page 6 Copyright ©ZYCOO All Rights Reserved v2.1.6