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ZYCOO CooVox Hybrid U20 IP PBX


Our Price: £231.00 (277.20 inc VAT)

Product Code: ZYC-U20

Power Adaptor:


Choose your U20 Modules:

Optional onboard GSM/UMTS Module:


The CooVox-U20 is an affordable, scalable, interoperable, secure and reliable solution which not only provides traditional PBX functions such as automated attendant and voicemail, but also has many advanced features including remote extensions, remote office connection, conference bridge, call recording, call detail records (CDR), automatic call distribution (ACD), unified messaging (voice mail to email), and many more features.

There are three models in the CooVox U20 Range

  • U20-A211 - 1 x FXO and 1 x FXS
  • U20-A202 - 2 x FXO
  • U20-A220 - 2 x FXS

All models support optional 3G Module


Coovox u20 datasheet Download Zycoo CooVox U20 Datasheet
CooVox user guide Download CooVox Administration Guide


  • PBX Features
  • Black List
  • BLF (Busy Lamp Field)
  • CDR (Call Detailed Record)
  • Conference Room(3)
  • DID (Direct Inward Dialing Number)
  • DISA (Direct Inward System Access)
  • Distinctive Ringtone
  • DND
  • DNIS
  • Feature Codes
  • Flash Operation Panel
  • Follow Me
  • IP Phone Provisioning
  • IVR (Interactive Voice Responses)
  • Mobility Extension
  • Multi-language System Prompt
  • One Touch Record
  • Phone Book
  • Phone Provisioning
  • Pin Sets
  • Record Files Download
  • Ringgroups
  • SIP Register with UDP/TCP/TLS
  • SIP Trunks
  • Skype for SIP
  • Smart DID
  • Speed Dial
  • Spy
  • SRTP
  • System Log
  • T.38 FAX(Pass-through)
  • Time based rules
  • Virtual FAX
  • Voicemail and VoiceMail to EMail

Call Features

  • Call Back
  • Call Forward
  • Call Group
  • Call Hold
  • Call Paging and Intercom
  • Call Park
  • Call Pickup
  • Call Queue
  • Call Recording
  • Call Routing
  • Blind Transfer
  • Attend Transfer
  • Call Waiting
  • Caller ID
  • Dial by Name
  • Music on Hold / Transfer
  • Three-Way Conference
  • Video Calls

Network Features

  • DDNS Client
  • DHCP Server
  • IEEE802.1Q of VLAN
  • IP Assignment (PPPoE / DHCP / Static)
  • IPv4 IPv6
  • SNMP v1/v2
  • Static Route Table by manually
  • Trouble Shooting (Ping, Traceroute)
  • VPN Client (Support N2N / L2TP/PPTP/OpenVPN)
  • VPN server(PPTP/L2TP/OPENVPN server 10)

Security Features

  • Refuse SIP Register DoS
  • Refuse Abort Invite Dos
  • Refuse SSH Login DoS
  • FireWall
  • SRTP

Log Capabilities

  • Asterisk Debug Log
  • Phone Register Log
  • SSH Log
  • System Log
  • Web Access Log


  • Working Temperature: -10 degree C -45 degree C
  • Storage Temperature: -30 degree C -65 degree C
  • Humidity: 10-80% No Dew

Hardware Specification

  • 1 Reset Button
  • 1 Power Interface
  • 1 Ethernet Interface
  • 2 Analog Ports (FXO/FXS)
  • 1 GSM Antenna Interface
  • 1 UMTS Interface for 3G Data (onboard)
  • LED indication
  • CPU: DualCore 500Mhz DSP
  • Storage: 4GB (Default SD Card )
  • SDRAM: 128MB DDR2
  • Power Supply:
  • Input: 100~240 Vac
  • Output: DC 12V 1.0 A

Zycoo offer a range of Free Add-ons for CooVox including:


CooPanel is a windows based multi-function operator panel solution and is designed to allow operators and receptionists management of internal telephone calls in SMB environments.
It is developed as a plug-in for CooVox IP phone systems, which will show you detailed IP PBX activities, extensions status, history calls and more. Down;oad FREE from Zycoo website:


CooCall is a dedicated Zycoo softphone for use on Coovox systems and can be downloaded FREE from Zycoo's website. This enables even greater mobility for Zycoo users allowing you to make and recieve calls wherever you are.