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1393756516CooVox-U20 IP Phone system is the second generation of Mini IP Phone System released from ZYCOO, meanwhile it’s the first Mobile IP Phone system with the ability to use the GSM or UMTS (3G) module to connect to the mobile network for data transport.

CooVox-U20 is a next-generation smart IP PBX system designed and optimized for today’s business telecommunication needs.

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 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.

CooVox-U20-A202 2 0
CooVox-U20-A211 1 1

GSM or UMTS (3G) is optional for configuration

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  • Call Features
    Call Back
    Call Forward
    Call Hold
    Call Paging and Intercom
    Call Park
    Call Pickup
    Call Queue
    Call Recording
    Call Routing
    Blind Transfer
    Attended Transfer
    Call Waiting
    Caller ID
    Dial by Name
    Music On Hold/Transfer
    3-Way Conference
    Video Call

    PBX Features
    Black List
    BLF (Busy Lamp Field)
    CDR (Call Detailed Record)
    Conference Room (3 Rooms)
    Call Monitoring
    DID (Direct Inward Dialing Number)
    DISA (Direct Inward System Access)
    Distinctive Ringtone
    DND (Do Not Disturb)
    DNIS (Dialed Number Identification Service)
    Feature Codes
    FOP (Flash Operation Panel) Status Monitoring
    Follow Me
    IVR (Interactive Voice Responses)
    Mobility Extension
    Multi-Language Prompts
    Multi-Language GUI
    One Touch Recording
    Phone Book
    Phone Provisioning
    Pin Set
    Record File Download
    SIP Register with UDP/TCP/TLS
    SIP Trunk
    Skype for SIP
    Smart DID
    Speed Dial
    SRTP (Secure Realtime Transport Protocol)
    T.38 Fax (Pass-through)
    Time Based Rule
    Virtual Fax
    Voicemail & Voicemail to Email

    System Capacities
    10(Max) Concurrent Calls
    Up to 30 IP Phone Registers/Extensions
    Recording: 21,000 mins (.gsm); 3,000 mins (.wav)
    Voicemail: 21,000 mins (.gsm); 3,000 mins (.wav)

    Codecs & Protocols
    Audio Codecs: G.722/G.711-Ulaw/G.711-Alaw/
    Video Codecs: H.261/H.263/H.263+/H.264
    Protocols: SIP (RFC3261)/IAX2
    DTMF: RFC2833/SIP INFO/In-Band

    Network Features
    DDNS Client
    DHCP Server
    IP Assignment (PPPoE/DHCP/Static)
    SNMP v1/v2
    Static Route Table
    Trouble Shooting (Ping/Traceroute)
    PoE (Power over Ethernet)
    VPN Client (N2N/L2TP/PPTP/OpenVPN)
    VPN Server (PPTP/L2TP/OpenVPN, Up to 10 Users)

    Security Features
    Refuse SIP Register DoS
    Refuse Abort Invite DoS
    Refuse SSH Login DoS

    PBX Log
    Web Access Log
    PBX Debug Log

  • Hardware Interfaces
    1 Reset Button
    1 Power Interface
    1 Ethernet Interface
    2 Analog Ports (FXO/FXS)
    1 GSM/UMTS Interface (Onboard)

    Hardware Specifications
    Processor: DualCore 500Mhz DSP
    SDRAM: DDR2 128MB
    Storage: 4GB SD Card
    Power Supply: Input AC 100~240V, 50/60Hz; Output DC 12V/1A

    Working Temperature: 0 ~ 40°C
    Storage Temperature: -20 ~ 55°C
    Humidity: 5 ~ 95% Non-condensing

    *PSTN is not perferctly supported temporarily in UK


ZYCOO are proud to announce our latest iSpeaker model the B20

ZYCOO are proud to announce our

Like the C20, the SIP based audio system iSpeaker B20 utilizes the built-in
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