Grandstream UCM6304 – Enterprise-Grade Unified Communication & Collaboration IP PBX
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Grandstream UCM6304 – Enterprise-Grade Unified Communication & Collaboration IP PBX

Grandstream
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  • The Grandstream UCM6304 is an enterprise-grade IP PBX that supports up to 2,000 users and 300 concurrent calls, offering a unified communication platform with built-in voice, video, meetings, chat, mobility, and advanced security—ideal for scalable business collaboration.

₦1,195,200.00

  • The UCM6304 is a powerful unified communication and collaboration platform designed for mid-to-large businesses. It centralizes voice, video, messaging, conferencing, mobility, and data integrations—all in one secure, scalable IP PBX solution.

    🔹 Key Features (UCM6304):

    • User & Call Capacity:
      Supports up to 2,000 users and 300 concurrent calls
      (Expandable via Grandstream RemoteConnect cloud services)

    • Integrated Collaboration:
      Built-in video conferencing, voice calls, chat, and web meetings accessible through:

      • Wave App for Android, iOS, Chrome, and Firefox

      • SIP endpoints and desktop interfaces

    • Multi-Platform Access:
      Seamlessly connects remote and local teams using Wave App, browsers, or physical IP phones

    • Security:

      • Secure boot

      • Unique device certificates

      • Randomized default passwords

      • TLS and SRTP encryption for secure communications

    • Connectivity:

      • 4 FXS ports (analog phones)

      • 4 FXO ports (PSTN lines)

      • 3 Gigabit auto-sensing RJ45 ports with integrated NAT router and PoE+ support

    • Codec Support:

      • Voice: Full-band Opus, G.722, G.711, G.729, etc.

      • Video: H.264, H.263, H.263+, H.265, VP8

      • Jitter resilience for up to 50% packet loss

    • Remote Access & NAT Traversal:
      Built-in NAT firewall traversal with automated configuration for secure remote communication

    • Third-Party Integration:
      API support for CRM and PMS platforms

    • Cloud & Local Management:

      • Compatible with GDMS (Grandstream Device Management System) for cloud setup and monitoring

      • Supports on-premise control via GWN Manager

    • Operating System:
      Built on Asterisk v16, an open-source telephony platform

    🔸 Technical Specifications (UCM6304):

    Specification Details
    Max Users 2,000
    Max Concurrent Calls 300
    FXS Ports 4
    FXO Ports 4
    LAN Ports 3 x Gigabit RJ45 (auto-sensing with PoE+)
    Audio Codecs Opus, G.722, G.711, G.729, etc.
    Video Codecs H.264, H.263, H.263+, H.265, VP8
    Conferencing Voice, Video, Web (built-in)
    Security TLS/SRTP, secure boot, random default password
    Remote Access NAT traversal, cloud-based or direct via Wave app
    Power Supply Universal power supply (supports PoE+)
    Management Platforms GDMS Cloud, GWN Manager (on-premise)
    Operating System Asterisk v16

🔸 Technical Specifications (UCM6304):

Specification Details
Max Users 2,000
Max Concurrent Calls 300
FXS Ports 4
FXO Ports 4
LAN Ports 3 x Gigabit RJ45 (auto-sensing with PoE+)
Audio Codecs Opus, G.722, G.711, G.729, etc.
Video Codecs H.264, H.263, H.263+, H.265, VP8
Conferencing Voice, Video, Web (built-in)
Security TLS/SRTP, secure boot, random default password
Remote Access NAT traversal, cloud-based or direct via Wave app
Power Supply Universal power supply (supports PoE+)
Management Platforms GDMS Cloud, GWN Manager (on-premise)
Operating System Asterisk v16
Related Product of Grandstream -The award winning Communication Solution provider
SKU: UCM6304 Categories: , Tags: , , , ,
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Grandstream UCM6301 – Technical Specifications

Analog Telephone FXS Ports

  • 1 RJ11 Port
  • All ports have lifeline capability in case of power outage

PSTN Line FXO Ports

  • 1 RJ11 Port
  • All ports have lifeline capability in case of power outage

Network Interfaces

  • Three self-adaptive Gigabit ports (switched, routed or dual mode) with PoE+

NAT Router

  • Yes (supports router mode and switch mode)

Peripheral Ports

  • 1*USB 3.0
  • 1*SD card interface

LED Indicators

  • None

LCD Display

  • 320×240 colour LCD with touch screen for Shortcut Keys and Scroll Bar

Reset Switch

  • Yes, long press for factory reset and short press for reboot

Voice-over-Packet Capabilities

  • LEC with NLP Packetized Voice Protocol Unit
  • 128ms-tail-length carrier grade Line Echo Cancellation
  • Dynamic Jitter Buffer
  • Modem detection & auto-switch to G.711
  • NetEQ
  • FEC 2.0
  • Jitter resilience up to 50% audio packet loss

Voice and Fax Codecs

  • Opus, G.711 A-law/U-law, G.722, G722.1 G722.1C, G.723.1 5.3K/6.3K, G.726-32, G.729A/B, iLBC, GSM; T.38

Video Codecs

  • H.264, H.263, H263+, H.265, VP8

QoS

  • Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS

API

  • Full API available for third-party platform and application integration

Telephony Operating System

  • Based on Asterisk version 16

DTMF Methods

  • In-band audio, RFC2833, and SIP INFO

Provisioning Protocol & Plug-and-Play

  • Mass provisioning using AES encrypted XML configuration file, auto-discovery & auto-provisioning of Grandstream IP endpoints via ZeroConfig (DHCP Option 66 multicast SIP SUBSCRIBE mDNS), eventlist between local and remote trunk

Network Protocols

  • TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, STUN, SRTP, TLS, LDAP, HDLC, HDLC-ETH, PPP, Frame Relay (pending), IPv6, OpenVPN®

Disconnect Methods

  • Busy/Congestion/Howl Tone, Polarity Reversal, Hook Flash Timing, Loop Current Disconnect

Media Encryption

  • SRTP, TLS, HTTPS, SSH, 802.1X

Universal Power Supply

  • Input: 100 ~ 240VAC, 50/60Hz; Output: DC 12V, 1.5A

Dimensions

  • 270mm(L) x 175mm(W) x 36mm(H)

Weight

  • Unit Weight: 715g
  • Package Weight: 1211g

Temperature & Humidity

  • Operating: 32 – 113ºF / 0 ~ 45ºC, Humidity 10 – 90% (non-condensing)
  • Storage: 14 – 140ºF / -10 ~ 60ºC, Humidity 10 – 90% (non-condensing)

Mounting

  • Wall mount & Desktop

Multi-Language Support

  • Web UI: English, Simplified Chinese, Traditional Chinese, Spanish, French, Portuguese, German, Russian, Italian, Polish, Czech, Turkish
  • Customisable IVR/voice prompts: English, Chinese, British English, German, Spanish, Greek, French, Italian, Dutch, Polish, Portuguese, Russian, Swedish, Turkish, Hebrew, Arabic, Nederlands
  • Customisable language pack to support any other languages

Caller ID

  • Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 – BT, NTT

Polarity Reversal/Wink

  • Yes, with enable/disable option upon call establishment and termination

Call Center

  • Multiple configurable call queues, automatic call distribution (ACD) based on agent skills/availability/ work-load, in-queue announcement

Customisable Auto Attendant

  • Up to 5 layers of IVR (Interactive Voice Response) in multiple languages

Maximum Call Capacity

  • Users: 500
  • Concurrent calls (G.711): 75
  • Max concurrent SRTP calls (G.711): 50

Maximum Attendees of Conference Bridges

  • 2 Video Conference rooms and up to 12 parties with 1080p, assuming 4 video feeds + 1 screen sharing (H.264 & G.711)
  • Voice Conference: Up to 75 parties (G.711)

Wave Mobile App

  • Allows Android & iOS users to join UCM-hosted meetings & communicate with other users/solutions registered to the UCM6300

Call Features

  • Call park, call forward, call transfer, call waiting, caller ID, call record, call history, ringtone, IVR, music on hold, call routes, DID, DOD, DND, DISA, ring group, ring simultaneously, time schedule, PIN groups, call queue, pickup group, paging/intercom, voicemail, call wakeup, SCA, BLF, voicemail to email, fax to email, speed dial, call back, dial by name, emergency call, call follow me, blacklist/whitelist, voice conference, video conference, eventlist, feature codes, busy camp-on/ call completion, voice control

Firmware Upgrade

  • Supported by Grandstream Device Management System (GDMS), a zero-touch cloud provisioning and management system, It provides a centralized interface to provision, manage, monitor and troubleshoot Grandstream products

Compliance

  • FCC: Part 15 (CFR 47) Class B, Part 68
  • CE: EN 55032, EN 55035, EN 61000-3-2, EN 61000-3-3, EN 62368-1, ETSI ES 203 021, ITU-T K.21
  • IC: ICES-003, CS-03 Part I Issue 9
  • RCM: AS/NZS CISPR 32, AS/NZS 62368.1, AS/CA S002, AS/CA S003.1/.2
  • Power adapter: UL 60950-1 or UL 62368-1

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