Unified communications platform
Centralises voice, video calling, conferencing, web meetings, mobility, analytics, facility access and intercom workflows.
An on-premise IP PBX for centralising business voice, video, conferencing, meetings, mobility and collaboration, with Wave remote access, secure connectivity, GDMS management and third-party integration.

Centralises voice, video calling, conferencing, web meetings, mobility, analytics, facility access and intercom workflows.
4 × FXO stated; FXS count not supplied.
Pairs with Wave and UCM RemoteConnect for desktop, web and mobile communications plus secure remote connectivity.
The supplied UCM6300 family data identifies built-in conferencing and meetings for desktop, Wave and SIP endpoints.
Review the stated model, capacity and compatibility details for SKU UCM6304. Only the specifications supplied for this exact product are shown.
The UCM6304 is an on-premise unified communications IP PBX for centralising business communications and collaboration.
4 × FXO stated; FXS count not supplied are identified in the exact supplied listing.
No exact user limit was supplied for this SKU; the row only provides UCM6300 family maxima.
No exact concurrent-call limit was supplied for this SKU; confirm the model-specific capacity before deployment.
Yes. Wave and UCM RemoteConnect support desktop, web and mobile collaboration plus secure remote access.
GDMS cloud setup, monitoring and management are listed.
Yes. An API is available for integrations including CRM and PMS platforms.
Secure boot, a unique certificate and a random default password are listed.
The UCM6300 family includes a built-in conferencing and meetings platform; confirm the exact model limits.
DeviceDeal is an authorised Grandstream reseller. The applicable Grandstream manufacturer warranty is subject to Grandstream terms; no exact warranty period was supplied.
(UCM6304)
Centralises voice, video calling, conferencing, web meetings, mobility, analytics, facility access and intercom workflows.
4 × FXO stated; FXS count not supplied.
Pairs with Wave and UCM RemoteConnect for desktop, web and mobile communications plus secure remote connectivity.
The supplied UCM6300 family data identifies built-in conferencing and meetings for desktop, Wave and SIP endpoints.
Secure boot, a unique certificate and random default password are listed.
Three auto-sensing Gigabit RJ45 ports with integrated PoE+ and NAT-router support are identified for the family.
Supports GDMS setup, monitoring and an API for CRM, PMS and other third-party integrations.
The exact title states four FXO ports; the supplied detailed text is family-wide and does not map exact user, call or FXS capacity to this SKU.
Specifications below are organised from the information supplied for SKU UCM6304.

| Exact supplied listing | |
| Model | UCM6304 |
|---|---|
| Analogue ports | 4 × FXO stated; FXS count not supplied |
| User capacity | Not supplied for this exact SKU |
| Concurrent-call capacity | Not supplied for this exact SKU |
| Source note | The exact title states four FXO ports; the supplied detailed text is family-wide and does not map exact user, call or FXS capacity to this SKU. |
| UCM6300 family capabilities | |
| Network | 3 × auto-sensing Gigabit RJ45; integrated PoE+ and NAT support stated |
| Remote users | Wave and UCM RemoteConnect ecosystem |
| Management | GDMS cloud setup, monitoring and management |
| Integration | API for third-party platforms including CRM and PMS |
| Security | Secure boot, unique certificate and random default password |
| Platform | Asterisk version 16 stated |
| Media and resilience | |
| Audio | Full-band Opus |
| Video codecs | H.264, H.263, H.263+, H.265 and VP8 stated |
| Jitter resilience | Up to 50% packet loss stated for the family |
| NAT traversal | Automated secure remote-connection service supported |
| SKU | UCM6304 |
| Barcode # | 6947273703204 |
| Brand | Grandstream |
| Shipping Weight | 1.2000kg |
DeviceDeal is an authorised Grandstream reseller. This product is covered by the applicable Grandstream manufacturer warranty, subject to Grandstream warranty terms, eligibility requirements and product assessment. No exact warranty period was supplied for this SKU.
Please retain your DeviceDeal tax invoice or order record as proof of purchase for any eligible claim or service request.
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