You’ve got an older phone system on PRI. The carrier circuit is still live. The business doesn’t want a full rip-and-replace this quarter. That’s common in Dubai. A hotel in Deira keeps its front desk and billing tied to a legacy PABX. A trading office in Business Bay moves new users to SIP but keeps the old digital trunk for continuity. A contractor in Abu Dhabi wants to modernise branch by branch, not all in one weekend. The Grandstream GXW4504 is built for that middle ground.

This is a 4-port digital VoIP gateway with software-configurable E1, T1, and J1 interfaces. It gives you a practical path between legacy trunk infrastructure and SIP-based telephony. Up to 120 simultaneous calls. Support for PRI, SS7, and MFC R2. SIP over UDP, TCP, and TLS. T.38 fax relay. Dual Gigabit network ports. In plain terms, it lets telecom integrators and PABX resellers keep existing carrier-side connectivity in place while moving the customer toward IP voice at a pace the project budget can handle.

For UAE projects, that matters more than people admit. A lot of offices in DIFC, DMCC, JLT, and Sharjah industrial zones still have voice infrastructure that grew over 8 to 12 years in layers. One department on SIP. One floor still on older cards. Fax still needed for purchase orders. Call routing rules nobody wants to touch during business hours. The GXW4504 UAE search isn’t usually about a greenfield build. It’s about keeping the phones up while the migration happens.

What the Grandstream GXW4504 Actually Solves

The GXW4504 sits between legacy digital lines and an IP voice platform. On one side, you’ve got E1, T1, or J1 trunk interfaces. On the other, SIP registration and IP routing into a modern PABX or softswitch. That makes it useful when a customer wants to retain a carrier PRI, preserve numbering plans, or keep an older site-to-site voice design running while new IP endpoints are phased in. It also suits export buyers handling older branch estates in Africa where digital trunk environments are still common in hotels, banks, education groups, and regional telecom projects.

grandstream gxw4504 4 port pri gateway

In Dubai, it’s often bundled into staged telephony migrations. A customer may keep the digital handoff from the telco while moving users onto a newer IP system. Another common case: replacing an ageing gateway that has become a single point of failure. If the site already runs Grandstream PABX equipment or is moving toward SIP trunking, the GXW4504 becomes the bridge that keeps the cutover controlled rather than rushed.

Features That Matter on Real Projects

4 software-configurable digital spans. One chassis handles four E1, T1, or J1 interfaces, which gives integrators flexibility across different carriers and countries. Useful when you don’t want different gateway models for different project types.

Up to 120 concurrent calls. Enough headroom for medium and larger voice environments such as hotels, larger offices, branch clusters, and campus-style deployments. It’s a cleaner fit than stacking lower-capacity devices just to hit call volume targets.

PRI, SS7, and MFC R2 support. That’s one of the reasons this model stands out in mixed legacy environments. Not every gateway page in the UAE market explains that clearly, but it matters a lot when the job is outside a standard PRI-only setup.

Secure SIP and voice transport. SIP over TLS, plus SRTP for media security. For legal offices in DIFC, healthcare admin sites, and government-related environments, that helps when the customer wants the SIP side protected properly instead of running voice unencrypted on the LAN.

T.38 fax relay. Still relevant. A lot of procurement teams assume fax is gone until the accounting team proves otherwise. Construction, clinics, logistics, and some public-sector workflows still depend on it.

Dual Gigabit network ports. The unit includes two self-adaptive Gigabit interfaces and can work in switched or routed mode. That gives network teams more flexibility in how the gateway is placed inside the voice VLAN design.

There are also details that don’t always make it onto competitor product pages. USB 3.0 ports and an SD card slot. Local LCD status display. Support for DOD-related handling and trunk/channel grouping features that become useful on more complex voice routing jobs. Those aren’t headline specs for a casual buyer. For a PABX engineer dealing with number mapping, DID presentation, or interop cleanup, they matter.

And because voice doesn’t live on an island, this gateway fits naturally into broader telecom support work. Many customers pairing a GXW4504 also need ongoing monitoring, call flow changes, SIP troubleshooting, or branch expansion support. That’s where linking it to PABX support in Dubai or long-term IT AMC support makes commercial sense, especially for sites with mixed voice and data teams.

Specifications

Platform Compatibility

The GXW4504 is designed for SIP-based telephony environments where digital trunks still need to be preserved. It fits with Grandstream PABX deployments, SIP-capable IP-PABX platforms, hosted voice environments that accept gateway registration, and migration projects involving legacy branch phone systems. It’s also relevant where Etisalat or du service structures need to be retained during telephony transitions in Dubai and Abu Dhabi.

For resellers, the simplest way to position it is this: if the customer still has E1, T1, or J1 coming into the site but wants SIP call control internally, the GXW4504 is the bridge. It’s available for supply in Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah, Fujairah, and Umm Al Quwain, and it’s especially useful on upgrade jobs where downtime windows are tight and the numbering plan cannot be rebuilt from scratch.

Which GXW4500 Model Fits the Job

Not every site needs the GXW4504. Some do. Some don’t. The right model depends on how many digital spans are live today and how much expansion the customer expects over the next 12 to 24 months. For a single carrier handoff and lighter traffic, the GXW4501 is usually enough. For two-span sites, the GXW4502 keeps cost tighter. The GXW4504 makes more sense where the customer has multiple trunks, branch aggregation, hotel voice traffic, or wants spare capacity instead of running the gateway flat out.

What’s in the Box

The standard package includes the Grandstream GXW4504 gateway, power adapter, rack ears for mounting, and the usual documentation. For most Dubai server room and telecom cabinet deployments, that’s enough to get the hardware in place. The rest depends on the project design. Existing PRI patching, SIP PABX configuration, VLAN planning, and dial-plan work still need to be handled properly.

Often Bundled With This Product

Where It Fits in UAE Projects

This gateway sells well into hospitality, trading, education, and multi-branch commercial offices. Hotels are a strong example. They often keep older call accounting or room telephony structures in place longer than expected, even when the admin office wants SIP phones and newer call routing. The GXW4504 lets that transition happen without dropping the live digital trunk side too early.

It also suits legal and finance offices in DIFC and Business Bay where downtime is expensive and the voice design has grown over years. A clean migration path matters. Same for older campuses in Sharjah and Abu Dhabi where a digital telco handoff still exists but new departments are moving toward IP extensions. The box is small compared with the disruption it prevents.

For customers comparing Grandstream GXW4504 Abu Dhabi and Grandstream GXW4504 UAE supply options, the practical question isn’t just price. It’s whether the seller understands PRI-to-SIP migration, numbering continuity, fax behaviour, and how to keep service stable while the cutover is happening. That’s usually what decides whether the project goes smoothly.

Abu Dhabi and UAE Supply

Vector Dubai supplies the Grandstream GXW4504 across Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah, Fujairah, and Umm Al Quwain. Free zone customers in DMCC, JLT, DIFC, DAFZA, and JAFZA are covered too. For PABX contractors supporting branch clients across multiple emirates, that matters. One source. One invoice trail. Easier project planning.

If the requirement includes telephony migration rather than box supply only, the GXW4504 can be positioned alongside our broader PABX Abu Dhabi and UAE telephony portfolio. That helps procurement teams standardise support instead of buying a gateway from one source and the wider voice stack from another.

Export to Africa, GCC, and South Asia

The GXW4504 moves well on export projects where digital trunk infrastructure is still active and the buyer wants a controlled path to SIP. Telecom resellers in Nigeria and Ghana use gateways like this for hotel and enterprise migrations, while Uganda and Mozambique buyers often combine them with IP-PABX hardware in one shipment. GCC orders also come in from Oman, Qatar, and Bahrain for branch refresh work where legacy telco handoffs remain in service. South Asia demand usually comes from project importers needing FOB Dubai pricing, faster consolidation, and predictable lead times for mixed telephony orders. Export quotes and project quantities are available on WhatsApp.

About Vector Dubai — Authorised Grandstream Distributor

Frequently Asked Questions

Can the GXW4504 connect an existing PRI line to a SIP PABX?

Yes. That’s the main job it’s built for. It bridges E1, T1, or J1 digital trunks into a SIP-based voice environment, which is why it’s commonly used during PABX migration projects in Dubai and Abu Dhabi.

Will it work with Etisalat or du voice environments?

It can be used in projects involving Etisalat or du connectivity where the customer is preserving a digital trunk structure while integrating with SIP call control. Final compatibility depends on the exact service handoff and PABX design.

Is GXW4504 the right model for a hotel or larger office?

Usually yes if the site has multiple digital spans or needs more call capacity. The GXW4504 supports up to 120 simultaneous calls and 4 digital ports, which gives more room than the smaller GXW4501 and GXW4502 models.

Do you keep Grandstream GXW4504 in stock in Dubai?

Stock status changes with project demand, but Dubai warehouse supply and bulk quantity handling are available. For current availability and lead time, WhatsApp +971 52 521 9305.

Can I get reseller pricing for 5 or 10 units?

Yes. Reseller and project pricing is available for registered IT companies, telecom integrators, and export buyers. Larger quantities are quoted on FOB Dubai terms when required.

Can you export this model for a project in Africa or GCC?

Yes. The GXW4504 is supplied for export to Africa, GCC, and South Asia, with FOB Dubai pricing available for project orders. Buyers commonly combine gateways, PABX hardware, and IP phones in one shipment.