You’ve got four analogue lines from Etisalat still feeding the office. Accounts needs one for fax. Reception won’t let go of the main published number. The backup line is there because someone remembers a full SIP outage from years ago. Now the client wants an IP PABX, remote users, mobile extensions, and cleaner call routing between Dubai and Abu Dhabi. That’s the point where the Grandstream GXW4104 starts making sense.

It gives you a clean bridge between PSTN and SIP without forcing a full rip-and-replace. Four FXO ports for analogue lines. Dual 10/100 network ports. Support for two SIP server profiles and separate SIP account handling per port. Useful when one branch is still tied to legacy telco lines while the head office has already moved to IP telephony. In JLT, Business Bay, and older commercial buildings around Deira, that mixed setup is still common.

For resellers, this is usually the right size when the project needs four outside lines and no more. Not a big chassis. Not over-specced. Just enough to keep existing PSTN connectivity working with a Grandstream PABX, third-party SIP server, or hosted telephony platform while the customer phases out old line dependency.

Why This Gateway Still Sells in Dubai

A lot of UAE voice projects aren’t greenfield. They’re partial upgrades. A clinic in Sharjah keeps one analogue fax line for insurance forms. A logistics office in Al Quoz holds on to old PSTN lines for gatehouse and dispatch. A law firm in DIFC wants SIP for mobility but won’t risk moving every incoming number on day one. The GXW4104 is built for those jobs.

Instead of disconnecting the analogue service, you bring those lines into the gateway and present them to the SIP side. Your installer or reseller can then route inbound and outbound traffic through the customer’s IP telephony platform with more control. It’s a practical choice for phased migration, branch retention of legacy numbers, and fail-safe calling plans where analogue lines still matter.

Product Overview

The Grandstream GXW4104 is a 4-port FXO VoIP gateway designed to connect analogue PSTN lines to SIP-based telephony systems. Each FXO port accepts a standard telephone company line through RJ11, then passes call traffic into the IP side through SIP registration and routing rules. For smaller offices, branch deployments, retail counters, clinics, schools, and multi-tenant commercial units, that often removes the need to keep old key systems running.

It also fits neatly into mixed Grandstream environments. If the client is already moving toward a PABX system in Dubai, the GXW4104 becomes the handoff point for old telco lines. That matters with Etisalat and du migrations where customers want to test call flow first, then reduce analogue dependence once the SIP side is stable.

Available in Dubai, Abu Dhabi, Sharjah and across UAE, the GXW4104 is usually specified by PABX contractors, IT resellers, and telecom integrators who need a reliable 4-line analogue gateway without moving up to the 8-port GXW4108.

Features That Matter on Real Projects

Four FXO interfaces for analogue line retention
Each of the 4 RJ11 FXO ports can terminate a PSTN line and present it to the SIP network. For customers keeping main DID numbers, backup lines, or fax services, this is the core reason to buy the GXW4104 instead of a pure IP system.

Two SIP server profiles for cleaner failover planning
The unit supports up to 2 SIP server profiles. That gives integrators a cleaner way to plan resilience or staged migration. One server can be primary. One can be secondary. In practice, that helps when the head office PABX sits in Dubai and a second system or backup registrar sits elsewhere.

PSTN lifeline behavior during power failure
This is one of the details buyers usually notice only after something breaks. The GXW4104 supports PSTN failover on power failure, which is useful for keeping basic line continuity available. In sites where reception, security desk, or emergency contact points still depend on analogue access, that’s not a small feature.

T.38 fax support for sites that still need real faxing
Plenty of UAE offices say they’re done with fax. Then procurement, medical admin, customs paperwork, or supplier onboarding proves otherwise. The GXW4104 supports T.38 fax, which makes it easier to keep fax services running when the rest of the voice platform has moved to SIP.

Broad caller ID handling
Grandstream documents support for Bellcore, ETSI, BT, NTT, and DTMF-based caller ID methods. That’s a strong point for export buyers and mixed-region deployments where line presentation behavior can vary.

Management and provisioning options for scale
Local web management is straightforward, but the bigger win for resellers is provisioning flexibility. The GXW4104 supports HTTP, HTTPS, TFTP, XML configuration handling, and broader Grandstream deployment workflows. That’s useful when you’re rolling multiple gateways for a hotel group, school network, or branch estate instead of configuring one unit at a time.

Platform Compatibility

The GXW4104 is designed for SIP environments, which means it can sit behind Grandstream UCM systems as well as other SIP-compliant IP PABX platforms and hosted voice services. For UAE resellers, the common project is simple: retain analogue PSTN lines from Etisalat or du, then map them into an office IP telephony setup for inbound call routing, outbound fallback, or number preservation.

Technical Specifications

GXW4104 vs GXW4108

Most buyers land on the GXW4104 because the project starts with 2 to 4 analogue lines. Reception. Fax. Backup trunk. Maybe one line for a door station or a branch number that’s been printed on invoices for years. That’s the sensible use case. Once the line count moves past four, though, the maths changes and the GXW4108 usually makes more sense.

What Comes in the Box

The standard package is straightforward. Gateway unit, power supply, and documentation set. For most UAE projects, the actual order includes more than the box because the site still needs patching, line tagging, cabinet layout, and PABX-side setup.

Often Bundled With This Gateway

Resellers don’t usually sell this unit on its own. They sell a voice migration job. The GXW4104 typically goes out with the main call control platform, a batch of desk phones, and support services around line cutover. That’s especially true for Abu Dhabi branch upgrades, DMCC offices moving to softphones, and small hotel sites keeping a few analogue trunks live for backup.

Where It Fits by Industry

This gateway sells well in hospitality, healthcare admin, legal offices, schools, and trading companies. Not because those buyers love old phone lines. Because they still have a few that can’t disappear yet. Hotels keep analogue trunks for fallback and service areas. Clinics still run fax-dependent admin flows. Legal firms in DIFC often want a careful transition, not a full overnight switch. Schools and training centres sometimes hold a main PSTN number while the internal staff side moves to SIP handsets and mobile extensions.

For a contractor, the GXW4104 is an easy add when the customer says they want the new phone system but also says “leave these four numbers exactly where they are for now.” That sentence alone sells a lot of gateways.

Grandstream GXW4104 UAE Supply

Grandstream GXW4104 UAE demand usually comes from migration projects rather than greenfield offices. Buyers in Dubai ask for it when Business Bay or JLT offices are moving from analogue trunks to SIP in phases. Abu Dhabi buyers usually bring it into branch voice projects, government-related offices, and multi-site admin environments where published PSTN numbers need to stay active during the changeover.

Vector Dubai supplies across Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah, Fujairah, and Umm Al Quwain, including free-zone offices in DMCC, DIFC, JLT, Business Bay, DAFZA, and JAFZA. For telecom contractors handling Etisalat and du line retention, that local availability matters more than fancy marketing copy.

FOB Dubai Export for Africa, GCC, and South Asia

This model also moves well on export jobs where legacy PSTN is still part of the voice design. Telecom resellers in Nigeria and Uganda buy it for branch telephony upgrades, while GCC integrators in Oman and Qatar use it for smaller analogue-retention projects. South Asia buyers in Pakistan and Bangladesh often ask for project quantities when replacing ageing key systems with SIP-based PABX platforms. FOB Dubai pricing is available for trade buyers, project quantities, and mixed voice orders that include gateways, PABX hardware, and endpoints. Export quotes are handled on WhatsApp for faster line count checks and shipping coordination.

FAQ

Can the GXW4104 connect my old Etisalat or du analogue lines to a SIP PABX?

Yes. That’s the main job of this model. It takes up to 4 analogue PSTN lines through FXO ports and presents them to a SIP-based phone system, which is useful when the customer wants to keep existing numbers during migration.

Will it work with Grandstream UCM and other SIP phone systems?

Yes. It is designed for SIP environments and is commonly deployed with Grandstream UCM platforms as well as other SIP-compliant IP PABX systems, depending on the call routing design.

I only have 3 analogue lines today. Should I still buy the GXW4104?

Usually, yes. If the project needs 1 to 4 PSTN lines, the GXW4104 is the right size. If you expect 5 or more live analogue lines, go to the GXW4108 instead so you don’t outgrow the gateway straight away.

Does it support fax lines?

Yes. Grandstream lists T.38 fax support, which is why this model still appears in clinics, admin departments, and trading offices that haven’t fully removed fax workflows.

Is reseller pricing available for project quantities?

Yes. Dubai stock and FOB Dubai pricing are available for registered IT companies, telecom contractors, and export buyers ordering for branch rollouts or full voice projects.

Can I order the GXW4104 for a project in Nigeria, Uganda, Oman, or Pakistan?

Yes. Vector Dubai supplies export orders for Africa, GCC, and South Asia. Share the line count, target country, and whether you also need the main PABX or handsets, and the quote can be built around the full job.