That is why this page exists. The Fanvil i31S is now an EOL model, discontinued by Fanvil since 22 December 2025, but many UAE projects still search for the exact model for maintenance, replacement matching, tender records, FM handover documents, and old villa or office intercom installations. Vector Digital Systems handles i31S enquiries from Dubai with the same project method we use for active Fanvil lines: confirm the requirement, check availability, stage the unit where supply is possible, and advise the installer before dispatch.

The i31S was built as a SIP video door phone for entrance calling, access control, and visitor verification on IP-based PABX systems. It fits villa gates, warehouse entrances, office reception doors, staff-only back doors, and small building entrances where the site wants a door station that calls an extension instead of a separate intercom controller.

What the Fanvil i31S is

The Fanvil i31S is a SIP video door phone with a numeric keypad, RFID/IC card reader, camera, microphone, speaker, relay output, and PoE network connection. It registers to a SIP platform like an extension. A visitor presses the call key, the i31S rings the programmed extension or group, the user speaks to the visitor, sees video on a compatible endpoint, and releases the lock by DTMF command when permitted.

That makes it useful on existing PABX projects where the client wants the entrance to behave like another extension. A receptionist in Dubai can answer from a desk phone. A security desk in JAFZA can receive entrance calls on the same system as the warehouse phones. A villa in Emirates Hills can route the gate call to an indoor station or a SIP extension. A maintenance team can keep the door phone tied into the same call plan instead of running a separate analogue intercom line.

The i31S supports access by DTMF, password, RFID/IC card, and indoor switch. That matters for real sites because not every door opens the same way. A small office may want reception to open the door from the phone keypad. A staff entrance may use cards. A villa gate may still need an indoor push button near the guard room. The i31S was designed around those mixed access habits.

2 SIP lines — what that means on a door phone

The i31S has 2 SIP lines. On a desk phone, buyers often think lines mean simultaneous trunk calls. On a door phone, the idea is simpler: the unit can hold SIP registration and call-handling capacity for entrance communication. It is not a two-desk office phone. It is a door endpoint that calls the right people when the button is pressed.

In a Dubai office fit-out, one line may register as “Main Entrance” on the PABX. The call can ring reception first, then security, then a fallback group. In a villa compound, it may ring the guard desk or indoor station. In a warehouse, it may ring the admin desk during working hours and a security extension after hours. The phone’s job is to start the door conversation and trigger access control, not replace staff desk phones.

The entrance job: call, see, speak, release

The i31S combines four jobs at the entrance. First, it calls a SIP extension. Second, it carries two-way audio through its built-in microphone and 3W speaker. Third, it sends video using H.264 with a 1280×720 main stream at 25fps. Fourth, it opens a lock through relay control when the authorised user sends the correct command.

That is the reason ELV contractors still search for this model on old projects. The gate is not just a bell. It is tied to the telephone system. The person answering can speak to the visitor before allowing entry. On supported video endpoints, the caller can be seen before the gate opens. For reception desks and security rooms, that removes the normal “who is outside?” problem.

The camera uses a 1/2.7-inch colour CMOS sensor with 2 megapixels, infrared illumination support, and a 112-degree horizontal viewing angle. That gives the doorway a wide enough view for one or two visitors standing near the unit. Placement still matters in the UAE. Avoid direct noon sun into the lens, allow shade where possible, and confirm night lighting at the gate before final mounting.

Access control methods on the i31S

Fanvil lists support for 5,000 RFID/IC cards, 5,000 remote access list entries, and 200,000 door open records. For project buyers, those numbers mean the i31S can serve more than a small one-family gate. It can also support staff entrances, small residential buildings, offices, and service doors where card access and logs are part of the FM requirement.

For Dubai sites, we ask three questions before quoting: What lock is installed? Is the door strike powered separately or through the door phone output? Who should receive the call when the button is pressed? Those three answers decide whether the installation is clean or whether the contractor spends handover day chasing relay and call-routing problems.

Power and network truth for the i31S

The i31S uses a 10/100M RJ45 network port. It supports PoE using 802.3af, and it can also be powered by 12V ±15% / 1A DC where PoE is not available. For a gate or entrance installation, PoE is usually the cleaner choice because the network switch feeds the unit from the comms room or ELV cabinet.

There is no Gigabit passthrough story here like a desk phone. This is an entrance device, not a phone beside a PC. The network question is cable quality, PoE reach, weather-safe termination, and whether the door controller or lock supply is correctly separated. CAT5 or better cable is specified. On UAE gate columns, we strongly prefer clean conduit, labelled cores, and a service loop so the unit can be removed without cutting the cable.

Outdoor housing, mounting, and Dubai placement

The i31S housing uses an aluminium cover and cast-aluminium back case, with IP65 protection and IK10 impact rating. IP65 helps against dust and water spray. IK10 indicates high impact resistance for a door-entry device. Still, installation decides how long a gate phone stays clean and readable in Dubai conditions.

Mount it where visitors naturally stand, not where the cable happens to exit. Keep the camera away from direct glare where possible. Avoid placing the unit so low that delivery drivers crouch to speak. For villas, warehouses, and free zone offices, check whether the gate opens inward or outward and whether the visitor stands on the road side, the pedestrian side, or beside a vehicle window.

The i31S supports wall mounting or flush mounting. Existing projects often ask for the exact i31S because the wall cut-out, back-box position, or façade finish was already done around that model. That is a valid reason to search by exact model name. We treat those enquiries differently from new door-phone design requests: first confirm the existing mounting and wiring, then quote what can be supplied or staged.

i31S exact-model buying check

That last line matters. Project buyers do not want a surprise substitution hidden inside a quotation. If your BOQ says Fanvil i31S, we quote the i31S as an exact-model enquiry and state the availability position clearly. If the site needs engineering advice beyond that, we keep it separate from the i31S product line so procurement records remain clean.

Platform compatibility and staging in Dubai

The i31S supports SIP 2.0 and registers to SIP-based PABX platforms used in UAE projects, including 3CX, Grandstream UCM, Yeastar, and Asterisk. It can sit on the same dial plan as desk phones, reception phones, warehouse phones, and indoor stations. For Etisalat and du business environments, it is normally registered through the customer PABX rather than treated as a public trunk device.

During staging, Vector Digital Systems can prepare the door phone before dispatch where project details are available. That means extension registration, SIP account details, call button destination, DTMF unlock code, time settings, network parameters, access list import where supplied, and a test call to confirm audio. For projects with video endpoints, we also check the expected video path before the installer reaches the site.

Pricing, supply, and EOL availability

Fanvil has marked the i31S as discontinued, so supply is handled as an exact-model enquiry, not a normal open-stock desk-phone order. We quote based on the quantity requested, available channel stock, project deadline, and whether staging is required. No fixed AED price is shown because EOL availability changes by batch and destination.

Send the model, quantity, project location, and whether you need wall or flush mounting confirmation. For UAE jobs, we can include VAT breakdown, delivery, installation, and PABX configuration in the same quote. For export, we quote FOB Dubai with the needed documents for the buyer’s clearance process.

Frequently asked questions

Will the Fanvil i31S work with our 3CX / Grandstream UCM / Yeastar?

Yes. The i31S is a SIP video door phone with 2 SIP lines and support for SIP 2.0. It can register to 3CX, Grandstream UCM, Yeastar, Asterisk, and other SIP-based PABX platforms. We normally configure it as a door extension and route the call to reception, security, or a ring group.

Does the Fanvil i31S come with a power adapter, or do I need PoE?

The i31S supports PoE 802.3af and 12V DC input. For UAE installations, PoE from the ELV cabinet is usually preferred. If the site does not have PoE, we confirm the 12V power requirement and include the needed power arrangement in the same quote where applicable.

What does 2 SIP lines actually mean — can the i31S make 2 calls at once?

2 SIP lines means the door phone has SIP registration and call-handling capacity for entrance use. It does not mean the gate should be treated like a two-person office phone. Simultaneous call behaviour depends on the PABX call routing, trunk capacity, and how the door extension is programmed.

Can the Fanvil i31S open the gate or door lock?

Yes. The i31S supports door opening by DTMF, password, RFID/IC card, and indoor switch. It has 1 relay output and supports electric-lock power options. We confirm the lock voltage and wiring before installation because that is where many gate-phone problems start.

Does the Fanvil i31S support RFID or IC cards?

Yes. The i31S supports RFID/IC card access, including ID card and MIFARE ONE card support. Fanvil lists support for 5,000 RFID/IC cards, which is enough for many offices, staff entrances, small buildings, and managed villa sites.

Is the Fanvil i31S suitable for outdoor installation in Dubai?

The i31S is rated IP65 and IK10, with operating temperature support from -40°C to +70°C. For Dubai and UAE gates, placement still matters: avoid direct camera glare where possible, use proper conduit, seal the cable entry, and confirm the visitor standing position before final mounting.

Is the Fanvil i31S discontinued?

Yes. Fanvil lists the i31S SIP Video Door Phone as discontinued since 22 December 2025. This page is maintained for exact i31S enquiries, existing installations, project records, and procurement requests where the same model name is required.

Does Vector Digital Systems configure the Fanvil i31S before delivery?

Yes, where the customer provides the PABX and network details. We can stage the SIP account, call destination, unlock code, network settings, access list data where supplied, and test calls before dispatch. For multi-door sites, we label each unit by entrance location.

Is VoIP legal in the UAE, and can the Fanvil i31S work with Etisalat or du environments?

Business VoIP is used in the UAE under TRA regulation through licensed Etisalat and du services. The i31S is normally connected to the customer’s licensed SIP PABX environment as a door extension. We configure it for lawful business telephony use, not bypass calling.

Who is the supplier of Fanvil i31S in Dubai?

Vector Digital Systems LLC is an authorised Fanvil supplier in Dubai, UAE, operating since 2009. We handle Fanvil i31S exact-model enquiries for project buyers, PABX installers, ELV contractors, facilities teams, and export customers, with quotation documents suitable for procurement teams.

What is the best Fanvil door phone for an existing i31S site in Dubai?

For a site that specifically requires the same model name, mounting match, or procurement record, the correct enquiry is the Fanvil i31S exact model. Send a photo of the installed unit, quantity, mounting type, and lock wiring so we can confirm the best way to quote the same model requirement.

Does Vector Digital Systems export the Fanvil i31S from Dubai?

Yes, subject to exact-model availability. We export Fanvil project quantities from Dubai to PABX installers, ELV contractors, and telecom resellers in Oman, Qatar, Kuwait, Bahrain, Kenya, Tanzania, Nigeria, Ghana, Pakistan, and Sri Lanka. Export quotes can be issued FOB Dubai with commercial invoice, packing list, and certificate of origin.

UAE coverage and installation

Vector Digital Systems supplies, stages, and installs Fanvil door phone projects across Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah, Fujairah, and Umm Al Quwain. We support villa gates, office doors, warehouses, free zone facilities, staff entrances, and reception-controlled access points in areas such as Business Bay, JLT, DMCC, DIP, JAFZA, Dubai Silicon Oasis, and Abu Dhabi industrial zones.

MEA export from Dubai

For export buyers, the i31S is quoted as an exact-model EOL enquiry. We support telecom resellers, PABX installers, system integrators, and ELV project contractors across the Gulf, East Africa, West Africa, and South Asia. Shipments can be prepared FOB Dubai with commercial invoice, packing list, certificate of origin, and Fanvil manufacturer warranty terms where applicable.