IP Telephony & SIP Communication Systems · Guangzhou, China
Scenarios · logistics
A warehouse is a building where nobody stands still and nothing is quiet. The communications requirement is therefore not a desk phone but coverage: announcements that cut through a working aisle, a call button at a dock door, a radio in a forklift and a handset in the gatehouse — all on one system. The design on this page builds that from SIP speakers, a radio-over-IP gateway, outdoor stations and portable handsets, registered to the same PBX that carries the office phones. NEXVIA designs, manufactures, supplies and commissions the system; the terminals are manufactured by NEXVIA.
A distribution warehouse usually lands at 4 to 40 speaker positions, 2 to 4 call stations and 4 to 20 portable handsets, behind one PBX with 62 SIP trunks on the OM50G or 496 on the OM200G. The speaker count is driven by the number of zones, not the floor area: a shipping office, a picking area, a loading bank and a yard are four zones before any aisle coverage is added.
Two numbers decide the audio design. The A233 horn publishes 30 W rated output at IP66 for the yard and the loading bank; the A212 wall speaker publishes 8 Ω with up to 15 W class D output, PoE 8 W / PoE+ 15 W and talkback for indoor areas where a two-way call is needed. Both sit in a family that supports up to 20 multicast zones with prioritisation, addressed from a console or an IP phone.
The radio fleet is the part most sites already own. The W712 gateway integrates a UHF 400–470 MHz radio module, supports one analog or DMR II radio plus one SIP call, and connects group calls between radios and SIP phones; the A201 ceiling speaker carries an offline timed broadcast, and its rated output is printed two ways in the source material, so its wattage is confirmed on the quotation. Prices are not published on this site — NEXVIA quotes per zone count, door count and cable route.
Ambient machinery noise defeats a telephone bell. The documented answers are horn and wall speakers with published output figures, up to 20 multicast zones with prioritisation, environmental noise detection, and portable handsets that vibrate and ring on the person rather than the building.
Forklift and yard teams are already equipped with radios, and the radios work. The W712 keeps them: one analog or DMR II radio plus one SIP call, group calls across radios and phones, and call recording to a TF card up to 128 GB.
A dock call usually has to end by opening something. The door stations and consoles carry the contacts for it — A12V has 2 short-circuit inputs and 2 outputs, A10W has one relay, and the A330i console has 8 inputs, 1 output and an RS-485 interface — so the release is designed with the call rather than afterwards.
Car parks and yards are named as unattended-site environments in the material. Anti-tamper alarms on the A12V report to the control centre if a cover is removed, the A513W combines an IP66 speaker with a 4 MP IR camera and relay contacts for a strobe, and ONVIF links the call to a VMS.
| Size band | System | Devices | Notes |
|---|---|---|---|
| Single unit or small store — up to 2,000 m² | OM20G — 24 SIP trunks; 4 analog ports for a legacy line | 4–8 speakers (A212 wall / A201 ceiling), 1–2 call stations (A10W / A12V), 2–4 wall handsets (V60G), 4–8 portable handsets | The desktop chassis suits a single-cabinet installation. The OM20G is the only model that can dial out through a 3G/4G USB modem, which matters at a detached site with no wired line. |
| Distribution centre — 2,000 to 10,000 m², 4 to 10 zones | OM50G — 62 SIP trunks; up to 12 analog ports across 3 interface cards | 12–24 speakers across 4–10 zones, 2–4 outdoor stations, 1 console (X210i / A330i), 8–15 portable handsets, 1–2 paging gateways | Ring groups hold up to 40 extensions on this model, so a dock call group that rings the shipping office, the gatehouse and a handset fits comfortably. |
| Large or multi-hall site — 10,000 m² and above | OM200G — 496 SIP trunks; up to 96 analog ports on 24-line interface cards | Speakers per zone across halls and yard, consoles at the site office and the security desk, radio gateway for the forklift fleet, handsets per shift | 4 hot-swap card slots, gigabit Ethernet and single or dual AC/DC power. Up to 32 departments for group pickup and up to 60 extensions in a ring group at this size. |
| Multi-site logistics network | OM1000-UC — 1000 SIP trunks, up to 200 concurrent calls per trunk | The per-site counts repeated, one shared dial plan, extension ranges per site, DID numbers for shared site numbers | SIP only, with dual hot standby (3 fixed IP addresses) and multi-site networking using unique or repeatable extension numbering. |
| Existing radio fleet that must keep working | OM50G or OM200G — 62 or 496 SIP trunks | W712 RoIP gateway per radio channel, with a channel per talk group; the same speakers and handsets as above | The W712 integrates a UHF 400–470 MHz radio module and supports one analog or DMR II radio plus one SIP call, with group calls between radios and SIP phones. Record the radio make and model during the survey. |
| Retrofit where cable is scarce | OM50G — 62 SIP trunks | PA3 or PA2S gateways driving the existing speaker line, new SIP speakers added zone by zone | The IP endpoint tier is stated to bridge legacy paging into the IP environment; where no data cable exists either, PN1 carries network and power over an existing two-core pair, up to 1600 m for the network function without power. |
| Model | Where it goes | Published capability | Power and rating |
|---|---|---|---|
| A233 | Yard, loading bank, external walls | Horn speaker with 30 W rated output and a built-in microphone for system self-test, monitoring, environmental noise detection and two-way voice | IP66; PoE, PoE+ or DC |
| A212 | Picking aisles, packing, shipping office walls | 8 Ω with up to 15 W class D output; talkback through an omnidirectional microphone; alarm linkage; offline timed broadcast; up to 20 multicast zones with prioritisation | 10/100 Mbps Ethernet with integrated PoE (published as PoE 8 W / PoE+ 15 W); wall mount with optional angle bracket |
| A201 | Ceiling coverage in halls and offices | Ceiling SIP speaker with a built-in microphone, system self-test, monitoring, two-way voice, offline timed broadcast and up to 20 multicast zones | PoE, PoE+ or DC; the rated output is printed two ways in the source, so the wattage is confirmed on the quotation |
| A513W | Unattended dock, gate or yard position | All-in-one SIP speaker with a built-in 4 MP HD camera with IR night vision, H.264, built-in microphones, relay in and out for a PIR sensor, infrared sensor or strobe light | IP66; PoE or DC; dual-band 2.4G/5G Wi-Fi and BLE; up to 10 W (DC supply) |
| PA2S | Bridging an existing speaker line | SIP intercom and paging gateway: 10–30 W mono output adapting to input voltage, line out for an external active speaker, 1 short-circuit in and 1 out with a built-in relay, SOS call key | PoE to IEEE 802.3af, or 12–24 V 2 A DC; −30 °C to 60 °C |
| PA3 | Larger legacy paging system and scheduled audio | SIP paging gateway: 10–30 W mono output, line out, SOS call key, line in 3.5 mm, USB 2.0 and TF card, analog output to passive speakers or amplifiers, video linkage with an IP camera | PoE / PoE+ (IEEE 802.3at, published as PoE Class 4) or 12–24 V 2 A DC; −20 °C to 50 °C |
| A12V | Gate, dock door, external help point | 4 MP camera with IR night vision; 10W speaker with AEC; 2 short-circuit inputs and 2 outputs; anti-tamper alarm reported to the control centre | IP66 and IK10, −40 °C to 70 °C; ONVIF and RTSP on the video model |
| A10W | Internal dock door, muster point, office door | Three function keys; 2W speaker with echo cancellation; one alarm input for an external emergency button; one-click call rings the host plus the call group | Standard 86 box; PoE or 12 V DC; IP54; −10 °C to 50 °C |
| W712 | Radio room or rack, one per radio channel | RoIP gateway integrating a UHF 400–470 MHz radio module; one analog or DMR II radio plus one SIP call; group calls between radios and SIP phones; recording to a TF card up to 128 GB or USB | Network plus UHF radio; web deployment and management; SIP standard protocol |
| W611W / W620W | Stock pickers, marshals, drivers | 16 DSS keys plus a configurable push-to-talk key. W611W: IP67, 1900 mAh, up to 9 h talk / 200 h standby. W620W: 3000 mAh, up to 13 h / 240 h, dual microphones and H.264 video preview | Wi-Fi 6 dual-band 2.4G and 5G; Bluetooth 5.0; drop-safe from 1.8 m (W611W) |
| V60G | Gatehouse, plant room, goods office | Wall-mount handset with a 2.4-inch 320×240 colour screen, 6 keys and dual Gigabit ports | PoE support; wall-mount only |
| Requirement | Separate paging amplifier and telephone system | This IP design | What changes operationally |
|---|---|---|---|
| Zone control | Mechanical zone selector switches on the amplifier, one position per circuit | Up to 20 multicast zones with prioritisation, addressed from a console or an IP phone; dynamic zone control and remote volume adjustment in the advanced tier | Any combination of areas can be addressed from a screen instead of a switch bank |
| Scheduled messages | A timer unit wired into the amplifier, or a manual clock | Scheduled broadcasting with custom time templates, plus offline timed broadcast held on the A201 and A212 speakers | The timetable is a configuration and survives a network interruption |
| Dock and gate calls | A bell or a telephone that nobody can see from the dock | A12V and A10W stations are SIP extensions in the site call group, with relays to release a door or barrier | A dock call is answered, transferred and logged like any other call |
| Forklift and yard staff | A separate radio system with no connection to the telephone | W712 puts one analog or DMR II radio on the same system as SIP calls, with group calls between radios and phones | One system carries both fleets, and radio traffic can be recorded with calls |
| Existing speaker cabling | Replace the amplifier and the whole line together | PA3 and PA2S gateways drive passive speakers and legacy analog horn speakers; the IP endpoint tier is stated to bridge legacy paging into the IP environment | The changeover can be done zone by zone within a shutdown window |
| Records | None, or a separate logger on the telephone only | Audio archiving of SIP paging, intercom and calls where the paging tier provides it; call detail records to a server on port 1809; radio and SIP call recording on the W712 | Announcements, calls and radio traffic can be reviewed after an incident |
| Safety alarm path | A dedicated alarm bell, unconnected to anything else | One-key alarm activation, alarm light flashing and simultaneous calling to the management unit; short-circuit inputs take alarm buttons and sensors; A513W carries relay in and out for a strobe light | The alarm and the announcement share one system, with priority designed in |
| Area | Device | Note |
|---|---|---|
| Yard, loading bank and external walls | A233 horn speaker | IP66 horn with 30 W rated output, a built-in microphone for system self-test, monitoring, environmental noise detection and two-way voice; part of a family supporting up to 20 multicast zones with prioritisation. |
| Picking aisles, packing and shipping | A212 wall speaker | 8 Ω with up to 15 W class D output and talkback through an omnidirectional microphone, with alarm linkage and offline timed broadcast; PoE 8 W / PoE+ 15 W, wall mount with an optional angle bracket. |
| Halls, offices and canteen ceilings | A201 ceiling speaker | Ceiling SIP speaker with a built-in microphone, two-way voice, self-test, monitoring and offline timed broadcast on PoE, PoE+ or DC. The rated output is printed two ways in the source, so the wattage is confirmed on the quotation. |
| Dock door, gate and unattended yard position | A12V outdoor intercom (A513W where camera and speaker must share one enclosure) | A12V: IP66 and IK10 from −40 °C to 70 °C, 4 MP camera, 10W speaker with AEC, 2 short-circuit inputs and 2 outputs. A513W: IP66, 4 MP IR camera, up to 10 W (DC), relay in and out for a PIR sensor, infrared sensor or strobe light. |
| Internal dock doors and muster points | A10W SIP mini intercom | Standard 86 box with three function keys, a 2W speaker with echo cancellation, one relay and one alarm input for an external emergency button; one-click call rings the host plus the call group. |
| Gatehouse, goods office and plant rooms | V60G wall handset (X3U at a desk position) | V60G is wall-mount only with a 2.4-inch 320×240 colour screen, 6 DSS keys and dual Gigabit ports; X3U adds six lines with three LED line keys, Gigabit PoE and IPv6 for a staffed desk. |
| Forklift and yard radio fleets | W712 RoIP gateway, with W611W / W620W handsets for Wi-Fi coverage | W712 integrates a UHF 400–470 MHz radio module and supports one analog or DMR II radio plus one SIP call with group calls between them. Handsets add 16 DSS keys and a push-to-talk key over Wi-Fi 6. |
Count zones, then positions within each zone. A distribution centre usually lands at 4 to 10 zones — shipping office, picking, packing, loading bank, yard, canteen, gatehouse — and 12 to 24 speaker positions behind them.
Yes. Zones are managed from the console, the speaker family supports up to 20 multicast zones with prioritisation, and the advanced tier adds dynamic zone control and remote volume adjustment per device.
No. The IP endpoint tier is stated to bridge legacy paging systems into the IP environment, and the PA3 and PA2S gateways drive passive speakers and legacy analog horn speakers — PA3 publishes 10–30 W mono output with a line out for an external amplifier, and PA2S the same output range with a built-in relay.
Two documented routes. Staff who stay inside the Wi-Fi coverage carry a W611W or W620W handset with 16 DSS keys and a configurable push-to-talk key; where the site runs UHF radios, the W712 gateway puts one analog or DMR II radio on the same system as the SIP phones.
Yes, and it is an extension rather than a bell. The A12V is IP66 and IK10 from −40 °C to 70 °C with a 4 MP camera, a 10W speaker with echo cancellation and 2 short-circuit inputs and 2 outputs — enough to talk to the driver and release a barrier or shutter during the call.
The published behaviour is redundancy plus fallback. Analog lines on FXO ports keep working directly during an internet outage, an outbound SIP call can fall back to an analog line when the trunk fails, and the OM20G can dial out through a 3G/4G USB modem where no wired line exists.
One, in this design. Speakers, call stations, handsets and radio gateways all register to the same PBX as the office phones, so the site keeps one dial plan, one call-record feed and one fault routine instead of a phone system plus an amplifier rack plus a radio network.
Typical zone and device plan by area
| Area | Device | Zone behaviour | Why this device |
|---|---|---|---|
| Yard and loading bank | A233 horn | Own zone, outdoor rated | 30 W rated output at IP66 for distance and engine noise |
| Picking aisles | A212 wall | One zone per hall or per aisle group | 15 W class D with talkback so a picker can answer |
| Packing and shipping office | A201 ceiling | Own zone with a wall handset for calls | Even indoor coverage plus two-way voice |
| Dock doors and gates | A12V | Extension in the shipping call group | Camera, 10W speaker and 2 in / 2 out for the barrier |
| Muster point and internal doors | A10W | Extension in the site call group | 86-box position with one relay and one alarm input |
| Gatehouse and plant rooms | V60G wall handset | Extension with a BLF key for the yard | A handset where a desk phone has nowhere to sit |
| Forklifts and marshals | W611W / W620W handset, or W712 radio gateway | Portable extension with push-to-talk | Reaches the person rather than the building |
| Site office and security desk | X210i / A330i console | Paging control and answering position | 106 or 116 DSS keys with group broadcasting |
Write the zone plan before the speaker schedule: without it, every announcement becomes site-wide and staff stop listening to any of them.
The W712 gateway is the bridge between the radio fleet and the telephone system. It integrates a UHF 400–470 MHz radio module, adopts the SIP standard protocol, and supports one connection of an analog or DMR II digital radio plus one SIP call. Group calls connect radios and SIP phones, and the gateway is documented as compatible with mainstream analog and digital radios and with most mainstream IP PBX platforms.
Where a public address system also carries emergency announcements, the interface to the fire detection system and the priority of an alarm announcement over a routine one are regulated locally. The published capabilities that matter are up to 20 multicast zones with prioritisation, one-key alarm activation, alarm light flashing and simultaneous calling to the management unit, plus short-circuit inputs on consoles and gateways. Have the fire interface designed and signed off by the site fire contractor — it is not a feature that can be bolted on after handover, and this page makes no certification claim.
In a working warehouse the announcement has to be intelligible above machinery and vehicle movement, and the people hearing it are often wearing hearing protection. The material supports the design with rated output figures (A233 30 W, A212 up to 15 W class D, FH-S01 up to 20 W, A513W up to 10 W on DC), environmental noise detection, self-test and monitoring on the speaker range, and remote volume adjustment per device. Mounting heights, the measured ambient level and the hearing-protection policy are site matters; confirm them with the site safety officer before positions are fixed.
Speakers and gateways are PoE devices, so the switch budget has to cover them: PA2S is IEEE 802.3af, PA3 is PoE/PoE+ (IEEE 802.3at, published as PoE Class 4) with 12–24 V 2 A DC as the alternative, A212 is published as PoE 8 W / PoE+ 15 W, and A201 takes PoE, PoE+ or DC. Outdoor positions must match the site: the A233 horn and the A513W video speaker are IP66, the A12V is IP66 and IK10 from −40 °C to 70 °C, and the PA2S gateway runs from −30 °C to 60 °C. Cable classes, separation from power and containment rules are local — confirm them before first fix.
The W712 puts UHF 400–470 MHz radios on the telephone system, and radio spectrum use, licence conditions and permitted power are regulated nationally — the site own radio licence and its conditions apply. Recording is a second question: audio archiving of SIP paging, intercom and calls is published for the paging tier, and the W712 records radio and SIP calls to TF or USB storage. What may be recorded, how long it is kept and what the workforce is told are local determinations. Confirm both with the site own compliance owner before the gateway is installed.
We have not published a named reference project on this page. The site does not carry customer names or installation records until the client confirms in writing which projects may be made public.
Page author: NEXVIA EngineeringPublished:Last updated:
Covers: warehouse intercom · warehouse pa system · warehouse intercom system · warehouse public address system · warehouse paging pa sound system
All IP telephony, intercom and paging equipment in this design is supplied and integrated by NEXVIA.
Running an existing platform
Replacing an older system
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Send us the site type, the number of extensions or rooms and the areas to cover — we will come back with a configuration and quotation.
Six facts build a configuration: site type, extensions or rooms, simultaneous calls, areas to cover, existing lines and the documents you already hold. Send as many as you know — nothing has to be final before the first reply.
