IP Telephony & SIP Communication Systems · Guangzhou, China
Scenarios · paging audio
An IP paging system is a coverage design with a network attached. The speaker has to be loud enough for the space, the zone has to be small enough to be useful, the power has to arrive on the cable, and the whole thing has to be reachable from a console rather than from an amplifier rack. This page works through the speaker and gateway models this catalogue documents — with their published power, impedance and PoE figures — and shows how they are zoned, powered and driven from a console or an IP phone. NEXVIA designs, manufactures, supplies and commissions the system; the speakers and gateways are manufactured by NEXVIA.
Size an IP paging system by zone and by space, then choose the shape. A building with a reception, a canteen, four corridors, a car park and a plant room is 7 zones; the family supports up to 20 multicast zones with prioritisation, so the zoning is a design decision rather than a hardware ceiling. Each zone needs its own speaker run and its own addressing, which is what makes one announcement different from another.
The published power figures are the ones to design to. The A233 horn is rated at 30 W output with IP66 for outdoor and high-noise areas; the FH-S01 ceiling speaker reaches up to 20 W with a built-in class D amplifier on PoE to IEEE 802.3af; the A212 wall speaker is 8 Ω with up to 15 W class D output (PoE 8 W / PoE+ 15 W) and publishes talkback through an omnidirectional microphone; and the A513W video speaker is published at up to 10 W on a DC supply inside an IP66 enclosure with a 4 MP camera.
One figure in the source conflicts with itself, and the honest answer is to say so: the A201 ceiling speaker is printed with both 30 W and 10 W in different places, so its rated output is confirmed on the quotation rather than quoted from a marketing page. Everything else — the PoE classes, the zone count, the offline timed broadcast and the gateway outputs — is as documented. Prices are not published on this site; every system is quoted per zone count and per position.
A building with one zone is a building where every announcement interrupts everyone. Zoning is the design work: up to 20 multicast zones with prioritisation, each on its own run, addressed from a console or an IP phone.
The A201 ceiling speaker is printed with both 10 W and 30 W in the source material. The honest handling is to say so and confirm the rated output on the quotation rather than to publish whichever figure reads better.
Replacing a 100 V line system is expensive and often unnecessary. PA3 and PA2S drive the existing passive speakers with a 10–30 W mono output and a line out, so the changeover happens zone by zone as budget and shutdown windows allow.
PoE classes differ across the family, and a hall full of speakers plus a console can exceed a switch before the port count does. Budget the PoE per switch, and keep the DC alternative in mind for the positions that are hardest to feed.
| Size band | System | Devices | Notes |
|---|---|---|---|
| Single room or small office — 1 to 3 zones | OM20G — 24 SIP trunks; 4 analog ports if a legacy line is kept | 1–3 speakers (A201 ceiling / A212 wall), 1 desk phone as the paging position, or a console where paging is frequent | The smallest builds often use a desk phone as the announcement position; group broadcasting from a console phone such as the X210i is added when paging becomes a daily task. |
| Shop, clinic or small school — 3 to 8 zones | OM50G — 62 SIP trunks; up to 12 analog ports across 3 interface cards | 6–16 speakers across 3–8 zones, 1 console (X210i / A330i), 1 gateway where an old amplifier line is kept | The lite tier is designed for exactly this size: a console phone manages the endpoints, with automatic terminal discovery and provisioning and no dedicated server. |
| Office building, hotel or hospital wing — 8 to 20 zones | OM200G — 496 SIP trunks; up to 96 analog ports on 24-line interface cards | Speakers per floor and per area indoors, horns outdoors, consoles per paging position, gateways per legacy block | 4 hot-swap card slots and gigabit Ethernet as the paging backbone. PoE budgeting per switch is the design decision that matters most at this size. |
| Campus, plant or district with several buildings | OM1000-UC — 1000 SIP trunks, up to 200 concurrent calls per trunk | The per-building zone counts repeated, a shared dial plan, one management position per site or a central one | The advanced tier is stated for large-scale deployments with cloud or on-premise B/S architecture for multi-site management, with dynamic zone control, remote volume adjustment and text-to-speech. |
| Retrofit over an existing analog paging system | OM50G or OM200G — 62 or 496 SIP trunks | PA3 or PA2S gateways driving the existing passive speakers, with SIP speakers added zone by zone | The IP endpoint tier is stated to bridge legacy paging systems into the IP environment. Both gateways publish a 10–30 W mono output that adapts to the input voltage and a line out for an external amplifier. |
| Outdoor coverage — yard, car park, sports field | OM200G or OM50G — 496 or 62 SIP trunks | Horn speakers (A233, IP66, 30 W rated output) as their own zones, with outdoor call points on the same system | Horns carry environmental noise detection and a built-in microphone for self-test and two-way voice; position counts follow the measured ambient level rather than a rule of thumb. |
| Model | Shape and where it goes | Published output and features | Power and zones |
|---|---|---|---|
| A233 | Horn: yards, car parks, sports fields, loading areas | Horn speaker with 30 W rated output, high sound clarity and wide dynamic range, and a built-in microphone for system self-test, monitoring, environmental noise detection, volume adjustment and two-way voice | IP66; PoE, PoE+ or DC; up to 20 multicast zones |
| FH-S01 | Ceiling: rooms and halls where a stronger amplifier is needed | Up to 20 W with a built-in class D amplifier, all-in-one codec, amplifier and speaker, talkback through a built-in microphone, a customisable WAV for emergency notification and alarm, and linkage with security alarming devices | PoE to IEEE 802.3af; up to 20 multicast zones with prioritisation; 10/100 Mbps Ethernet |
| A212 | Wall: corridors, canteens, halls, production areas | 2-way coaxial speaker at 8 Ω with up to 15 W class D output, talkback through an omnidirectional microphone, alarm linkage, offline timed broadcast, an external volume knob and the ability to drive an analog passive speaker | 10/100 Mbps Ethernet with integrated PoE, published as PoE 8 W / PoE+ 15 W (CN deck states IEEE 802.3at); wall mount with an optional angle bracket |
| A201 | Ceiling: general indoor coverage | Ceiling SIP speaker with a built-in microphone, system self-test, monitoring, environmental noise detection, volume adjustment, two-way voice and offline timed broadcast | PoE, PoE+ or DC; up to 20 multicast zones; the rated output is printed two ways in the source, so the wattage is confirmed on the quotation |
| A513W | Wall or ceiling: unattended areas needing a camera too | All-in-one SIP speaker with a built-in 4 MP HD camera with IR night vision, built-in microphones, H.264, dual-band 2.4G/5G Wi-Fi and BLE, and relay in and out for a PIR sensor, infrared sensor or strobe light | IP66; PoE or DC; up to 10 W on a DC supply |
| PA2S | Gateway: bridging an existing speaker line | SIP intercom and paging gateway with a 10–30 W mono output adapting to the input voltage, a line out for an external active speaker, an SOS call key, a recording output, 1 short-circuit in and 1 out with a built-in relay | PoE to IEEE 802.3af or 12–24 V 2 A DC; −30 °C to 60 °C |
| PA3 | Gateway: larger legacy system with scheduled audio | SIP paging gateway with a 10–30 W mono output, a line out, an SOS call key, a 3.5 mm line in, USB 2.0 and TF storage, analog output to passive speakers or amplifiers, and 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 |
| X210i / A330i | The paging position, not a speaker | X210i: 106 DSS keys across three screens with a gooseneck microphone, group broadcasting, 20 SIP lines. A330i: 116 DSS keys, 10.1-inch touchscreen, 92 dB speaker, a built-in broadcast system, 8 short-circuit inputs, 1 output and RS-485 | Dual Gigabit ports with integrated PoE; terminals used with the consoles are scanned and provisioned automatically |
| Requirement | Conventional amplifier and 100 V line system | This IP design | What changes operationally |
|---|---|---|---|
| Zone selection | Rotary switches or relay cards on the amplifier, one circuit per position | Up to 20 multicast zones with prioritisation, addressed from a console or an IP phone, with dynamic zone control and remote volume adjustment in the advanced tier | Any combination of areas is addressable from a screen, and levels are trimmed per device |
| 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 and real-time text-to-speech in the advanced tier | The timetable is a configuration, and the speakers keep it if the network drops |
| Cabling | A 100 V line run through the building, with tap settings at each speaker | One network run per speaker with PoE where published, or a bridged legacy line through a PA2S or PA3 gateway | A new speaker is a network device rather than a tap on a line |
| Talkback | Not available: the system only broadcasts | Talkback is published on the A212 and FH-S01, two-way voice on the A201 and A233, and the console family carries gooseneck microphones | The models that publish two-way audio are specified for the positions that need it |
| Emergency and alarm audio | A separate alarm interface or a manual switch | One-key alarm activation, alarm light flashing and simultaneous calling to the management unit; short-circuit inputs take alarm buttons and sensors; a customisable WAV on the FH-S01 for emergency notification | The alarm and the announcement share one system with priority designed in |
| Records | None | Audio archiving of SIP paging, intercom and calls where the paging tier provides it; call detail records to a server on port 1809 | An announcement can be reviewed afterwards |
| Fault finding | Walk the building with a meter | System self-test, monitoring and environmental noise detection on the speakers; an interactive digital map in the advanced tier; remote volume adjustment per device | The system reports its own state before anyone complains |
| Area | Device | Note |
|---|---|---|
| Corridors, canteens and halls — wall coverage | A212 wall speaker | 2-way coaxial speaker at 8 Ω with up to 15 W class D output, talkback through an omnidirectional microphone, alarm linkage and offline timed broadcast; PoE 8 W / PoE+ 15 W, wall mount with optional angle bracket, external volume knob and the ability to drive an analog passive speaker. |
| Halls and rooms needing more ceiling output | FH-S01 ceiling speaker | Up to 20 W with a built-in class D amplifier, talkback, a customisable WAV for emergency notification and alarm, and linkage with security alarming devices, on PoE to IEEE 802.3af. |
| General indoor ceiling coverage | A201 ceiling speaker | Built-in microphone, self-test, monitoring, environmental noise detection, two-way voice 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. |
| Yard, car park, loading area and sports field | A233 horn speaker | IP66 horn with 30 W rated output, high sound clarity, a built-in microphone for self-test, monitoring, environmental noise detection, volume adjustment and two-way voice, on PoE, PoE+ or DC. |
| Unattended area needing audio and video together | A513W video speaker | IP66 all-in-one SIP speaker with a 4 MP HD camera with IR night vision, built-in microphones, H.264, dual-band 2.4G/5G Wi-Fi and BLE, relay in and out for a PIR sensor, infrared sensor or strobe light, and up to 10 W on a DC supply. |
| Existing analog paging line | PA2S or PA3 SIP paging gateway | A 10–30 W mono output that adapts to the input voltage with a line out for an external active speaker or amplifier; PA2S adds a built-in relay with 1 in and 1 out and an SOS call key, PA3 adds line in, USB 2.0, TF storage and IP camera linkage. |
| Paging position | X210i or A330i console (A320i for the serverless tier) | X210i: 106 DSS keys across three screens with a gooseneck microphone and group broadcasting. A330i: 116 DSS keys, 92 dB speaker and a built-in broadcast system with 8 short-circuit inputs, 1 output and RS-485. A320i runs the lite tier without a dedicated server. |
A zone is a run, not a count: one corridor, one hall, one canteen or one outdoor area. Within a zone the number of speakers follows the coverage and the ambient noise, and the published figures to design to are 30 W rated output on the A233 horn, up to 20 W on the FH-S01, up to 15 W class D on the A212 and up to 10 W on the A513W.
The A233 horn: an IP66 horn speaker with 30 W rated output, a built-in microphone for self-test and monitoring, environmental noise detection and two-way voice. It registers as its own multicast zone and needs no separate weatherproofing.
No. The A212 and FH-S01 have a built-in class D amplifier (up to 15 W and up to 20 W respectively), the A201 is a self-contained ceiling speaker, the A233 is a self-contained horn and the A513W is an all-in-one unit — each takes power over the network or from a DC supply and receives audio over SIP.
On the models that publish it. The A212 and FH-S01 publish talkback through a built-in microphone, the A201 and A233 publish two-way voice, and the A513W has built-in microphones. What the whole series does not do is two-way broadcast, which the material states clearly.
By schedule. Scheduled broadcasting uses custom time templates, real-time text-to-speech covers typed messages in the advanced tier, and the A201 and A212 speakers keep an offline timed broadcast running on their own so a routine message does not depend on a live operator.
Not necessarily. The lite tier is built around a console phone such as the A320i, eliminating the traditional need for a dedicated server, with automatic discovery and provisioning of terminals and zone management from a 10.1-inch screen. The advanced tier uses cloud or on-premise B/S architecture where multi-site management, text-to-speech or digital maps are required.
The published ones: FH-S01 on PoE to IEEE 802.3af, A212 as PoE 8 W / PoE+ 15 W, A201 on PoE, PoE+ or DC, A233 on PoE, PoE+ or DC, A513W on PoE or DC, PA2S to IEEE 802.3af and PA3 to PoE/PoE+ (IEEE 802.3at, published as PoE Class 4) with 12–24 V 2 A DC as the alternative.
Shape, output and power, as published
| Space | Model | Published output | Power and checking |
|---|---|---|---|
| Outdoor yard, car park, sports field | A233 horn | 30 W rated output, IP66, environmental noise detection | PoE, PoE+ or DC |
| Hall or room needing stronger ceiling audio | FH-S01 ceiling | Up to 20 W with a built-in class D amplifier, talkback and a customisable emergency WAV | PoE to IEEE 802.3af |
| Corridor, canteen, production area | A212 wall | 8 Ω, up to 15 W class D, talkback, alarm linkage, offline timed broadcast | PoE 8 W / PoE+ 15 W; optional angle bracket |
| General indoor ceiling coverage | A201 ceiling | Built-in microphone, two-way voice, self-test, monitoring, offline timed broadcast | PoE, PoE+ or DC; rated output confirmed on the quotation |
| Unattended position with a camera requirement | A513W | Up to 10 W (DC), 4 MP IR camera, built-in microphones, relay in and out | IP66; PoE or DC |
| Existing analog speaker line | PA2S or PA3 gateway | 10–30 W mono output, line out for an external amplifier, SOS call key | PA2S IEEE 802.3af; PA3 PoE/PoE+ or 12–24 V 2 A DC |
Decide the shape first (ceiling, wall, horn or video), then the output, then the power method. Zone design follows the building, not the model list.
Tier names and capabilities are as printed in the solution material; endpoint counts and the final speaker schedule are confirmed on the quotation.
Where the paging system is also used for 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, simultaneous calling to the management unit and a customisable WAV for emergency notification on the FH-S01. Have the fire interface designed and signed off by the site own fire contractor, and keep the announcement path testable through the self-test and monitoring features on the speaker range. Nothing on this page is a certification claim.
A speaker that cannot be understood is not doing its job, and the places where paging matters most are the noisy ones. The published tools are rated output figures (30 W on the A233, up to 20 W on the FH-S01, up to 15 W class D on the A212, up to 10 W on the A513W), environmental noise detection, volume adjustment, self-test and monitoring. Mounting heights, the coverage of a large open space and the interaction with hearing protection are site matters to be agreed with the safety officer, and the A201 rated output is confirmed on the quotation because the source prints it two ways.
PoE is not uniform across the range, so the switch budget and the cable schedule have to follow the actual model list: FH-S01 to IEEE 802.3af, A212 published as PoE 8 W / PoE+ 15 W, A201 on PoE, PoE+ or DC, PA2S to IEEE 802.3af, PA3 to PoE/PoE+ with 12–24 V 2 A DC as an alternative. Outdoor positions must match their rating — IP66 on the A233 and the A513W, and the temperature ranges published for the gateways — and cable classes, containment, separation from power and earthing are local installation rules. Confirm them with the site own contractor before first fix.
Audio archiving of SIP paging, intercom and calls is a published capability of the paging tier, and zones can be monitored and level-adjusted remotely. Where announcements are recorded, where a talkback position can be listened to, and how long audio is retained are policy questions governed by local law and by the building own rules — not properties of the speaker. Decide what is archived, who may retrieve it and what staff and visitors are told, and write it into the operating procedure before the system is commissioned.
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: ip paging speaker · sip paging horn · voip paging speaker · ip paging system · overhead paging voip
All IP telephony, intercom and paging equipment in this design is supplied and integrated by NEXVIA.
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Wall speaker with 15 W class D output, talkback and alarm linkage.
Ceiling speaker for indoor zones, with two-way voice and a built-in microphone.
IP66 SIP speaker with a 4 MP IR camera and a relay interface.
SIP paging and intercom gateway with PoE, call key and external speaker output.
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