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Akuvox AV-E21A Intercom Station

The robust SIP emergency call station with panic button

The Akuvox AV-E21A is a compact SIP intercom station specifically developed for use as an emergency call intercom. Instead of a classic call button, a robust panic button is located in the centre of the front panel, via which a voice connection is established immediately in an emergency. The manufacturer positions the entire E21 series for public areas such as multi-storey car parks, underground stations, company premises, educational institutions and medical facilities – i.e. places where help must be requested quickly and reliably in an emergency.

Two versions of the E21 series: Akuvox offers the series either as E21V with integrated camera or – as described here – as E21A without camera. The AV-E21A deliberately focuses on pure voice function and scores with a particularly plain, practically indestructible front panel.

The housing is made of grade 316 stainless steel and is impact- and shock-resistant according to IK10. In combination with the optionally available flush-mounted box, the station achieves IP65 protection rating and is therefore also suitable for continuous outdoor use.

Clear voice connection in an emergency

At the centre of the AV-E21A is a reliable, hands-free voice connection via IP – without a handset or buttons for call acceptance.

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Hands-free audio with echo cancellation

Integrated microphone and speaker ensure clear conversations without disturbing echo.

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Voice activity detection

Voice Activation Detection and Comfort Noise Generator for a natural-sounding connection.

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Open SIP standard

Support for SIP v1 and v2 makes the station compatible with virtually any IP telephone system.

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Ethernet & PoE

Connection via a single network cable that simultaneously provides the power supply.

How the AV-E21A is built

The design of the AV-E21A is deliberately reduced: the fewer moving and protruding parts, the less surface area for vandalism.

1

Front panel made of grade 316 stainless steel

The entire front consists of weather-resistant grade 316 stainless steel, as also used in marine and outdoor applications. Together with the IK10 classification, the front withstands deliberate blows and continuous stress.

2

Illuminated panic button

Instead of a conventional call button, a single robust button is located in the centre, which in an emergency immediately establishes a SIP connection to the stored remote station.

3

Reset button on the circuit board

An additional reset button is built in internally on the electronics and is intended exclusively for the installer to reset the device – it is not accessible from the outside.

4

Microphone and speaker

A microphone and speaker discreetly integrated into the front handle the hands-free connection including echo cancellation.

5

Rear connections

On the rear are the Ethernet connection with PoE support, two relay outputs, two inputs and a line-out connection – sufficient to connect, for example, a door or gate control.

6

Mounting and protection rating

The AV-E21A is designed as a flush-mounted device and is recessed flush into the wall. For full outdoor use with IP65 protection rating, a matching flush-mounted box is additionally required, which is available as a separate accessory.

From button press to help

The panic button is the central operating path of the AV-E21A – supplemented by the option to open a door or gate directly during the call.

  • A button press immediately establishes a SIP voice connection to the stored remote station
  • Hands-free function – no need to pick up or operate further buttons
  • Two relays can be controlled individually via DTMF tones during the call
  • Integration into existing SIP telephone systems or emergency call centres possible
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Practical example: A person presses the panic button of the AV-E21A in a multi-storey car park. The responsible control centre answers the call, speaks directly with the person and, if required, opens a nearby barrier or door via DTMF tone so that help can arrive more quickly.

Integration into existing systems

The AV-E21A is designed as an open SIP device and can be integrated independently of the manufacturer of the rest of the telephone system.

SIP v1 & v2

Direct integration into IP telephone systems and emergency call centres via an open standard.

Codecs & DTMF

Narrowband and wideband audio as well as in-band and out-of-band DTMF for relay control.

IP network protocols

Support for common network protocols for operation, time synchronisation and remote access.

Linux operating system

The device runs on a standalone Linux system that is managed via the web interface.

Operation and maintenance from a distance

For professional operation, the AV-E21A includes several administrative functions that reduce installation and maintenance effort.

  • Auto-provisioning for automated initial setup
  • Management via a web-based management portal
  • Web-based packet dump for network diagnostics
  • Backup and restore of the configuration
  • Export of access logs (Entry Logs)
  • Export and import of access tables
  • Firmware updates via the web interface
  • System logs including door access logs

Built for continuous operation and vandalism protection

As an emergency call station in public space, the AV-E21A is exposed to potential weather and deliberate damage – the design is accordingly robust.

  • Front panel made of grade 316 stainless steel
  • Impact- and shock-resistant according to IK10
  • IP65 protection rating with matching flush-mounted box
  • NDAA-compliant and therefore also suitable for authorities
  • CE, FCC and RCM certified
  • Reset button accessible only internally

Commissioning in a few steps

Setting up the AV-E21A can be completed quickly even without prior knowledge.

  1. Select a matching flush-mounted box if outdoor use with IP65 is desired
  2. Mount the device flush and connect the Ethernet/PoE cable
  3. Perform basic setup and SIP configuration via the web interface of the station
  4. Store the destination number or control centre for the emergency call
  5. Optional: wire relays and inputs for door or gate control
  6. Optional: integration into an existing SIP telephone system or emergency call centre

What is included in the scope of delivery

Please check the scope of delivery for completeness upon receipt and report missing or damaged parts to your supplier immediately. The flush-mounted box and the weather protection canopy are not included and are offered separately.

  • Akuvox AV-E21A intercom station1 piece
  • Terminal blocks for relays/inputs1 set
  • Quick start guide1 piece

Why the AV-E21A is suitable

Vandal-resistant

Grade 316 stainless steel housing with IK10 protection against deliberate damage.

Immediate emergency call

A single button press is enough to establish a voice connection to the control centre.

Weatherproof

With matching flush-mounted box, IP65 protection rating for continuous outdoor use.

Pure cable connection

Connection exclusively via Ethernet with Power-over-Ethernet.

Two relays

Independent control of e.g. door and gate directly from the call.

NDAA-compliant

Also suitable for public sector clients and authorities.

Practical application examples

  • Emergency call pillar in multi-storey car parks and on car parks
  • Emergency call station at underground stations and in public transport
  • Help call system on company and industrial premises
  • Emergency intercom in care facilities and medical centres
  • Emergency call point on university and school grounds
  • Supplement to existing SIP telephone systems as an additional emergency call point

The Akuvox AV-E21A combines an extremely robust stainless steel housing with simple, reduced-to-essentials operation via panic button – a reliable solution for all locations where help must be requested quickly and reliably in an emergency.

More about the Akuvox AV-E21A

Akuvox Knowledge Base

Guides, configuration help and further documentation directly from the manufacturer.

Go to Knowledge Base →

Frequently asked questions

What is the Akuvox AV-E21A and what is it used for?

The Akuvox AV-E21A is a vandal-resistant SIP emergency call station with a central panic button. It was specifically developed for use as an emergency call intercom and is suitable for multi-storey car parks, underground stations, company and industrial premises as well as educational and care facilities.

Is the AV-E21A equipped with a camera?

No. The AV-E21A is the pure audio variant of the Akuvox E21 series without a camera. Anyone who also needs video images will find the matching version with integrated camera in the E21V variant.

Do I need additional accessories for outdoor use?

Yes. For full outdoor use with IP65 protection rating, a matching flush-mounted box is required, which is available separately. For additional weather protection, a rain canopy can also be mounted.

How does the emergency call function work?

A press of the panic button immediately establishes a SIP voice connection to the stored remote station, for example a control centre or telephone system. The call runs hands-free via the integrated microphone and speaker.

Can the AV-E21A open a door or gate?

Yes. Via two relay outputs, for example a door and a gate can be controlled independently of each other via DTMF tone directly during the call.

Can the AV-E21A be integrated into an existing telephone system?

Yes. The AV-E21A supports SIP v1 and v2 and can therefore be integrated into virtually any existing IP telephone system or emergency call centre, independently of the manufacturer.

Is the AV-E21A suitable for use by authorities?

Yes, the AV-E21A is NDAA-compliant and therefore meets the corresponding security requirements for authorities and public sector clients.

What is included in the scope of delivery?

The scope of delivery of the AV-E21A includes the station itself, terminal blocks for relays and inputs, and a quick start guide. The flush-mounted box and rain canopy are separate products and are ordered separately as required.

Questions about the AV-E21A?

Our support team advises you free of charge on selection, installation and setup.

Available downloads
Datasheets
Datasheet 1

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Datasheet 1 (508.45 KB)

Akuvox AV-E21A

Buttons & Audio

  • Button: 1 call button
  • Microphone: -48 dB
  • Speaker: 8Ω / 1.5W
  • Audio codecs: G.711a, G.711μ, G.722
  • DTMF: In-band, out-of-band DTMF (RFC2833), SIP Info
  • Echo canceling function: yes
  • Voice Activation Detection: yes
  • Comfort Noise Generator: yes

Network

  • Protocols: IPv4, HTTP, HTTPS, FTP, DNS, NTP, RTP, TCP, UDP, ICMP, DHCP, ARP
  • SIP support: SIP v1 (RFC2543), SIP v2 (RFC3261)
  • WiFi / WLAN: no

Interfaces

  • Network: RJ45 (10/100 Mbps)
  • Alarm contacts: 2 x input, 2 x relay output
  • Card slot: no
  • Interfaces: none
  • Power supply: 12~24V DC / PoE (IEEE802.3af)

Housing & Installation

  • Housing material: stainless steel 316
  • Flush mounting box compatibility: single flush mounting boxes type 1299 and 86

Environmental conditions

  • Operating temperature: -20 °C ~ +55 °C
  • Storage temperature: -40 °C ~ +70 °C
  • Humidity: 10 - 90 % (non-condensing)
  • Weather / dust protection: IP65 (flush mounting box required)
  • Vandal / impact protection: IK10

Certifications

  • CE, FCC, RCM, NDAA compliant

Dimensions

  • 120 × 210 × 45.6 mm (W × H × D)
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Compatible mounting brackets

AV-E21X BACK BOX E21X Flush Mount Housing
AV-E21X BACK BOX E21X Flush Mount Housing
AV-E21X BACK BOX Flush Mount Housing for Akuvox E21X IP Door Intercom System, robust steel backbox for wall mounting indoors and outdoors.
Product number: 5119000100

Regular price: €28.50
AV-E21X RAIN Weatherproof Cover E21
AV-E21X RAIN Weatherproof Cover E21
AV-E21X RAIN weatherproof cover for Akuvox E21X door intercom systems, aluminum rain cover for surface mounting outdoors.
Product number: 5119000101

Regular price: €41.20
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Video stations

Akuvox AV-C313S Video Station
Akuvox AV-C313S Video Station
Color Options: White
The Akuvox AV-C313S is a video station with a 7-inch touchscreen SIP indoor unit for up to 8 intercom stations and surveillance cameras.
Product number: 5132010110

Regular price: €95.00
Akuvox AV-S562W GRAY Video Station
Akuvox AV-S562W GRAY Video Station
The Akuvox AV-S562W GRAY is a Wi-Fi video station with a 7-inch touchscreen SIP indoor unit for intercoms and surveillance cameras.
Product number: 5132010130

Regular price: €171.00
Akuvox AV-C316S SILVER Video Station
Akuvox AV-C316S SILVER Video Station
The Akuvox AV-C316S SILVER is an Android video station with a 7-inch touchscreen for up to 8 intercom stations and smart home integration.
Product number: 5132010126

Regular price: €198.00
Akuvox AV-S563W GRAY Video Station
Akuvox AV-S563W GRAY Video Station
The Akuvox AV-S563W GRAY is an Android video station with an 8-inch touchscreen, Wi-Fi, Bluetooth, and voice distortion.
Product number: 5132010140

Regular price: €199.50
Akuvox AV-IT88S GRAY Video Station
Akuvox AV-IT88S GRAY Video Station
The Akuvox AV-IT88S GRAY is an Android video station with a 10-inch touchscreen, Wi-Fi, and voice distortion.
Product number: 5132010160

Regular price: €361.00
Akuvox AV-S567W GRAY Video Station
Akuvox AV-S567W GRAY Video Station
The Akuvox AV-S563W GRAY is an Android video station with an 8-inch touchscreen, Wi-Fi, Bluetooth, and voice distortion.
Product number: 5132010150

Regular price: €370.50
Akuvox AV-C319A Video Station
Akuvox AV-C319A Video Station
The Akuvox AV-C319A is an Android video station with a 10-inch touchscreen, Wi-Fi, Bluetooth, and voice control.
Product number: 5132010180

Regular price: €449.00
Akuvox AV-X937 Video Station
Akuvox AV-X937 Video Station
The Akuvox AV-X937 is the intelligent video station with a 15.6-inch Full HD touchscreen, Android 14, and voice assistant.
Product number: 5132010170

Regular price: €829.00
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IP phone

Akuvox AV-S560 IP Intercom
Akuvox AV-S560 IP Intercom
The Akuvox AV-S560 is a compact IP intercom with SIP support and a door opener button.
Product number: 5151010100

Regular price: €75.00

Manufacturer Information:

AKUVOX (XIAMEN) NETWORKS CO., LTD.

10/F, No.56 Guanri Road
Software Park II

Xiamen 361009
China

Tel: +86-592-2133061

Email: sales@akuvox.com

Responsible person:

Didactum® Security GmbH

Im Mühlenfeld 4

48163 Münster
Deutschland

Fon: (+49) 2501 92 90 160 oder (+49) 171 33 11 577

Email: info@didactum-security.de

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