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 Home -> Products - > Smart SIP-based IP Intercom > Akuvox E21A, SIP-based IP Emergency Intercom

Akuvox E21A, SIP-based IP Emergency Intercom

E21A is a vandal-resistant, SIP-enabled emergency call station designed for safeguarding security 

in public spaces. Its advanced communication technique enables immediate and smooth emergency

intercom. It is capable of weathering any harsh outdoor environments thanks to its sturdy structure and robust 



  • SIP

  • 1 panic button

  • 2 input relays and 2 output relays 

  • Premium audio quality

Physical Features

  • Body material: 316 grade stainless steel

  • Button: 1 panic button and 1 reset button on board

  • Call indication: 1 RGB LED (red, green, blue)

  • PoE IEEE802.3af

  • Power consumption: 12V DC input, <12W

  • Enclosure rating: IP65

  • Installation: flush mounting, fit in Clipsal 164/4 back box

  • Dimensions: PCB-130x65mm, with flush mount kit-210x120x61mm

Interface Features

  • 2xRJ45 10/100M Mbps Ethernet ports

  • Input relay: 2 relays for alarm alert

  • Output relay: 2 relays for door opener

SIP Features

  • SIP v1 (RFC2543), SIP v2 (RFC3261)

  • Line: 2 SIP accounts

Audio Features

  • 1 built-in microphone with IP67 rating

  • 2W speaker with IP66 rating

  • Codec: G.711a, G.711μ, G.722, G.729 and LPCM

  • Speech quality: 7 kHz

  • Echo cancellation

  • Voice activity detection

  • Comfort noise generator

Phone Features

  • Auto-answering

  • Volume control

  • Direct IP calling

Network Features

  • Static IP or DHCP

  • 802.1Q VLAN

  • NTP for auto time setting

Administration Features

  • Configuration management: web-based management or auto provisioning

  • Auto-provisioning: FTP/TFTP/HTTP/HTTPS/PnP/DHCP

  • Multi-language support

  • TR069

  • SNMP


  • Compliance with CE & FCC

Application Scenarios

  • Education: campuses

  • Healthcare: hospitals, medical centers

  • Logistics & Transportation: airports, parking facilities

  • Industries: industrial parks of Manufacturing, Energy, Metal & Mining, Chemical industries