IP Paging

User Manual

Data Sheet

Product Overview

ALGO 8188 SIP Ceiling Speaker for voice paging, emergency notification, and background music.

Wide-band G.722 codec support provides optimum speech clarity and intelligibility in an HD Voice environment. Voice paging and emergency announcements can be easier to understand with wide-band, particularly in a noisy environment. The super-wide-band frequency response enables music quality far superior to narrow band IP or transformer coupled analog speakers.


The speaker may be configured as a third party SIP endpoint compatible with leading premise or hosted UC providers including Avaya, Broadsoft, Cisco, Digium Asterisk, Metaswitch, Mitel, and more. For multiple speaker deployments, additional speakers do not require a SIP license. Deployed as a SIP endpoint the 8188 can be configured to auto-multicast to any number of additional speakers as required, providing cost effective scalablity as well as minimizing network traffic.

In a VVX Polycom environment, hosted or in conjunction with Microsoft Lync, the speaker may be configured to join a Polycom Group Page for coverage in common areas or for sound reinforcement. No SIP registration is necessary. For all multicast page applications, zoned paging is supported.

Algo speakers are well suited for both general paging and emergency notification in retail, education, healthcare, and manufacturing. Wideband audio capability is helpful in meeting OSHA requirements as well as the NEMA SB-40 2010 standard for emergency communication in education. To support the reference to the intelligibility requirements of NFPA 72, the Algo 8188 was measured to have a STI-PA intelligibility score of 0.95 in an office environment at 70 dBA level with ambient noise of 49 dBA.

The integrated microphone enables talk-back and listens for ambient noise to automatically increase page volume when necessary1. This features enables a consistent ratio of page to ambient noise level without being unnecessarily loud.

An auxiliary input allows an optional wall button or external switch to initiate a SIP call or play a WAV file stored in speaker memory. The WAV file may also be played by dialing the speaker’s second SIP extension, configured for ring/announcement activation only.

For ease and simplicity, the PoE blind-mount speaker installs quickly into the ceiling, and announces its static or DHCP IP address for access to the intuitive web interface. Additionally, the 8188 speaker supports auto-provisioning for minimal touch configuration.


  • Wideband G.722 codec support for HD Voice
  • Multicast for cost effective scalability – mix with any number and variety of Algo speakers, strobes and/or paging adapters (e.g. 8128, 8180, 8186, 8188, 8301, 8373)
  • Multicast receive or broadcast capability
  • Polycom Group Page
  • SIP compatibility with all leading UC vendors
  • Configurable through web interface
  • Supports auto-provisioning
  • Internal memory for uploaded WAV files or recorded messages
  • Dual SIP extensions for page or notifictaion
  • Programmable relay (dry contact) output
  • Programmable relay (dry contact) input or illuminated and supervised wall button
  • PoE (Power over Ethernet)


Item Description
Power Input 48 V PoE IEEE 802.3af Class 0 (Max 12.95 W – Idle nominal 2.5 W)
Speaker 6.5″ (16.5 cm) Coaxial with PEI Dome Tweeter. Mica filled polypropylene cone.
Audio Codecs G.711 A-law, G.711 u-law, G.722,Polycom Group Page, OGG Vorbis(other codec support available on request)
SIP/Multicast SIP Page, SIP Page & Zoned MulticastStream, Zoned Multicast Receive, SIP Ring Alert, SIP Ring Alert &Zoned Multicast Stream.
Server Redundancy Primary, secondary, tertiary
Processor Linux OS ARM Cortex-A8 32-Bit RISC Processor with Crypto Accelerator
Frequency Response 55 – 18,000 Hz (-10 dB)
Sensitivity 88 dBA 1m/1W (1 kHz)
Dispersion Angle: 140° (2 kHz -6 dB)
Audio Memory 1 GByte
Relay Output Normally open or normally closed. Max rating 30 V 50 mA
Relay Input Normally open or normally closed dry contact supervision. Algo 1202 Button, Algo 1203 Switch, EOL resistor termination.
Configuration Web interface or auto-provisioning server
Provisioning TFTP, FTP, or HTTP
Environmental 32 to 104 deg F (0 to + 40 degC); 10-95% RHnon-condensing. Dry indoor locations only. (Contact Algo for extreme environments)
Dimensions 8″ (20.5cm) Diameter without trim ring
9.8″ (24.9cm) with trim ring
Total height 7.0″ (17.8cm)
Mounting Blind mounts into 8″ hole. Clearance requirement of 5.5″ (14.0cm) above ½” (1.27cm) gypsum board ceiling
Weight 6 lb (2.7 Kg)
Compliance EN60950:2001, IEEE 802.3-2008, RFC3261, RoHS, CE, FCC Class B, CISPR 22 Class B, CISPR 24, CSA/UL (USA & Canada), UL2043

Note: In the interests of continuing product improvement, specifications are subject to change without notice.