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8188 IP Ceiling Speaker

8188 IP Ceiling Speaker

Wideband IP Ceiling Speaker for Voice Paging, Emergency Alerting & Playing Music – PoE

The 8188 IP Ceiling Speaker is a SIP speaker used in a drop ceiling for voice paging, emergency, and playing music. The speaker is a fully compliant 3rd party SIP endpoint. As a result, this IP ceiling speaker is compatible with most hosted / cloud and premise-based VoIP telephone systems.

SKU: 8188 Category:


  • Public address (PA) IP speaker.
  • Secure SIP using TLS and SRTP.
  • Multicast scalable.
  • Wideband HD voice for high intelligibility speech.
  • Dynamic volume control responsive to ambient noise levels.
  • Talkback capable speaker.
  • Customize WAV files for emergency notification / alerting and telephone loud ringing.
  • Configuration via user friendly web interface or auto-provisioning.
  • PoE (IEEE 802.3af).
  • Ideal for a school or college classroom, office, lunch room, kitchen, restaurant, etc.


Wideband IP Speaker

The 8188 SIP Ceiling Speaker supports the Wideband G.722 HD voice codec. Consequently, there is high intelligibility and clarity of audio from the speaker for IP paging of voice announcements and emergency notification. The result is better STI-PA scores, which is important in meeting standards such as NFPA 72 and NEMA SB-40 for Emergency Communication in Education. For example, the 8188 IP speaker 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.

Wideband audio

Clear, Crisp, Rich Audio – for Voice and Background Music

The 8188 is a music capable speaker supporting the Super-Wideband frequency response. Using the music input of the 8301 IP Paging Adapter, music can be streamed to the 8188 speaker as multicast. The music stream can be configured at a lower priority to allow voice paging, emergency alerts and scheduled tones / announcements to interrupt background music.

Scale Algo IP Paging Speakers with Multicast

The 8188 SIP Ceiling Speaker supports multicast send or receive. As a result, many Algo IP speakers can be deployed to cover any size building, campus (e.g., classrooms in a school, college or university) or enterprise.  There is no limit to the number of devices part of a multicast, and a minimum of network traffic activity is utilized.

Algo 8188 Multicast technology

A single registered 8188 can be configured to multicast to any number and mix of Algo IP speakers, strobe lights, paging adapters and multicast supported IP telephones.

Multicast provides cost-effective scalability using a minimum of SIP registered endpoints, as only the endpoint designated to send the multicast needs to be registered. Devices configured to receive the multicast do not need registration.

Support is available for RTP multicast, in addition to Polycom Group Page, Singlewire InformaCast (part no. 8188-IC) and Syn-Apps Revolution.

Any combination and number of Algo IP endpoints can be configured as a multicast for emergency alerting to cover any size room, building, campus or enterprise.

Using Multicast for Zone Paging

Multicast zone paging for up to 50 zones can be configured from a single 8188 IP speaker. Zones can be selected one of two ways. One option is to map multicast page zones to individual SIP extensions on the speaker. Fifty (50) page extensions are available for this purpose. Alternatively, in order to minimize SIP registrations, multicast page zones can be configured in the SIP Audio Alerter as a DTMF key press selection using the dial pad of telephone making the page call.

Note: Additional page zones can be configured by registering individual Algo IP speakers for specific room paging (e.g. school classroom). Speakers with SIP registrations can also be configured to be a member / receiver of multicast zones.


Dynamic Volume Control & Talkback

Speaker volume can be configured via the web GUI of the endpoint. However, the 8188 speaker’s microphone can also be used to monitor and adapt speaker volume according to background noise levels. This unique Algo feature is called Ambient Noise Compensation. Where many speakers are deployed in a room / hallway / common area, volume can self-adjust to the background noise levels at each speaker location. Ambient Noise Compensation helps to ensure that announcements and alerts are heard but never too loud. Talkback is supported in the 8188. This feature can be enabled for a page call using the speaker’s microphone.

Algo 8188 Ambient Noise Detection Technology

Multi-Application SIP Extensions

Multiple SIP registrations are available in this IP speaker, including Page (50), Emergency Alert (10) and Ring (10) extensions. On Page, the speaker will auto-answer when called for making public address (PA) voice announcements. For Ring and Emergency Alert extensions the speaker will play a configurable WAV file from 1GB device memory when the extension is called (e.g., ring tones for telephone alerting, notification alerts for safety / security / emergency events and informational announcements).

Emergency Notification Alerting

For notification alerting of safety, security and emergency events there are two activation options available:

  • Dial an Emergency Alert extension.
  • Connect a button to the speaker’s relay input.

Up to 10 Emergency Alert extensions are available to register on the 8188 SIP speaker, allowing for different types of alerts to be activated when the extension is called (e.g., lockdown, evacuation, shelter, all clear, etc.). Custom WAV files can be uploaded to 1GB device memory. A Call to Cancel feature is available to allow the emergency alert to play continuously for as long as desired until cancelled. Alternatively, the WAV file alert can be configured to play for a pre-set duration. The user does not have to remain on the phone when calling the Emergency Alert extension. As soon as the call is made the Algo endpoint will play the WAV file as configured, making emergency alerting simple and efficient from any telephone or device in the UC environment. If the Call to Cancel extension is configured, the same cancelling extension will apply to any of the Emergency Alert extensions registered.

As an alternative option for emergency alerting, any button providing a contact closure, including the Algo 1202 and 1203 buttons, can be wired to the 8188 relay input using a 24 gauge single twisted pair. Three configuration options are available via speaker’s relay input upon button activation:

  • Play and/or multicast an alert
  • Call a target extension and play a discrete WAV
  • Call a target extension and have a two-way call via the speaker’s microphone

Algo 8188 Emergency Notification

Power for the Algo 1202 and 1203 buttons is provided by the available PoE from the 8188 IP speaker.


IP Loud Ringer

The Ring extension on the 8188 is used for loud ringing / night bell applications. The 8188 will play a ring tone WAV file saved in 1GB of device memory when this extension is called. Typically the speaker will be configured in a ring group to include a telephone(s). The WAV file will play for the duration of the ring event until the call is answered. Several default ring tones are available in 8188, however, custom WAV files can be uploaded to the device.

Algo 8188 SIP Call diagram

Up to 10 Ring extensions are available to register on a single speaker for this purpose, thereby allowing one speaker to act as a loud ringer for several telephones by configuring different ring groups for each registered Ring extension.

Where audible and visual telephone ring alerting is required, the 8188 can be combined with an Algo strobe light using multicast or a relay.

Common Deployments for Algo 8188 SIP Ceiling Speakers

Together with the Algo 8301 IP Paging Adapter & Scheduler, a public address (PA) system requiring multiple zones with scheduled bells / announcements can be easily configured and synchronized with IP clocks using the 8188 and other Algo IP speakers.

If desired, the 8301 IP paging adapter can also provide audio to a legacy analog paging system via its line level output, and simultaneously multicast this audio to additional Algo IP endpoints.

To sum up, the 8188 is a self-amplified SIP speaker. Therefore no separate amplifier is required. The endpoint is powered via PoE (IEEE 802.3af). Four screw clamps allow for blind mount installation of the 8188 in a drop ceiling, however, the 81X8TBR T-Bar Bracket or the 81X8T2x2 T-Bar 2’x2′ Panel are available accessories to further stabilize the speaker, if desired. The 8188MEM Hydrophobic Membrane Screen is also available for placing the speaker in areas subject to moisture (e.g. shower). A 1/4″-20 threaded opening is available on the 8188 for Redi-Rod suspended mounting or connecting an eye-bolt for tethering the speaker, if desired. The product is CSA/UL, FCC and CE certified.


Benefits of the PoE Algo SIP Ceiling Speaker

  • Super-Wideband audio clarity and intelligibility for public address (PA) and playing music.
  • Network managed and supervised SIP and multicast endpoint.
  • Fully zone configurable via a web interface. Multicast zones are not dependent on wiring to speaker.
  • PoE (IEEE 802.3af) eliminates need for local power supply, and simplifies wiring infrastructure and management.
  • Eliminates narrowband FXS port or ATA.
  • Multi functional IP speaker for voice paging, emergency notification and ring alerting. Easily integrate with the Algo 8301 IP Paging Adapter & Scheduler for automatically playing tones and/or announcements for scheduled events.


Singlewire Informacast

InformaCast Compliant IP Speaker

Algo InformaCast IP endpoints are fully compliant to register seamlessly with Singlewire InformaCast for emergency notification and public address.

The Algo 8188 SIP Ceiling Speaker is also sold as the Algo 8188-IC InformaCast SIP Ceiling Speaker, a fully InformaCast Compliant endpoint for voice paging, emergency alerting & playing music. The speaker is also a fully compliant 3rd party SIP endpoint. As a result, the Algo 8188-IC InformaCast SIP Ceiling Speaker is compatible with most hosted / cloud and premise-based VoIP telephone systems.

The 8188-IC together with other InformaCast endpoints are scalable to meet the needs of any size project. Algo IP InformaCast compliant endpoints support multicast send or receive. As a result, many Algo IP endpoint can be deployed to cover any size building, campus, or enterprise.  There is no limit to the number of devices part of a multicast, and a minimum of network traffic activity is utilized.

All features and specifications of the Algo 8188 SIP Ceiling Speaker remain in the Algo 8188-IC InformaCast SIP Ceiling Speaker.



Power SourcePoE (IEEE 802.3af Class 0) 48 V, 15.4 W
Max Power (at Device)12.95 W
Idle Power2.5 W
SIP Extensions50 Page (Capable of hands-free talkback)
10 Emergency Alert
10 Ring
SIP Signalling/Transport ProtocolsUDP, TCP, RTP
SecurityTLS, SRTP, Mutual Authentication
Audio CodesG.711 u-law, G.711 A-law, G.722 Wideband
RTP MulticastSend and Receive 50 Zones
Audio CodecsG.711 u-law, G.711 A-law, G.722 Wideband, Opus Fullband
Third PartiesRESTful API
Poly Group Page™
InformaCast® (additional license required)
Intrado Revolution®
Microsoft Teams®
Configuration & Provisioning
ConfigurationWeb interface or provisioning server
Web InterfaceHTTP, HTTPS
ProvisioningTFTP, FTP, HTTP, HTTPS
DHCP Options 66, 150, 160
Reboot via SIP ‘check-sync’
SupervisionCompatible with Algo Device Management Platform (ADMP), Algo 8300 IP Controller, any third party SNMP monitoring software, and RTCP
NetworkingIPv4, IPv6, DHCP, VLAN, MDNS
Link Layer LLDP, CDP
SecurityIEEE 802.1X
NATSTUN, TURN, CRLF Keep Alive, SIP Outbound
Address Resolution DNS, SRV Record
RedundancySecondary and tertiary SIP server
TimeNTP Server (up to four)
Speaker6.5” (16.5 cm) coaxial with PEI Dome Tweeter. Mica filled polypropylene cone.
SPL 97 dBA (1 kHz, 8 W, 1 m)
MicrophoneOmnidirectional – talkback and ambient noise monitoring
Audio Memory & Format1 GB audio storage for WAV or MP3 files
Audio ControlsVolume, AGC, Latency, LF Cut
Anti-Feedback DelayCache to memory and release
Frequency Response55 – 18,000 Hz (-10 dB)
Audio DelayProgrammable 1-1000 ms synchronization delay
Max Audio Power8 W
Relay InputNormally open or normally closed dry contact with supervision. Algo 1202 Call Button, 1203 Call Switch, 1204 Volume Control or EOL resistor termination
Relay Output Max 30 V 50 mA (normally open)
Nominal 12 V source, current limited to 40 mA. Typical supervision resistor value = 1 kΩ
Relay Input Current Draw Detection ThresholdsActiveIdleTamper
Normally Open> 4 mA< 4 mAN/A
Normally Open with Supervision > 20 mA4 - 20 mA< 4 mA
Normally Closed> 4 mA< 4 mAN/A
Normally Closed with Supervision4 - 20 mA> 20 mA< 4 mA
Environmental & MechanicalActive
Environmental0 to + 40 °C (32 to 104 °F); 10-95% RH non-condensing. Dry indoor locations only.
Dimensions (Product) 8″ (20.5 cm) Diameter without trim ring, 9.8″” (24.9 cm) with trim ring, Total height 6.9″ (17.5 cm)
Weight (Product)4.5 lbs (2.0 kg)
Weight (Shipping)6.1 lbs (2.7 kg)
MountingBlind mounts into 8″ (20.5 cm) hole. Clearance requirement of 5.5″ (14.0 cm) above ½” (1.27 cm) gypsum board ceiling.
RoHS, CE, FCC Class A, CISPR 22 Class A, CISPR 24, CSA/UL (USA & Canada), EN60950


  • IP paging from a drop ceiling location in a school classroom / hallway / common area, retail store, hospital and commercial office space. Note: Placement of the speaker in areas subject to moisture (e.g., shower) is possible when fitted with the 8188MEM Hydrophobic Membrane Screen.
  • Multicast public address (PA) announcements to many speakers for emergency (e.g., lockdown, evacuation, reverse evacuation, medical emergency, safety alert, etc.) and non-emergency applications.
  • OSHA or workplace safety compliance.
  • IP loud ringing / ringer or night bell to avoid missed calls in a higher noise environment where telephone ringing is difficult to hear (e.g. call center, restaurant, retail store, etc.).
  • Play background music (i.e., stream music as a multicast from the 8301 music input).
  • Schedule announcements / tones to play automatically with the Algo 8301 scheduler. The 8301 will multicast audio to any model of Algo IP speaker and paging adapter. For example, school (i.e., class changes, recess, playing an anthem, etc.), retail and healthcare announcements (i.e., store closing, visiting hours, etc.), and workplace shift changes, breaks, etc.
  • Combine with all variety of Algo visual and audible IP endpoints to create more comprehensive public address (PA) and notification alerting solutions.

Compatible Accessories





Please follow the appropriate link below to obtain the firmware download for your device.