iSpeaker B20

The SIP based audio system iSpeaker B20 utilizes the built-in paging capability already inherent in most modern IP PBX systems and enhances this to improve end user experience by providing a dedicated high performance digital amplifier on which to broadcast announcements or play background music.


Basic Features
Support G.711,G.722,G.723,G.726,G.729 audio codecs
Support SIP2.0 (RFC3261)and related RFC protocol
The DSP integrated echo cancellation and noise suppression provides clearer voice
Easy management and configuration from Web interface
Support encrypted communication
Online update of software


Basic Information 
Telephony Protocol: SIP 2.0(RFC3261) 
Keypad Expansion: Support 4×6 for a total of 24 keys.   

Microphone: 1 onboard connector 
Speaker Output: 10W 
Speaker Impedance:4Ω
DSP: Support echo cancellation and noise suppression  

Voice Flood 
Supported protocol: RTP 
Codec: G.711,G.722,G.723,G.726,G.729, etc.. 

Other Interface 
Input Power: 12V/2A DC 
LAN: 2x10M,RJ45 
RS232: Optional 
GPO: 4 programmable output pins 

Operation Temperature: 0℃ to 40℃  
Storage Temperature: -40℃ to 70℃  
Humidity: 10% to 95%,No Dew 

System Topology

                                   Connect With Audio Speaker 

                                   Connect With Audio Amplifier


Inner box  265mm × 115mm × 60mm
G.W./unit  0.5 KG



Name Version Size Release Date Download
iSpeaker Firmware V1.1.3 V1.1.3 5.90 MB Aug. 10, 2017
iSpeaker B20 Datasheet V1.0 630.99 KB Aug. 31, 2015
SIP SPeaker UserManual V1.0.0 910.41 KB Dec, 15, 2015
iSpeaker Firmware V1.1.0 V1.1.0 5.60 MB Sept. 9, 2016
iSpeaker Firmware V1.0.9 V1.0.9 5.81 MB Aug. 10, 2015
iSpeaker Firmware V1.1.2 V1.1.2 5.86 MB Mar. 28, 2017