Features:
- Large 10-inch diameter horn
- Fully adjustable mounting hardware included
- Quick and easy installation
- SIP compliant
- PoE powered (class 3, <13 Watts)
- Paging prioritization
- Plays audio from standard multicast sources
- SIP endpoint or multicast group member
- Red call status LED indicator
- Automatic Noise Canceling (ANC) feature for operation in noisy environments
- Proprietary VOX switching eliminates the need for "Push to Talk" mode
- Selectable auto-answer feature for monitoring
- Compatible with Polycom multicast paging
- Built-in high-efficiency 6 Watt class D amplifier
- SIP/Multicast: SIP page, SIP page and zoned multicast receive
- Support for access code to prevent unwanted SIP calls
- Hangs up on: busy signal, time-out, or touch tone command
- Network remote speaker volume control
- Automatic Gain Control (AGC) to automatically increase ring volume to compensate for ambient noise
- Diagnostics for testing microphone and horn driver
- Programmable pre-page alert tone
Applications:
- Amplified SIP endpoint or multicast IP paging for: Schools, Hospitals, Retail Stores, Office Spaces, etc.
- Provide background music and sound masking
- Make standard and/or emergency SIP phone calls via handsfree talk-back speaker
- Background music and emergency calls for: commercial buildings, distribution centers, service/shop areas, gas stations, indoor/outdoor recreation and sports facilities, transport terminals, etc.
Certifications:
- CE
- Canada ICES
- FCC Part 15
- SIP
The 300TB-IP Paging Horn with Talk-Back can be used for: standard one-way SIP endpoint paging, two-way conversations via SIP endpoint paging, one-way multicast paging, and making standard or emergency two-way SIP calls initiated from the optional auxiliary switch input. The microphone enables talk-back and also monitors room noise to automatically increase the speaker volume when necessary.
An optional auxiliary switch input allows a hard wired button or switch to initiate a SIP call. The button can be mounted on the wall or concealed under a desk, etc. A momentary button press will initiate a standard call, while holding the button for 3 or more seconds will initiate an emergency call.
The 300TB-IP features a high efficiency 6 Watt class D amplifier capable of driving the horn at up to 113 dB SPL at 1 meter.
For more information, please see 
User Manual
