Tonmind IP Paging Adapter SIP-T21

SIP-T21, 48K OPUS Audio Codec, MIC, headset and speaker interface. Alarm: GPIO, HTTP URL and relay out. Compatible with VoIP SIP devices, ONVIF VMS/NVR.

Item NO.:
SIP-T21
Order(MOQ):
1
Payment:
T/T,Western Union, Paypal
Product Origin:
China
Color:
Black
Lead Time：
1 Week
Weight：
250g

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Product Detail

Product Description

The Tonmind SIP-T21 is a compact and powerful SIP paging adapter designed for seamless integration with VoIP systems. It supports two-way intercom communication, high-quality 48K OPUS audio codec, and is compatible with SIP and ONVIF protocols. Equipped with a built-in 15W amplifier, it allows direct connection to speakers and microphones. The device supports pre-recorded messages (WAV/MP3), multiple alarm triggers (GPIO, HTTP URL, relay out), and offers flexible power options via PoE or DC 12V/24V. With dual LAN ports and comprehensive I/O interfaces, the SIP-T21 is ideal for upgrading analog paging systems to IP-based networks. It's perfect to be applied in various PA System, for instance, school, retail, commercial centers, etc.

SIP Paging Adapter Feature

● Two-way intercom communication

● Support 48K OPUS Audio Codec
● SIP & ONVIF protocol compatibility
● Pre-recorded message(WAV/MP3）
● Alarm: GPIO, HTTP URL and 2 × Relay out
● MIC, Headset and Speaker Interface
● PoE + LAN interface, Reset Control

Specification

Audio
Decoding	OPUS 48KHz, MP3 44.1KHz, G.722-ADPCM 16KHz, G.711-PCMU 8KHz, G.711-PCMA 8KHz, G726 8KHz, GSM 8KHz, LPCM-16bit-Stereo/Mono 44.1kHz
Network
Security	Password protection, IP address filtering, Digest authentication, User access log, Firewall
Network Protocol	SIP, ONVIF, HTTP, HTTPS, IPv4, TLS, RTSP, RTP, SRTP, RTCP, DHCP, DNS, NTP, TCP, UDP, IGMP, ICMP, ARP, SNMP v1/v2c/v3, Bonjour
Network Interface	10/100 Base-TX, RJ45
SIP Features	Supports the SIP protocol for integration with VoIP systems and SIP/PBX platforms Supports secondary/backend SIP server, IPv4 (IPv6 in development). Supports codecs: OPUS, G722, G711U, G711A. SIP DTMF (RFC 2976, RFC 2833/RFC 4733)
Amplifier
Amplifier	15W
General
Material	Metal
Power Supply	PoE or DC 12V
Interface	2 × LAN, 1 × MIC input, 1 × Headset output, 1 × Speaker output, 2 × IO Alarm input, 2 × Relay
Dimensions	112mm × 105mm × 29mm
Weight	250g
Languages	English, Italian, Russian, Korean, Chinese Simplified & Traditional
Warranty	2 years
Package Includes	SIP Paging Adapter Quick Start Guide
Customization	Accept OEM, ODM

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Interface Diagram

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