The BM11 V2 is a compact SIP voice intercom core board designed for industrial security, access communication, paging, and emergency call applications. Built on Becke Telcom's mature VoIP technology, it supports standard SIP communication and delivers stable media transmission over IP, RTP, and RTSP networks.
BM11 V2 provides the essential hardware and software foundation required to build SIP intercom terminals, emergency call points, security voice devices, and IP paging products. It integrates Ethernet networking, audio input and output, emergency call control, dry-contact input, relay output, and web-based configuration into a compact board-level module.
The board is compatible with mainstream SIP-based IP PBX, softswitch, and IMS platforms, including Asterisk, BroadSoft, 3CX, and Elastix. This makes it suitable for OEM device development, industrial intercom integration, security communication terminals, and custom SIP voice products.
Standard SIP 2.0 protocol support based on RFC3261 and related RFC standards.
Two SIP lines for flexible voice communication scenarios.
Emergency call button interface for one-touch calling.
Built-in dry-contact input and relay output for linkage with external systems.
Relay output control through remote DTMF, server commands, input linkage, or call status.
Integrated audio amplifier output up to 4 Ohm / 3 W.
Supports G.729, G.711, G.722, and G.726 voice codecs.
Supports external 12 V DC power or 48 V PoE power supply.
Web-based management, configuration import/export, and online software upgrade.
The BM11 V2 architecture is designed for practical SIP intercom deployment. It supports PoE or DC power input, Ethernet communication, microphone input, speaker output, line-out audio, dry-contact control, relay linkage, and debug access. This integrated structure helps reduce development complexity for SIP-based audio terminals.
BM11 V2 includes the main interfaces required for embedded SIP voice communication products. The CN1 interface provides 12 V DC input and dry-contact input/output. The RJ-45 WAN port supports 10/100BASE-TX networking with Auto-MDIX. Dedicated interfaces are provided for microphone, speaker, line-out, speed-dial keys, and debug UART.
The speed-dial key interface supports LED-equipped keys, making it suitable for emergency call panels, access intercoms, help points, and security communication products that require simple user operation and visible call status indication.
| Item | Specification |
|---|---|
| Communication Protocol | SIP 2.0 (RFC3261) |
| Voice Stream | RTP |
| Voice Codecs | G.729, G.711, G.722, G.726 |
| Audio Amplifier | Maximum 4 Ohm / 3 W, 10% THDN |
| Power Supply | 12 V / 1 A DC or 48 V PoE |
| WAN Port | 10/100BASE-TX, Auto-MDIX, RJ-45 |
| Microphone Input | Electret condenser microphone recommended, sensitivity -38 dB, impedance 2.2 K Ohm, bias voltage 2.2 V |
| Line-Out | Software-adjustable output volume, up to 1.2 Vpp |
| Operating Temperature | -20°C to 50°C |
| Relative Humidity | 10% to 95% |
| Board Dimensions | 76 × 77.5 × 21 mm |
BM11 V2 is suitable for SIP intercom panels, emergency help points, access control voice modules, public security terminals, industrial paging devices, embedded voice communication systems, and customized OEM/ODM SIP terminals. It can be deployed in industrial sites, transportation facilities, campuses, buildings, control rooms, and security management environments.
With SIP protocol compatibility, PoE/DC power options, dry-contact linkage, and compact board-level integration, BM11 V2 helps product developers and system integrators build reliable voice intercom devices for professional communication environments.
For projects that require SIP voice, intercom, paging, alarm linkage, and industrial communication integration, Becke Telcom can provide board-level modules, SIP endpoints, gateways, paging devices, and system-level communication solutions. BM11 V2 can serve as a flexible SIP intercom core for device manufacturers and solution integrators building reliable communication terminals.
Becke Telcom專門爲地鐵、鐵路、隧道、石化、核能、海上和造船部門提供工業和防爆通信解決方案。其產品組合包括PAGA調度系統、公共幫助點和SOS解決方案，以及具有集成公共地址、對講機和語音通信功能的工業IP和SOS電話。
