uCMK64-VoIP

Hardened Voice Communications

The uCMK64-VoIP module combines the real-time performance of a microcontroller with SIPxtream voice communications and Mbarx Secure IoT.

Buy Now

All talk, no drop

Integrated SIP signalling stack, multicast PA audio streaming, recorded announcement playback and audio intelligibility enhancements make the uCMK64-VoIP a versatile communications module for intercoms, handsets, PA systems or radio-over-IP convergence.

Hard and fast reliability

Built using an industrial-grade microcontroller and powered by an RTOS that’s achieved medical and aerospace certifications, the uCMK64-VoIP boots fast with unparalleled reliability for hardened communications applications.

Secure connectivity made easy

Managing field devices isn’t easy. With call home capability, auto firmware updates, provisioning, management and industry-leading security, the uCMK64-VoIP does the hard work for you.

Preloaded and ready to roll out

With our fully tested and verified SIPxtream and Mbarx firmware preloaded at our factory, you don’t need to mess around with BSPs or SDKs. Get right down to integration using autonomous operation, an I/O control interface or our simple host protocol and tools to help you.

Applications

Real-time voice communications for industrial grade devices.

Intercom Systems

Public safety intercoms and help points
Building entrance and access control systems
Elevator cabin, stairwell and parking garage communications
Passenger assistance communications
Patient care and nurse call systems

Public Address and Notification

School bells and communications systems
Campus wide PA paging systems
Fire panels and public safety communication
Automated evacuation messaging and instruction
Passenger information systems
Mass transportation, station and airport comms

Radio Systems and Specialized Applications

DMR/LMR radio convergence
Radio-Over-IP backhaul
Wi-Fi belt packs, headsets and wearables
Industrial equipment integration
Presentation and conference systems

Product Specifications

Ready for use, comes preloaded with SIPxtream voice communications and Mbarx Secure IoT to get you to market fast.

Development Kit

uCMK64-VoIP module
Module host board, cables, power supply
Support site access (1 year)
Installation and maintenance support (1 year)
Documentation, integration schematics
Schematics references for PoE, class-D, I/O TVS and isolation
SIPxtream VoIP and Intercom firmware with Mbarx support (PIP)
SIPxtream PA Receiver firmware with Mbarx support (PA)
SIPxtream PA Transmitter with Mbarx support (PAT)
Mbarx System Manager tool (Win/Mac free trial)
Mbarx Virtual Control Panel tool (Win/Mac)

Buy Now

Features

Hardware

Core Processor and Memory

NXP Kinetis K64 microcontroller
32-bit, Arm^® Cortex^®-M4 core
256KByte SRAM
1MByte NOR flash
1MBit SPI flash (optional)

Connectivity and Peripherals

10/100 Ethernet
802.11 bgn Wi-Fi (optional)
SPI, CAN, USB, I2C, SAI/I2S
UART (console)
UART (host protocol)
Realtime Clock/Calendar (RTC)
Audio subsystem with class-D amplifier
Up to 52 GPIO

Audio Connectivity

16-bit PCM with 8KHz, 16KHz sample rates
Headphones out – Mono, 1.25 Vrms (3.5Vp-p) 16-32Ω
Line out – 1.0 Vrms (2.8Vp-p) @ >10kΩ
Line input – 1.0 Vrms (2.8Vp-p) @ 5-15kΩ
Mic input – adjustable bias and gain 2.6Vdc 5-15 kΩ
Module low-power class-D powered speaker out 1W (max)
External host board (12VDC input) class-D speaker out – Mono, 4/8Ω 15W (max)
External host board (PoE input) class-D speaker out – Mono, 4/8Ω 4.7W (max)

Physical and Ratings

+3.3VDC +/- 5% 1.2W (class-D disabled)
12VDC or 802.3af PoE host board power input
-40°C to +85°C parts rating
2x 60-pin module header connector
60 x 60mm physical size

Software

System Software

RTOS with network stack including DHCP, DNS, NTP
Preinstalled SIPxtream and Mbarx Firmware
Discrete firmware loads for each service type (e.g. VoIP/Intercom, Multicast PA etc)
Downloadable value add software

SIPxtream VoIP and Intercom Firmware

1x VoIP line with analog audio
SIP/RTP with full-duplex voice communication
SIP infrastructure (PBX) and P2P (standalone) compatibility
Call originate/receive, called-ID, hold/retrieve, transfer, auto-answer/hang-up, info messaging
SIP Fields (User, AuthID, CID, proxy, server), outbound proxy (optional)
SIP, SDP, RTP, RTCP (UDP)
UAC/UAS stacks with standard transaction timers
SIP INVITE, ACK, BYE, CANCEL, REGISTER, INFO methods
SIP priority, call type, answer mode extensions (optional)
Text messaging via SIP-INFO
Early media, late media
G.711ulaw, G.711alaw, G.722 (wide band) audio codecs, 20mS ptimes
G.726, iLBC, G.729, DTX audio codecs (optional), 20 or 30mS ptimes
VLAN, ToS / diffserv tagging (optional)
Acoustic Echo Cancellation (AEC), Noise reduction (NR)
Configurable call progress announcements
Fileplay framework (optional)
DTMF (RFC4733) detect with dedicated output for door lock control
DTMF (RFC4733) generate (optional)
Dedicated inputs/outputs for autonomous and push-to-call operation
Mbarx Secure IoT support with host protocol integration

SIPxtream Multicast PA Firmware (with control protocol)

Half-duplex, one-to-many, multicast RTP transmitter or receiver
SIP infrastructure (PBX) or P2P (standalone) compatibility
Up to 100 configurable talk groups/channels
Multicast Paging (MCPG) control protocol with keep-alive messages
Configurable protocol address / port
Unique multicast address per PA group
Protocol extensions (tones, text, security..)
Multiple concurrent transmitter support
Last-in wins arbitration (suitable for PTT/radio applications)
Stuck transmitter protection
Return to idle on loss of service
Recover session on acquisition of service
VoIP call notification during PA session
PA notification during VoIP call
G.711u (8KHz narrow band), G.722 (16KHz wide-band) audio codecs, 20mS ptimes
IGMP support
Dedicated inputs/outputs for control, push-to-call
Fileplay framework (optional)
Mbarx Secure IoT support with host protocol integration

SIPxtream Generic Multicast PA Firmware (no control protocol)

Simplex multicast RTP receiver only
Up to 10 paging groups
Up to 10 priorities
One transmitter source
Unique multicast address per PA group
G.711u (8KHz narrow band) audio codecs, 20mS ptimes
IGMP support
Compatible with common PBX intercom and PA support (e.g. Asterisk^®, Freeswitch^®, Polycom^®)
Compatible with stand alone PA and paging applications (e.g. Bell Commander^®)
Mbarx Secure IoT support with host protocol integration

SIPxtream Multicast Push-To-Talk Firmware (optional)

Half-duplex, one-to-many, multicast RTP transmitter and receiver
Push-to-talk operation
Configurable talk groups/channels
G.711u (8KHz narrow band), G.722 (16KHz wide-band) audio codecs, 20mS ptimes
802.11bgn Wi-Fi support
Dedicated inputs/outputs for control and push-to-call
Mbarx Secure IoT support with host protocol integration

Mbarx Secure IoT Firmware

Device management and configuration
TLS v1.2 encryption, x509 certificate authentication
OTA firmware updates
Auto firmware upgrades
Connection origination service (call home)
Configuration template/file provisioning
System alarms
Remote system logging
Factory reset, reboot
Host protocol for configuration/operation by UART or TCP/IP
UART to TCP/IP data passthrough
Integrated with SIPxtream firmware
Compatible with Mbarx tools and gateways

Block Diagram

How uCMK64-VoIP works?

A quick introduction to the uCMK64-VoIP module built using an NXP K64 Arm Cortex-M4 microcontroller running Mbarx Secure IoT and SIPxtream communications firmware.