Shure P300 | IntelliMix Processor | Version 1.0

Introduction & Manufacturer Profile

Shure is a manufacturer of professional audio equipment for conferencing, live sound, and broadcast applications. The P300 IntelliMix Audio Processor is a Dante-networked automixer and DSP unit designed for conference room and huddle space installations, providing acoustic echo cancellation (AEC), automatic gain control (AGC), noise reduction, and automixing for up to 8 Dante microphone inputs.

This driver provides IP control of the Shure P300 over its TCP/IP control protocol. It supports channel mute/gain, automixer control, AEC/AGC/noise reduction per channel, preset recall, analog I/O configuration, and real-time metering.

---

Version History

• v1.0 - Initial Release

---

Driver Features

• Automixer Control - Mute, mode (Manual / Gain Share / Gating), max NOM, hold time, gate sensitivity, and last-mic lock-on for the automixer output (Ch 21)
• Channel Control - Mute and gain (0.1 dB steps) for all Dante, analog, USB, and Mobile channels
• Audio Processing - Per-channel AEC (with NLP level), AGC, and noise reduction (with level) for Dante mic inputs 1-8
• Preset Recall - Recall any of 10 device presets, with preset name feedback (all 10 names plus the current preset's name)
• Channel Names - Channel names for all 20 inputs/outputs, pulled from the P300
• Volume Scaling - Volume (0-100) sliders and variables span a configurable dB floor/ceiling (separately for inputs and outputs)
• Analog I/O Configuration - Input/output level switching (Line / Aux / Mic) and output delay
• Metering - Real-time input/output level feedback (-60 to 0 dBFS)
• Call Status - On-hook/off-hook state and control
• Auto Reconnect - Automatic reconnection on connection loss
• Background Refresh - Periodic polling to keep gate/mute state current

---

System Requirements & Prerequisites

Device Requirements

• Shure P300 - Firmware 4.1.x or newer
• Network - P300 control network (not the Dante audio network) reachable from the RTI processor
• IP Access - Static IP or DHCP reservation recommended on the control network interface

RTI System Requirements

• Integration Designer - 11.5 or above
• XP Processor - XP-8
• XP Firmware - 24.x or above

---

Driver Configuration

1. In Integration Designer, add the Shure P300 driver to your project
2. Enter the IP Address of the P300's control network interface (default: 192.168.1.100)
3. Set the IP Port (default: 2202)
4. Optionally, set Volume Scaling (see below)
5. The driver connects automatically and begins its initialization sequence on program load

Volume Scaling

These settings control what 0% and 100% mean for every Volume (0-100) function and variable, plus how far Volume Up/Down can move. The defaults cover the full device range (-110 to +30 dB), so if you leave them alone nothing changes.

• Input Volume Floor / Ceiling (dB) - Range for inputs (Dante Mic 1-8, Dante 9-10, Analog, USB, Mobile)
• Output Volume Floor / Ceiling (dB) - Range for outputs (Dante, Analog, USB, Mobile outputs)
• Volume Up/Down Step (0.1 dB units) - Size of each Up/Down step (default 10 = 1 dB)

Example: with Input Floor -60 and Input Ceiling 0, a mic's Volume (0-100) of 0% sends raw 500, 50% sends raw 800, and 100% sends raw 1100. Up/Down stops at those limits too. Volume (Native) still accepts the full 0-1400 range. If a channel is set outside the window some other way, its Volume (0-100) shows 0 or 100.

Device dB to raw: raw = (dB + 110) x 10. If you enter a floor that is not below the ceiling, the driver falls back to the full range.

Note: Use the P300's control network address, not its Dante (audio) network address. These are separate interfaces on the device.

---

Functions

Preset Control

• Recall Preset - Recall preset 1-10

Automixer Mute - System Mute

• Automixer Mute - Mute/unmute the automixer output (recommended method for system muting)
• System Mute - Alias for Automixer Mute (identical effect, provided as an alternate name for panel/macro convenience)

Device Audio Mute

• Device Audio Mute - Mute/unmute the entire device

Per-Channel Mute / Gain

Every controllable channel (01-08, 09-10, 11-12, 13, 14, 15-16, 17-18, 19, 20) has its own dedicated category with:

• [Channel] Mute - On/Off/Toggle, e.g. Dante Mic Input 1 Mute, Analog Output 1 Mute, USB Input Mute
• [Channel] Volume (Native) - Set gain directly, range 0-1400
• [Channel] Volume (0-100) - Set gain as a 0-100 scale across the configured Volume Scaling floor/ceiling (full 0-1400 by default). Slider-capable
• [Channel] Volume Up/Down - Step gain up/down by the configured Volume Up/Down Step (default 1 dB), limited to the Volume Scaling floor/ceiling (repeatable) - available on all 20 channels

Note: There's no generic "pick a channel from a dropdown" mute/gain function - each channel is a dedicated single-purpose function. This is deliberate: a function with a channel-picker parameter in front of Gain can't render as a slider in Integration Designer, and per-channel functions are required for autoprogram/manual button linking anyway (we can't disambiguate 20 channels through one shared function).

Audio Processing (AEC / AGC / Noise Reduction, Dante mic inputs 1-8)

• Set AEC - On/Off/Toggle
• Set AEC NLP Level - Low / Medium / High
• Set AEC Reference - Assign the AEC reference source (Ch 22)
• Set AGC - On/Off/Toggle
• Set Noise Reduction - On/Off
• Set Noise Reduction Level - Low / Medium / High

Automixer Settings (Ch 21)

• Set Automixer Mode - Manual / Gain Share / Gating
• Set Automixer Max NOM - 1-8
• Set Automixer Last Mic Lock On - On/Off/Toggle
• Set Automixer Hold Time - 100-1500 ms
• Set Automixer Gate Sensitivity - 1-9
• Set Automixer Channel Always On / Set Automixer Channel Priority - Per-channel automixer flags
• Set Compressor - On/Off/Toggle (Ch 00 or 21)

Analog I/O Level

• Set Analog Input Level - Line / Aux
• Set Analog Output Level - Line / Aux / Mic

Output Delay

• Set Delay - 0-1000 ms

LED and Flash

• Set LED Brightness - Disabled / Dim / Default
• Flash P300 - Flash LEDs for identification (auto-off after 30 sec)

Metering

• Metering is off by default - the device reports null for all five meter types until you explicitly enable it. Call the matching Set Meter Rate function below with a non-zero value (e.g. 1000 ms) to start receiving live level updates for that meter type; without doing so, the Meter - [Channel] variables stay null indefinitely.
• Set Input/Output/Processing/ERLE/AGC Meter Rate - 0 (off) or 100-99999 ms. There is no valid value between 1-99 (that range doesn't exist on the device) - submitting one is treated as "on" and snapped up to 100 (the fastest valid rate), not silently turned off. Submit exactly 0 to disable periodic meter reporting for that meter type.
• Set Input/Output Meter Mode - Pre-Fader / Post-Fader

Call Status

• Set Onhook Enable - Enable/Disable

Direct Output

• Set Direct Out Tap Point - Pre-Gate/Pre-Processing, Pre-Gate/Post-Processing, Post-Gate/Pre-Processing, Post-Gate/Post-Processing

Device Management

• Reboot P300
• Restore Default Settings
• Send Raw Command - Send any ASCII command for anything not exposed above, including commands added in newer firmware. The < > brackets are optional: GET 21 AUTOMXR_MUTE and < GET 21 AUTOMXR_MUTE > both work. The reply shows in the Last Response variable

---

Channel Map

• 00 - All Channels (where supported)
• 01-08 - Dante Mic Inputs 1-8
• 09-10 - Dante Inputs 9-10
• 11-12 - Analog Inputs 1-2
• 13 - USB Input
• 14 - Mobile Input
• 15-16 - Dante Outputs 1-2
• 17-18 - Analog Outputs 1-2
• 19 - USB Output
• 20 - Mobile Output
• 21 - Automixer Output (primary system mute/mode/gate; no gain parameter)
• 22 - AEC Reference

---

Function to Variable Quick Reference

Function and variable names match 1:1 throughout this driver (e.g. the function Dante Mic Input 1 Volume (Native) feeds the variable of the same name) - see the Functions and Variables sections above for the full per-category breakdown. This section only calls out the pairings that aren't obvious from the name alone:

• Mute functions also produce Muted and Unmuted boolean twins (not just the plain 0/1 variable) - bind button highlighting to those, not the integer.
• Bind sliders to Volume (0-100), not Volume (Native) - see the note under Per-Channel State below for why.
• Volume Up/Down has no variables of its own - it just nudges the same Volume (Native)/Volume (0-100) feedback.
• Recall Preset feeds three variables per slot, not one: Current Preset, Preset N Name, and Preset N Active.
• Meter Rate and Direct Out Tap Point functions do have device readback (confirmed via live traffic) - this was wrongly assumed to be action-only in an earlier pass, corrected here.
• Reboot and Restore Default Settings are genuinely action-only - no variables at all.
• Send Raw Command has no dedicated feedback, but its reply (like every other non-meter device message) lands in Last Response under Device Management.
• System Mute has no dedicated variable of its own - it's a plain alias for Automixer Mute, so read Automixer Mute/Automixer Muted/Automixer Unmuted instead.

---

Variables

Variable categories mirror the function categories above 1:1 by name, so a category found in the function tree has a same-named counterpart in the variable tree (and vice versa, for anything with feedback). The two extra categories below (Connection Status, Device Info) have no function equivalent - they're pure device/driver state.

Connection Status

• Connection State (Integer) - 0 = Disconnected, 1 = Connected
• Initialization State (Integer) - 0 = Ready, 1 = Initializing

Device Info

• Model, Serial Number, Firmware Version, MAC Address, Encryption
• USB Connected / USB Connect State

Preset Control

• Current Preset (1-10), Current Preset Name, Preset N Name (N = 1-10), Preset N Active (N = 1-10)
• Names are read from the P300 on connect and update when a preset is renamed

Device Settings

• Device Audio Mute / Muted / Unmuted, LED Brightness, Flash

Device Management

• Last Response (string) - The most recent message from the device (meter samples excluded), e.g. < REP 01 CHAN_NAME {Podium Mic} >. Use it to see replies to Send Raw Command

Call Status

• Call Status Enabled, Call State (On Hook / Off Hook)

Automixer Settings (Ch 21)

• Automixer Mute / Muted / Unmuted, Automixer Mode, Automixer Max NOM, Automixer Hold Time, Automixer Gate Sensitivity, Automixer Off Attenuation, Automixer Last Mic Lock On, Compressor (Ch 21 has no gain parameter)

Audio Processing

• [Dante Mic Input N] AEC / AEC On / AEC NLP Level - N = 1-8
• [Dante Mic Input N] AGC / AGC On - N = 1-8
• [Dante Mic Input N] Noise Reduction / Noise Reduction On / Noise Reduction Level - N = 1-8
• AEC Reference (Ch 22)

Analog I/O Level

• Analog Input 1/2 Level Switch, Analog Output 1/2 Level Switch

Output Delay

• Analog Output 1/2 Delay, USB Output Delay

Metering

• Input/Output Meter Mode
• Meter - [Channel] - one per channel, all 20 channels (0-60, mapped to -60 to 0 dBFS)

Per-Channel State

Every controllable channel has its own dedicated variable category (matching its function category name) with:

• [Channel] Name (string) - The channel name set on the P300 (e.g. "Podium Mic"), read on connect
• [Channel] Mute (integer) / [Channel] Muted / [Channel] Unmuted (booleans)
• [Channel] Volume (Native) (integer, 0-1400) - precision reference/numeric-entry only - do not bind a slider to this, see note below
• [Channel] Volume (0-100) (integer, 0-100) - percentage of the configured Volume Scaling range, kept in sync automatically - bind sliders and % text to this one
• [Channel] Gate Status (integer) / Gate Open / Gate Closed (booleans) - Dante Mic Input 1-8 only

Categories: Dante Mic Input 1-8, Dante Input 9/10, Analog Input 1/2, USB Input, Mobile Input, Dante Output 1/2, Analog Output 1/2, USB Output, Mobile Output.

• Mute-style (2-state): Mute/Muted/Unmuted (all 21 channels incl. Ch21 raw), Encryption, Flash, Call Status Enabled, Automixer Last Mic Lock On, Compressor, AEC/AGC/Noise Reduction On/Off (per Dante mic input), Automixer Gate Open/Closed (per Dante mic input)

---

Events

Connection

• CONNECTIONSTATE, CONNECTIONSTATE00 (Disconnected), CONNECTIONSTATE01 (Connected), INITIALIZATIONSTATE

Automixer

• AUTOMXRMUTE, AUTOMXRMUTE_21, AUTOMXRGATE

Channel Mute

• AUDIOMUTE_NN - fired per channel on mute state change (NN = 01-21)

Device / Call

• DEVICEAUDIOMUTE, ONHOOKSTATE, PRESET

Metering

• METERIN, METEROUT, METERPROC, METERERLE, METERAGC

---

Autoprogramming Support

What's tagged (and why these two specifically)

• Automixer Mute (Ch 21) - the one genuinely single, non-repeated mute control in the driver, used exactly once, not spread across channels.
• Recall Preset (1-10) - the Master Tag List has numbered variants (Preset 1 through at least Preset 56) specifically for this - the only place in the vocabulary that supports per-instance numbering.

Exact tag assignments:

• Mute / Mute On / Mute Off - Automixer Mute's Toggle/On/Off choices
• Mute, Mute On / Mute Off - Automixer Muted / Automixer Unmuted variables (LED feedback)
• Preset - Current Preset variable
• Preset 1-Preset 10 - Recall Preset's 10 choices, and the matching Preset N Active variables (LED feedback for whichever preset is currently active)

---

Limitations

• The driver connects to the P300's control network interface, not the Dante audio network - use the control IP address in configuration
• AEC, AGC, and noise reduction control are only exposed for Dante mic inputs 1-8, matching the P300's automixer channel layout
• Initialization is staged (one group of GET queries every 500 ms) to avoid flooding the device on connect; full state feedback may take several seconds after connection
• Metering is off by default and must be explicitly enabled via Set Meter Rate (see Functions > Metering) - once enabled, it runs continuously at whatever rate was set for the life of the connection, which is ongoing background network traffic, not a one-time query

---

Support Contact

AVPro Global - Remote Technologies Inc.

Phone: +1 952-253-3100

Email: support@avproglobal.com

Copyright 2026 AVProGlobal - Remote Technologies