TOA IP Audio Interface

1. Safety Precautions

Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation.

Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions regarding safety.

After reading, keep this manual handy for future reference.

WARNING: Indicates a potentially hazardous situation which, if mishandled, could result in death or serious personal injury.

CAUTION: Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage.

When Installing the Unit

• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as doing so may result in fire or electric shock.

When the Unit is in Use

• Should the following irregularity be found during use, immediately cut off the power supply from a PoE+ or PoE switching hub and contact your nearest TOA dealer. Make no further attempt to operate the speaker in this condition as this may cause fire or electric shock:
  • If you detect smoke or a strange smell coming from the unit
  • If water or any metallic object gets into the unit
  • If the unit falls, or the unit case breaks
  • If the LAN cable is damaged (exposure of the core, disconnection, etc.)
  • If the speaker suddenly stops producing sound
• To prevent a fire or electric shock, never open nor remove the unit case as there are high voltage components inside the unit. Refer all servicing to qualified service personnel.
• Do not touch the unit and LAN cable during thunder and lightning, as this may result in electric shock.
• To prevent the electromagnetic wave from badly influencing medical equipment, make sure to switch off the unit's power when placing it in close proximity to the medical equipment.

When Installing the Unit (Caution)

• Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric shock.
• Avoid touching the unit's sharp metal edge to prevent injury.

This equipment is not suitable for use in locations where children may be present.

2. Summary and Features

The IP-A1AF is an IP Audio Interface which decodes IP audio streams into analog signals. It is equipped with a built-in 15 W amplifier to drive Low-impedance speaker(s). Analog audio and control outputs can be connected to an external amplifier for scaling up the system capability.

• Power is supplied by way of PoE+ (IEEE 802.3at) or PoE (IEEE 802.3af) switching hubs.
• The IP audio interface is compatible with the following broadcasting modes:
  • Internal sound source broadcasting mode: Enables broadcast of up to 20 internal sound source files by means of control input or Remote API (HTTP).
  • VMS broadcasting mode: Enables backchannel audio broadcast from the VMS (Video management system) software using the common protocol for IP cameras.
  • SIP broadcasting mode: Enables SIP broadcasts from any voice communications device that utilizes the SIP protocol, such as SIP or IP telephone (IP-PBX) systems.
  • Multicast broadcasting mode: Allows up to 20 multicast ports to be set up, for 20 multicast audio stream paging groups.
  • Local broadcasting mode: Local broadcasting mode enables broadcast locally to the speaker output and the LINE output from the sound source device or microphone connected with LINE/MIC input.
• Orders of priority can be set among the various broadcasting modes, meaning higher priority broadcasts can interrupt and override lower priority broadcasts.
• Since the unit is equipped with individual offset adjustable volumes for each broadcasting modes and patterns (internal sound source), actual broadcasting volume can be normalized or optimized.
• Broadcasts can be controlled using Remote API or control inputs from connected external equipment.
• Connected external equipment can be controlled by control outputs in synchronization with speaker broadcasts.

3. About Security Measures

• Ensure that sufficient security measures are taken on the customer's own responsibility.
• TOA Corporation takes no responsibility for damage or loss caused by security-related problems, such as illegal access.
• To help prevent illegal access to the unit, be sure to change the user ID and password from those used for initial setup. For setting methods and other details, please refer to the separate receiving device setup manual which can be downloaded from the TOA DATA Library (https://www.toa-products.com/international/).
• Take utmost care in the management of the unit's communications password.

4. System Example

4.1. SIP Broadcasting/Two-way Communication

Diagram Description: A system diagram showing a SIP phone or SIP intercom connected via a LAN to the IP-A1AF unit. The IP-A1AF has inputs for a microphone panel and control signals, and outputs for speakers. A SIP server is also shown in the network. The diagram illustrates SIP calls from the microphone.

Tips:

• Set the local broadcasting settings "OFF." If it is "ON," the microphone input voice will be output to the speaker.
• When the voice switch setting is "ON," the call will be half-duplex.

4.2. VMS Broadcasting

Diagram Description: A system diagram illustrating VMS broadcasting. VMS software is connected via a LAN to the IP-A1AF unit. The IP-A1AF has inputs for a microphone for sound collection and control signals, and outputs for speakers. The diagram shows audio monitoring with the VMS system.

Tip: Set the local broadcasting settings "OFF." If it is "ON," the microphone input sound will be output to the speaker.

4.3. Local Broadcasting

Diagram Description: A system diagram for local broadcasting. A paging microphone is connected via the LINE/MIC input to the IP-A1AF unit. The IP-A1AF has control input and speaker output terminals, connecting to a low-impedance speaker. The diagram indicates local broadcasting is active.

Tip: Set the local broadcasting settings "ON."

5. Dimensional Drawings

Diagram Description: The document includes dimensional drawings of the IP-A1AF unit. The "Front" view shows the front panel with labels for LINE/MIC IN, VOLUME SIGNAL, OUTPUT SIGNAL, STATUS, SPEAKER, and the IP AUDIO INTERFACE IP-A1AF model name. It indicates dimensions of 127.4 mm (5.02") and 126 mm (4.96") in length, and 33 mm (1.3") in height. The "Bottom" view shows screw hole positions and dimensions, with a length of 104 mm (4.09") and width of 56 mm (2.2"). The "Side" view details the depth and mounting hole dimensions, with a depth of 80 mm (3.15") and various mounting screw hole specifications (4-M3, depth 6 mm or 0.24"). All dimensions are provided in millimeters (inches).

6. Nomenclature and Functions

The IP-A1AF unit features various controls and indicators on its front, rear, and bottom panels.

Front Panel

Diagram Description: The front panel of the IP-A1AF unit is shown with the following labeled components:

• 1. Status indicator (green, blue, yellow, red): Indicates the unit's operating status.
  • System startup: Flashing green
  • Broadcast standby: Continuously lit green
  • Broadcasting: Continuously lit blue
  • System mute: Flashing red
  • Initialization or firmware updating: Continuously lit yellow
  • *System mute is a state in which this unit is muted by the control from the transmitting device.
• 2. LINE/MIC input volume control: Adjusts the volume level of the LINE/MIC input. Rotate clockwise to increase and counterclockwise to decrease. Set this volume so the LINE/MIC input signal indicator (3) does not light up red.
• 3. LINE/MIC input signal indicator (green, red): Lights green when a signal is input to LINE/MIC input. Lights red when the input signal level is too high.
• 4. Output signal indicator (green): Lights green when a signal is outputting from the speaker or line output.
• 5. Speaker output terminal (8 – 16 Ω): Connects only with low-impedance speakers.
  • Tip: Amplifier rated output is 8 W at PoE powered, 8 Ω, and 15 W at PoE+ powered, 8 Ω.

Rear Panel

Diagram Description: The rear panel of the IP-A1AF unit is shown with the following labeled components:

• 6. Line output terminal: Connects with an external amplifier etc. and outputs the same audio as the speaker output.
• 7. LINE/MIC input terminal: Connects with a microphone or sound source device. Can be used as an analog audio input for local broadcasting, SIP calls, or VMS broadcast monitoring. Adjust with the DIP switch according to the output level of the connected device.
• 8. LAN port: Connect to a PoE+ or PoE switching hub using a LAN cable.
• 9. LINK/ACT indicator (green): Flashes when data is being sent or received over a network.
• 10. Control output terminal: Allows control of external equipment in synchronization with the unit operation.
• 11. Functional ground terminals: Connect to the external equipment's functional ground terminal to minimize noise if excessive noise is produced when the speaker is connected to external equipment. Note: This terminal is not for protective ground.
• 12. Control input terminals: Allows input of control signals from connected external equipment to enable actions set in the Event settings.
• 13. DIP switch:
  • LINE/MIC switch (Switch 1): Set to MIC for microphone, LINE for other sound sources. Default: LINE.
  • PAD switch (Switch 2): Enables or disables the MIC input pad (-20 dB). Default: 0 dB.
  • PHANTOM switch (Switch 3): Supplies 12 V DC phantom power to the MIC IN. Default: OFF.

Bottom Panel

Diagram Description: The bottom panel of the IP-A1AF unit is shown with the following labeled components:

• 14. Reset key: Clicking restarts the unit. Holding until the Status indicator (1) lights yellow initializes the unit's settings.
• 15. Rubber feet attachment position: Indicates where to attach the included rubber feet for desktop placement.

7. Handling Precautions

• Please apply the latest firmware version to this product. The latest version is available at the TOA DATA Library (https://www.toa-products.com/international/).
• As this product is IP-based, a slight time lag between actual and broadcast may happen.
• Broadcast audio may sometimes break up due to packet loss or network failure.
• Periodic inspection and manual rebooting are needed to extend the product life.
• This product may reboot automatically to keep the stable operation.

8. Unit Mounting

It is recommended to install the unit as shown in the examples.

Putting on the desk

Diagram Description: An illustration shows the IP-A1AF unit placed on a desk. It indicates that the unit can be used on a desktop by attaching the accessory rubber feet to the bottom of the unit.

Mounting on the wall

Diagram Description: An illustration shows the IP-A1AF unit mounted on a wall. It suggests preparing a commercially available L-shaped bracket and fixing it with accessory screws using the four screw holes on the unit. The diagram specifies using machine screws M3 x 6 (accessory) and notes that the plate thickness for the bracket should be 1 to 3 mm (0.04" to 0.12"). It also advises using metal fittings of sufficient strength and installing in a place with sufficient strength.

9. Connections

9.1. Network Connection

Connect the IP-A1AF to a PoE+ or PoE switching hub using a LAN cable (straight UTP or STP cable, rated at Category 5e or greater with RJ45 connectors). Power is supplied by the PoE+ or PoE switching hub.

Diagram Description: A diagram shows the IP-A1AF unit with its rear panel connectors. A LAN cable is shown connecting the LAN port to a "From PoE+/PoE switching hub". The diagram also lists compatible switching hubs: those conforming to PoE+ (IEEE802.3at Class 4) or PoE (IEEE802.3af Class 3) specifications.

9.2. Connections to LINE/MIC Input and Line Output Terminals

Use the supplied removable terminal plugs (6 pins) for connection. Use a 2-core shielded cable to connect the audio device. For connection of the removable terminal plugs, refer to "Removable Terminal Plug Connections" on page 12.

Diagram Description: When the connected unit has an unbalanced input, connections are made as follows: A "Connected unit" with HOT (H), Cold (C), and Earth (E) terminals is shown connected via a shield to the IP-A1AF's LINE/MIC input terminal. The IP-A1AF also has a Line output terminal. The diagram shows the LINE/MIC input terminal and the DIP switch settings.

DIP switch settings:

Note: Please change DIP switch settings while the power is off.

LINE/MIC input level adjustment:

Set the volume of connected devices roughly using the DIP switch. Then, use the LINE/MIC input volume control for fine adjustments. Adjust the level so that the LINE/MIC input signal indicator lights green, not red.

Diagram Description: A diagram shows the IP-A1AF unit's front panel with the LINE/MIC input signal indicator and the VOLUME control. Arrows indicate "Decrease VOLUME" and "Increase" for the LINE/MIC input volume control.

Note: Rotate the input volume control screw using an appropriate screwdriver. When rotating, do not press on the screwdriver with too much force, to avoid damage to the adjuster.

9.3. Connections to Control Input and Output Terminals

Use the supplied removable terminal plugs (6 pins) for connection. Connect a control line of 2 channels control input and 1 channel control output from the external control device to the unit's control input or control output terminal. For connection of the removable terminal plugs, see "Removable Terminal Plug Connections" on page 12.

Diagram Description: A diagram shows the IP-A1AF unit's rear panel, highlighting the CTRL OUT (1 channel) and CTRL IN (2 channels) terminals. It indicates that the control output is a removable terminal block (6 pins) with open collector output, 30 V DC withstand voltage, and 150 mA or less allowable current. The control input is also a removable terminal block (6 pins) with no-voltage make contact input, 5 V DC open circuit voltage, and 2 mA or less short-circuit current.

Assignable Functions:

For settings, please refer to the separate receiving device setup manual. The latest version of the setup manual is available on the TOA DATA Library (https://www.toa-products.com/international/).

9.4. Removable Terminal Plug Connections

Please note the following points when making connections to the control input, control output, and speaker output terminals using the supplied removable terminal plugs:

• Do not tin stripped wire ends with solder. Soldered wire ends will be crushed when the terminal plug screws are tightened, leading to higher contact resistance and potentially resulting in an abnormal rise in the temperature of the connected parts.
• Use AWG 24 – 14 wire (ø0.5 – 1.6 mm solid wire or multi-stranded wire with a cross-sectional area of 0.2 – 2.0 mm²).
• Strip the wire end back about 7 mm (0.28").
• When connecting 2 wires or a signal cable to a single terminal, crimp them in an insulated (twin) wire ferrule to prevent their core wires from being separated from one another. Use a ferrule of the dimensions shown in the figure at right.

Diagram Description: A diagram illustrates the correct way to prepare a wire for connection to a terminal. It shows a wire ferrule, contact, and dimensions 'a', 'b', 'l1', and 'l2'. 'b' is specified as 0.8 – 1.1 mm (0.03" – 0.04") and 'l2' as 8 mm (0.31"). A note advises selecting dimensions "a" and "l1" depending on the wires to be used.

Plug Connection Procedure:

1. Remove the plug from the terminal.
2. Loosen the terminal screw and insert a wire.
3. Tighten the screw firmly. Note: Pull on the wire to ensure that it does not come off.
4. Insert the plug into the terminal.

Tip: Recommended slotted screwdriver blade width is about 2.5 mm (0.1").

Diagram Description: A step-by-step illustration shows the plug connection procedure: loosening a terminal screw, inserting a wire, tightening the screw, and inserting the plug back into the terminal. It also shows a recommended slotted screwdriver.

10. Settings

10.1. System Settings Summary

The following settings can be performed using a PC browser connected to the same network as the IP audio interface.

For more information, please refer to the separate receiving device setup manual. The latest version of the setup manual is available on the TOA DATA Library (https://www.toa-products.com/international/).

10.2. System Requirements

Connectable system requirements are as follows:

Notes:

• Windows and Microsoft Edge are registered trademarks of Microsoft Corporation of the United States in the United States and other countries.
• Google Chrome is a trademark of Google LLC of the United States in the United States and other countries.

10.3. Connection with Browser

10.3.1. Connection presets

The IP audio interface is factory-preset as follows:

• Username: admin
• Password: guest
• IP address: 192.168.14.1
• Subnet mask: 255.255.255.0
• Default gateway: 0.0.0.0

Before connecting a PC to the IP audio interface and changing its setting, it will be necessary to set the PC's network settings so that it can operate on the same network as the IP audio interface. Take care that no IP addresses are duplicated in the same network. For example, if the IP audio interface's IP address is 192.168.14.1, set the PC's IP address to 192.168.14.10.

10.3.2. Making connection

Notes:

• Avoid simultaneously connecting to the IP audio interface from multiple PCs.
• Avoid simultaneously connecting to the IP audio interface from a single PC using multiple browsers.

Step 1. Start the browser and enter the speaker's IP address in the address field. The Login screen is displayed.

Step 2. Enter the username and password, and click the LOGIN button. The Status screen is displayed, enabling a range of settings.

Note: For details regarding the setting method, please refer to the separate receiving device setup manual. The latest version of the setup manual is available on the TOA DATA Library (https://www.toa-products.com/international/).

Diagram Description: A screenshot shows the login screen for the IP-A1AF interface, with fields for Username, Password, and a LOGIN button.

11. Initialization of Settings

Follow the procedure below to return all unit settings to their default:

Tip: When initialized with the reset key, the unit's sound source files are left in "Media," not deleted. Initialization to factory defaults, including deletion of sound source files, should be performed using the browser settings menu.

Diagram Description: Diagrams illustrate the location of the reset key. The front view shows the Status indicator (labeled '1'). The bottom view shows the Reset key (labeled '2'). A LAN cable connection to a PoE+/PoE switching hub is also indicated.

Step 1. Connect the speaker to the PoE+ or PoE switching hub using a LAN cable. The speaker will be started.

Step 2. Hold down the reset key located on the bottom panel using a pointed tool. The speaker automatically restarts and settings initialization begins.

Tip: Clicking on the reset key causes the unit to be restarted. If pressure on the reset key is released part way through the initialization process, only unit restart will be performed, and the settings will not be initialized. To click on the reset key, use a tool that is thinner than ø1.5 mm (0.06") and longer than 5 mm (0.2").

Step 3. When the status indicator lights yellow, release the reset key. When initialization is complete, the status indicator lights green and all settings will be initialized to their default settings.

Default Settings:

• Username: admin
• Password: guest
• IP address: 192.168.14.1
• Subnet mask: 255.255.255.0
• Default gateway: 0.0.0.0

12. Cautions Regarding the AVC/H.264 Patent License

TOA's IP-A1AF IP audio interface employs MPEG technology (AVC/H.264 Standard) regarding the handling of image information. TOA Corporation has received approval to use this technology from MPEG LA, LLC, the patent management group. Please note that the use of this product is prohibited except in the following cases:

• The use of the product is intended for personal use of a user of the MPEG technology and also for non-profit use, which includes (i) video encoding conforming to the AVC/H.264 Standard (hereinafter referred to as "AVC/H.264") and/or (ii) personal use and decoding of AVC/H.264 encoded by an MPEG technology user engaged in non-profit activities and/or AVC/H.264 furnished by a video provider who is granted a license by MPEG LA, LLC.

Regarding use for sales promotion or commercial purposes, or additional licensing information, please contact MPEG LA, LLC (https://www.mpegla.com).

13. Open Source Software

This product uses software based on open source software license(s). If you need further information about the original open source software including source code, please download it from the TOA DATA Library (https://www.toa-products.com/international/). Please note that we cannot answer any questions about the contents of the original source code.

This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit (http://www.openssl.org/).

This product includes cryptographic software written by Eric Young (eay@cryptsoft.com).

14. Accessories

• Removable terminal plug (6 pins, preinstalled on the unit) x 2
• Removable terminal plug (2 pins, preinstalled on the unit) x 1
• Rubber foot x 4
• Machine screw M3 x 6 x 4

Tip: The specifications of this product are available in TOA DATA Library (https://www.toa-products.com/international/). Scan the QR Code at right with your mobile phone camera to access the WEB site and search for this product number (IP-A1AF).

Diagram Description: A QR code is shown, which links to the TOA website for product specifications.

Traceability Information for USA:

TOA Electronics, Inc.
1 Harmon Plaza, Suite 700 Secaucus, New Jersey 07094, USA
https://www.toaelectronics.com/
https://www.toa-global.com/en