AXIS C8033 Network Audio Bridge

Solution overview

This manual describes how you make the device accessible to your audio system, and how to configure the device directly from its interface.

If you are using an audio or video management software, you can use that software for configuring the device. The following management software are available for controlling your audio system:

An overview of how network audio works.

Installation

Installation video for the product.

Get started

Find the device on the network

To find Axis devices on the network and assign them IP addresses in Windows®, use AXIS IP Utility or AXIS Device Manager. Both applications are free and can be downloaded from axis.com/support.

For more information about how to find and assign IP addresses, go to How to assign an IP address and access your device.

Browser support

You can use the device with the following browsers:

ChromeTM

EdgeTM

Firefox®

Safari®

Windows®

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macOS®

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Linux®

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Other operating systems

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✓: Recommended
*: Supported with limitations

Access the device

  1. Open a browser and enter the IP address or host name of the Axis device.

  2. Enter the username and password. If you access the device for the first time, you must set the root password. See Set a new password for the root account.

Set a new password for the root account

Important

The default administrator username is root. If the password for root is lost, reset the device to factory default settings. See Reset to factory default settings

Support tip: Password security confirmation check
  1. Type a password. Follow the instructions about secure passwords. See Secure passwords.

  2. Retype the password to confirm the spelling.

  3. Click Save. The password has now been configured.

Secure passwords

Important

Use HTTPS (which is enabled by default) to set your password or other sensitive configurations over the network. HTTPS enables secure and encrypted network connections, thereby protecting sensitive data, such as passwords.

The device password is the primary protection for your data and services. Axis devices do not impose a password policy as they may be used in various types of installations.

To protect your data we strongly recommend that you:

  • Use a password with at least 8 characters, preferably created by a password generator.

  • Don’t expose the password.

  • Change the password at a recurring interval, at least once a year.

Additional settings

Set up direct SIP (P2P)

Use peer-to-peer when the communication is between a few user agents within the same IP network and there is no need for extra features that a PBX-server could provide. To better understand how P2P works, see Peer-to-peer SIP (P2PSIP).

For more information about setting options, see .

  1. Go to System > SIP > SIP settings and select Enable SIP.

  2. To allow the device to receive incoming calls, select Allow incoming calls.

  3. Under Call handling, set the timeout and duration for the call.

  4. Under Ports, enter the port numbers.

    • SIP port – The network port used for SIP communication. The signaling traffic through this port is non-encrypted. The default port number is 5060. Enter a different port number if required.

    • TLS port – The network port used for encrypted SIP communication. The signaling traffic through this port is encrypted with Transport Layer Security (TLS). The default port number is 5061. Enter a different port number if required.

    • RTP start port – Enter the port used for the first RTP media stream in a SIP call. The default start port for media transport is 4000. Some firewalls might block RTP traffic on certain port numbers. A port number must be between 1024 and 65535.

  5. Under NAT traversal, select the protocols you want to enable for NAT traversal.

  6. Note

    Use NAT traversal when the device is connected to the network from behind a NAT router or a firewall. For more information see NAT traversal.

  7. Under Audio, select at least one audio codec with the desired audio quality for SIP calls. Drag-and-drop to change the priority.

  8. Under Additional, select additional options.

    • UDP-to-TCP switching –  Select to allow calls to switch transport protocols from UDP (User Datagram Protocol) to TCP (Transmission Control Protocol) temporarily. The reason for switching is to avoid fragmentation, and the switch can take place if a request is within 200 bytes of the maximum transmission unit (MTU) or larger than 1300 bytes.

    • Allow via rewrite – Select to send the local IP address instead of the router's public IP address.

    • Allow contact rewrite – Select to send the local IP address instead of the router's public IP address.

    • Register with server every – Set how often you want the device to register with the SIP server for the existing SIP accounts.

    • DTMF payload type – Changes the default payload type for DTMF.

  9. Click Save.

Set up SIP through a server (PBX)

Use a PBX-server when user agents will communicate within and outside the IP network. Additional features could be added to the setup depending on the PBX-provider. To better understand how P2P works, see Private Branch Exchange (PBX).

For more information about setting options, see .

  1. Request the following information from your PBX provider:

    • User ID

    • Domain

    • Password

    • Authentication ID

    • Caller ID

    • Registrar

    • RTP start port

  2. To add a new account, go to System > SIP > SIP accounts and click + Account.

  3. Enter the details you received from your PBX provider.

  4. Select Registered.

  5. Select a transport mode.

  6. Click Save.

  7. Set up the SIP settings the same way as for peer-to-peer. See Set up direct SIP (P2P) for more information.

Set up rules for events

You can create rules to make your device perform actions when certain events occur. A rule consists of conditions and actions. The conditions can be used to trigger the actions. For example, the device can play an audio clip according to a schedule or when it receives a call, or send an email if the device changes IP address.

To learn more, see Get started with rules for events.

Play audio when a camera detects motion

This example explains how to set up the audio device to play an audio clip when an Axis network camera detects motion.

  • Prerequisites
  • The Axis audio device and Axis network camera are located on the same network.

  • The motion detection application is configured and running in the camera.

  1. Prepare an audio clip link:

    1. Go to Audio > Audio clips.

    2. Click > Create link for an audio clip.

    3. Set the volume and number of times to repeat the clip.

    4. Click the copy icon to copy the link.

  2. Create an action rule:

    1. Go to System > Events > Recipients.

    2. Click + Add recipient.

    3. Type a name for the recipient, for example “Speaker”.

    4. Select HTTP from the Type drop-down list.

    5. Paste the configured link from the audio device in the URL field.

    6. Enter the user name and password of the audio device.

    7. Click Save.

    8. Go to Rules and click + Add a rule.

    9. Type a name for the action rule, for example "Play clip".

    10. From the Condition list, select a video motion detection alternative under Applications.

    11. Note

      If there are no options for video motion detection, then go to Apps, click AXIS Video Motion Detection and turn on motion detection.

    12. From the Action list, select Send notification through HTTP.

    13. Under Recipient, select your recipient.

    14. Click Save.

Stop audio with DTMF

  • This example explains how to:
  • Configure DTMF on a device.

  • Set up an event to stop the audio when a DTMF command is sent to the device.

  1. Go to System > SIP > SIP settings.

  2. Make sure Enable SIP is turned on.

    If you need to turn it on, remember to click Save afterwards.

  3. Go to SIP accounts.

  4. Next to the SIP account, click > Edit.

  5. Under DTMF, click + DTMF sequence.

  6. Under Sequence, enter "1".

  7. Under Description, enter "stop audio".

  8. Click Save.

  9. Go to System > Events > Rules and click + Add a rule.

  10. Under Name, enter "DTMF stop audio".

  11. Under Condition, select DTMF.

  12. Under DTMF Event ID, select stop audio.

  13. Under Action, select Stop playing audio clip.

  14. Click Save.

Set up audio for incoming SIP calls

You can set up a rule that plays an audio clip when you receive a SIP call.

You can also set up an additional rule that answers the SIP call automatically after the audio clip has ended. This can be useful in cases where an alarm operator wants to call the attention of someone near an audio device and establish a line of communication. This is done by making a SIP call to the audio device, which will play an audio clip to alert the persons near the audio device. When the audio clip has stopped playing, the SIP call is automatically answered by the audio device and communication between the alarm operator and the persons near the audio device can take place.

  1. Enable SIP settings:
  2. Go to the device interface of the speaker, by entering its IP address in a web browser.

  3. Go to System SIP > SIP settings and select Enable SIP.

  4. To allow the device to receive incoming calls, select Allow incoming calls.

  5. Click Save.

  6. Go to SIP accounts.

  7. Next to the SIP account, click > Edit.

  8. Uncheck Answer automatically.

  1. Play audio when a SIP call is received:
  2. Go to Settings > System > Events > Rules and add a rule.

  3. Type a name for the rule.

  4. In the list of conditions, select State.

  5. In the list of states, select Ringing.

  6. In the list of actions, select Play audio clip.

  7. In the list of clips, select the audio clip you want to play.

  8. Select how many times to repeat the audio clip. 0 means “play once”.

  9. Click Save.

  1. Answer the SIP call automatically after the audio clip has ended:
  2. Go to Settings > System > Events > Rules and add a rule.

  3. Type a name for the rule.

  4. In the list of conditions, select Audio clip playing.

  5. Check Use this condition as a trigger.

  6. Check Invert this condition.

  7. Click + Add a condition to add a second condition to the event.

  8. In the list of conditions, select State.

  9. In the list of states, select Ringing.

  10. In the list of actions, select Answer call.

  11. Click Save.

Learn more

Session Initiation Protocol (SIP)

The Session Initiation Protocol (SIP) is used to set up, maintain and terminate VoIP calls. You can make calls between two or more parties, called SIP user agents. To make a SIP call you can use, for example, SIP phones, softphones or SIP-enabled Axis devices.

The actual audio or video is exchanged between the SIP user agents with a transport protocol, for example RTP (Real-Time Transport Protocol).

You can make calls on local networks using a peer-to-peer setup, or across networks using a PBX.

Peer-to-peer SIP (P2PSIP)

The most basic type of SIP communication takes place directly between two or more SIP user agents. This is called peer-to-peer SIP (P2PSIP). If it takes place on a local network, all that’s needed are the SIP addresses of the user agents. A typical SIP address in this case would be sip:<local-ip>.

Example

You can set up a SIP-enabled phone to call an audio device on the same network using a peer-to-peer SIP setup.

Private Branch Exchange (PBX)

When you make SIP calls outside your local IP network, a Private Branch Exchange (PBX) can act as a central hub. The main component of a PBX is a SIP server, which is also referred to as a SIP proxy or a registrar. A PBX works like a traditional switchboard, showing the client's current status and allowing for example call transfers, voicemail, and redirections.

The PBX SIP server can be set up as a local entity or offsite. It can be hosted on an intranet or by a third party provider. When you make SIP calls between networks, calls are routed through a set of PBXs, that query the location of the SIP address to be reached.

Each SIP user agent registers with the PBX, and can then reach the others by dialing the correct extension. A typical SIP address in this case would be sip:<user>@<domain> or sip:<user>@<registrar-ip>. The SIP address is independent of its IP address and the PBX makes the device accessible as long as it is registered to the PBX.

Example

NAT traversal

Use NAT (Network Address Translation) traversal when the Axis device is located on an private network (LAN) and you want to access it from outside of that network.

Note

The router must support NAT traversal and UPnP®.

Each NAT traversal protocol can be used separately or in different combinations depending on the network environment.

  • ICE The ICE Interactive Connectivity Establishment) protocol increases the chances of finding the most efficient path to successful communication between peer devices. If you also enable STUN and TURN, you improve the ICE protocol’s chances.

  • STUN - STUN (Session Traversal Utilities for NAT) is a client-server network protocol that lets the Axis device determine if it is located behind a NAT or firewall, and if so obtain the mapped public IP address and port number allocated for connections to remote hosts. Enter the STUN server address, for example, an IP address.

  • TURN - TURN (Traversal Using Relays around NAT) is a protocol that lets a device behind a NAT router or firewall receive incoming data from other hosts over TCP or UDP. Enter TURN server address and the login information.

Analytics and apps

With analytics and apps you can get more out of your Axis device. AXIS Camera Application Platform (ACAP) is an open platform that makes it possible for third parties to develop analytics and other apps for Axis devices. Apps can be preinstalled on the device, available for download for free, or for a license fee.

To find the user manuals for Axis analytics and apps, go to help.axis.com.

The web interface

To read about all the features and settings available in the web interface of devices with AXIS OS, go to AXIS OS web interface help.

Troubleshooting

Reset to factory default settings

Important

Reset to factory default should be used with caution. A reset to factory default resets all settings, including the IP address, to the factory default values.

To reset the product to the factory default settings:

  1. Disconnect power from the product.

  2. Press and hold the control button while reconnecting power. See Product overview.

  3. Keep the control button pressed for 10 seconds until the status LED indicator turns amber for the second time.

  4. Release the control button. The process is complete when the status LED indicator turns green. If no DHCP server is available on the network, the device IP address will default to one of the following:

    • Devices with AXIS OS 12.0 and later: Obtained from the link-local address subnet (169.254.0.0/16)

    • Devices with AXIS OS 11.11 and earlier: 192.168.0.90/24

  5. Use the installation and management software tools, assign an IP address, set the password, and access the product.

You can also reset parameters to factory default through the device’s web interface. Go to Maintenance > Factory default and click Default.

Check the current AXIS OS version

AXIS OS determines the functionality of our devices. When you troubleshoot a problem, we recommend that you to start by checking the current AXIS OS version. The latest version might contain a correction that fixes your particular problem.

To check the current AXIS OS version:

  1. Go to the device’s web interface > Status.

  2. Under Device info, see the AXIS OS version.

Upgrade AXIS OS

Important
  • When you upgrade the device software, your preconfigured and customized settings are saved. Axis Communications AB can't guarantee that the settings are saved, even if the features are available in the new AXIS OS version.
  • Starting from AXIS OS 12.6, you must install every LTS version between your device’s current version and the target version. For example, if the currently installed device software version is AXIS OS 11.2, you have to install the LTS version AXIS OS 11.11 before you can upgrade the device to AXIS OS 12.6. For more information, see AXIS OS Portal: Upgrade path.
  • Make sure the device remains connected to the power source throughout the upgrade process.
Note
  • When you upgrade the device with the latest AXIS OS version in the active track, the product receives the latest functionality available. Always read the upgrade instructions and release notes available with each new release before you upgrade. To find the latest AXIS OS version and the release notes, go to axis.com/support/device-software.
  1. Download the AXIS OS file to your computer, available free of charge at axis.com/support/device-software.

  2. Log in to the device as an administrator.

  3. Go to Maintenance > AXIS OS upgrade and click Upgrade.

  4. When the upgrade has finished, the product restarts automatically.

Technical issues, clues and solutions

If you can’t find what you’re looking for here, try the troubleshooting section at axis.com/support.

Problems upgrading the firmware

Firmware upgrade failure

If the firmware upgrade fails, the device reloads the previous firmware. The most common reason is that the wrong firmware file has been uploaded. Check that the name of the firmware file corresponds to your device and try again.

Problems setting the IP address

The device is located on a different subnet

If the IP address intended for the device and the IP address of the computer used to access the device are located on different subnets, you cannot set the IP address. Contact your network administrator to obtain an IP address.

The IP address is being used by another device

Disconnect the Axis device from the network. Run the ping command (in a Command/DOS window, type ping and the IP address of the device):

  • If you receive: Reply from <IP address>: bytes=32; time=10... this means that the IP address may already be in use by another device on the network. Obtain a new IP address from the network administrator and reinstall the device.

  • If you receive: Request timed out, this means that the IP address is available for use with the Axis device. Check all cabling and reinstall the device.

Possible IP address conflict with another device on the same subnet

The static IP address in the Axis device is used before the DHCP server sets a dynamic address. This means that if the same default static IP address is also used by another device, there may be problems accessing the device.

The device cannot be accessed from a browser

Cannot log in

When HTTPS is enabled, ensure that the correct protocol (HTTP or HTTPS) is used when attempting to log in. You may need to manually type http or https in the browser’s address field.

If the password for the user root is lost, the device must be reset to the factory default settings. See Reset to factory default settings.

The IP address has been changed by DHCP

IP addresses obtained from a DHCP server are dynamic and may change. If the IP address has been changed, use AXIS IP Utility or AXIS Device Manager to locate the device on the network. Identify the device using its model or serial number, or by the DNS name (if the name has been configured).

The device is accessible locally but not externally

To access the device externally, we recommend using one of the following applications for Windows®:

  • AXIS Camera Station: 30-day trial version free of charge, ideal for small to mid-size systems.

For instructions and download, go to axis.com/vms.

Problems with sound files

Can’t upload media clip

  • The following audio clip formats are supported:
  • au file format, encoded in µ-law and sampled with 8 or 16 kHz.

  • wav file format, encoded in PCM audio. It supports encoding as 8 or 16-bit mono or stereo and sample rate of 8 to 48 kHz.

  • mp3 file format, in mono or stereo with bitrate of 64 kbps to 320 kbps and sample rate of 8 to 48 kHz.

Media clips are played with different volumes

A sound file is recorded with a certain gain. If your audio clips have been created with different gains, they will be played with a different loudness. Make sure that you use clips that have the same gain.

Performance considerations

When you set up your system, it’s important to consider how different settings and situations affect the required bandwidth (bitrate).

The most important factors to consider:

  • Heavy network utilization due to poor infrastructure affects the bandwidth.

  • Running multiple AXIS Camera Application Platform (ACAP) applications simultaneously may affect the general performance.

Specifications

Product overview

    1. Power connector (DC)
    2. Network connector
    3. SD memory card slot
    4. Status LED indicator
    5. Control button
    6. RCA connector
    7. Audio-in connector
    8. I/O connector

    LED Indicators

    Status LEDIndication
    UnlitUnlit for normal operation.
    Green

    Steady green for normal operation.

    AmberSteady during startup and when restoring settings.
    RedSlow flash for failed upgrade.
    Red/Green

    Flashes red/green fast when identifying an audio device is selected.

    SD card slot

    NOTICE
    • Risk of damage to SD card. Don’t use sharp tools, metal objects, or excessive force when inserting or removing the SD card. Use your fingers to insert and remove the card.
    • Risk of data loss and corrupted recordings. Unmount the SD card from the device’s web interface before removing it. Don’t remove the SD card while the product is running.

    For SD card recommendations, see axis.com.

    microSD, microSDHC, and microSDXC Logos are trademarks of SD-3C LLC. microSD, microSDHC, microSDXC are trademarks or registered trademarks of SD-3C, LLC in the United States, other countries or both.

    Buttons

    Control button

    • The control button is used for:
    • Calibrating the speaker test. Press and release the control button and a test tone is played.

    • Resetting the product to factory default settings. See Reset to factory default settings.

    Connectors

    Network connector

    RJ45 Ethernet connector with Power over Ethernet (PoE).

    NOTICE

    The product shall be connected using a shielded network cable (STP). All cables connecting the product to the network shall be intended for their specific use. Make sure that the network devices are installed in accordance with the manufacturer’s instructions. For information about regulatory requirements, see the Installation Guide at www.axis.com.

    I/O connector

    Use the I/O connector with external devices in combination with, for example, motion detection, event triggering, and alarm notifications. In addition to the 0 VDC reference point and power (12 V DC output), the I/O connector provides the interface to:

    Digital input
    For connecting devices that can toggle between an open and closed circuit, for example PIR sensors, door/window contacts, and glass break detectors.
    Digital output
    For connecting external devices such as relays and LEDs. Connected devices can be activated by the VAPIX® Application Programming Interface, through an event or from the device’s web interface.

    4-pin terminal block

    FunctionPinNotesSpecifications
    DC ground10 VDC
    DC output2

    Can be used to power auxiliary equipment.
    Note: This pin can only be used as power out.

    12 VDC
    Max load = 50 mA
    Configurable (Input or Output)3–4Digital input – Connect to pin 1 to activate, or leave floating (unconnected) to deactivate.0 to max 30 VDC
    Digital output – Internally connected to pin 1 (DC ground) when active, and floating (unconnected) when inactive. If used with an inductive load, e.g., a relay, connect a diode in parallel with the load, to protect against voltage transients.0 to max 30 VDC, open drain, 100 mA

    Example

    1. DC ground
    2. DC output 12 V, max 50mA
    3. I/O configured as input
    4. I/O configured as output

    RCA connector

    1 White connector

    2 Red connector

    Audio output

    Audio out (left)

    Audio out (right)

    API commands

    VAPIX® is Axis’ own open API (Application Programming Interface). You can control almost all functionality available in Axis devices through VAPIX®. To get access to the complete VAPIX® documentation, join Axis Developer Community at axis.com/developer-community

    Enter the commands in a web browser, and replace <deviceIP> with the IP address or host name of your device.

    Important

    The API commands execute immediately. If you restore or reset your device all settings will be lost. For example action rules.

    Example

    Restart the device

    Request
    http://<deviceIP>/axis-cgi/restart.cgi

    Example

    Restore the device. The request returns most settings to default values, but keeps the IP number.

    Request
    http://<deviceIP>/axis-cgi/factorydefault.cgi

    Example

    Reset the device. The request returns all settings including IP number to default values.

    Request
    http://<deviceIP>/axis-cgi/hardfactorydefault.cgi

    Example

    See a list of all device parameters.

    Request
    http://<deviceIP>/axis-cgi/param.cgi?action=list

    Example

    Get a debug archive

    Request
    http://<deviceIP>/axis-cgi/debug/debug.tgz

    Example

    Get a server report

    Request
    http://<deviceIP>/axis-cgi/serverreport.cgi

    Example

    Capture a network trace of 300 seconds

    Request
    http://<deviceIP>/axis-cgi/debug/debug.tgz?cmd=pcapdump&duration=300

    Example

    Enable FTP

    Request
    http://<deviceIP>/axis-cgi/param.cgi?action=update&Network.FTP.Enabled=yes

    Example

    Disable FTP

    Request
    http://<deviceIP>/axis-cgi/param.cgi?action=update&Network.FTP.Enabled=no

    Example

    Enable SSH

    Request
    http://<deviceIP>/axis-cgi/param.cgi?action=update&Network.SSH.Enabled=yes

    Example

    Disable SSH

    Request
    http://<deviceIP>/axis-cgi/param.cgi?action=update&Network.SSH.Enabled=no