Axis A8004-VE User Manual page 30

AXIS A8004-VE Network Video Door Station
Voice over IP (VoIP)
4. Enter the SIP port number and the SIP TLS port number. For more information, see Port Settings on page 30.
5. Select the protocols you want to enable for NAT traversal. See Network Address Translation (NAT) Traversal (port
forwarding) on page 30.
6. Click Save.
NOTICE NO NO TICE TICE
Allowing incoming calls enables the AXIS product to accept calls from any device connected to the network. It is
recommended to disable incoming calls for products that are accessible from public networks or the internet.
Note
Even if you choose to not enable SIP, you can configure the SIP settings. But remember that when SIP is disabled, you
cannot make or receive calls.
SIP Setup Assistant
The SIP Setup Assistant helps you with the SIP configuration. When you have completed all the steps in the setup assistant, the
product is ready to perform basic VoIP actions, such as making a call when the call button is pressed. Each time you finish the SIP
setup assistant, new action rules and DTMF rules will be created.
Port Settings
• SIP port – Enter the port used for SIP sessions. The signalling traffic through this port will be non-encrypted. The default
port number is 5060.
• SIP TLS port – Enter the port used for SIPS sessions and TLS-secured SIP sessions. The signalling traffic through this port
will be encrypted using Transport Layer Security (TLS). The default port number is 5061.
Network Address Translation (NAT) Traversal (port forwarding)
Use NAT traversal when the Axis product is connected to the network behind a NAT router or firewall device.
VoIP services require clients to be servers as well, and many VoIP services carry IP address and port information in the application
data. Therefore, Axis products behind Network Address Translation (NAT) devices such as network routers need to use special
protocols for NAT traversal (port forwarding) so that calls can be linked to the correct host.
Without SIP-specific port forwarding, users of clients within the same private network would be able to talk to each other but
users of clients in different networks would not.
The following NAT traversal settings are available:
• STUN – Session Traversal Utilities for NAT (STUN). See page 30.
• TURN – Traversal Using Relays around NAT (TURN). See page 31.
• ICE – Interactive Connectivity Establishment (ICE). See page 31.
Each NAT traversal protocol can be used separately or in different combinations depending on the network environment.
Note
These settings are SIP specific. For more information about the product's general NAT traversal settings, see NAT traversal
(port mapping) for IPv4 on page 60.
Session Traversal Utilities for NAT (STUN)
Session Traversal Utilities for NAT (STUN) is a client-server network protocol that enables the product to ask a STUN server on the
Internet for a mapped public IP address. The STUN server response includes this IP address and port so that the client can use them
in its SIP messages to other hosts and clients.
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