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local IP address to the public network, the sending IP address is swapped
with the public IP address. This function is performed in the reverse direction
for the reply.
Disabled: NAT traversal is not performed by the PBX. The router which
connects the local area network with the Internet should be a properly
functioning, SIP-aware router which performs NAT traversal.
Enabled with use of STUN: NAT traversal is performed by the PBX. To
achieve this, a STUN server must also be specified for the VoIP provider.
Caution: Each time a port is opened on the NAT router, this
creates a potential source of danger.
DTMF signalling
Requirements:
•
Inband signalling: uncompressed codec (G.711)
COMmander 6000/R/RX - Firmware V7.0D - Advanced Information V19 04/2018
• It is essential you put additional protective measures in
place.
Settings – Public switched tel. networks
Voice over IP (VoIP)
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