Auerswald COMpact 5200 Advanced Information page 635

RTP
is swapped with the public IP address. This function is performed in the
reverse direction for the reply.
Disabled (use local address): 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.
• It is essential you put additional protective measures in place.
utilisier l'adresse IP publique statique
Requirements:
• Registered fixed IP address (see Settings)
NAT traversal is performed by the PBX. The VoIP provider requires a
connection via a static public IP address.
Signalisation DTMF
Requirements:
• Inband signalling: uncompressed codec (G.711)
Entrant
The PBX uses the same channel to transfer the DTMF signals and the
voice data (DTMF tones).
Sortant (RFC 2833)
The PBX uses different channels to transfer the DTMF signals and the
voice data. The DTMF tones are filtered out of the voice data.
COMpact 5200/5200R/5500R - Firmware V7.4A - Advanced Information V08 06/2019
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