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COMpact 5200/5200R/5500R - Firmware V7.2 - Advanced Information V04 07/2018
Settings – Réseaux publics
Voix sur IP (VoIP)
Protocole IP
IPv4
IPv4 operating mode is used for communications with the VoIP provider.
IPv6
IPv6 operating mode is used for communications with the VoIP provider.
automatique
The PBX first checks whether the VoIP provider supports IPv6. If so,
operating mode IPv6 is used for communications with the VoIP provider.
Otherwise, operating mode IPv4 is used.
Note:
If the actual IP operating mode is IPv6, STUN cannot be used as
a NAT method either for SIP or RTP.
Sécurité accrue
The provider provides better levels of security to protect the PBX
against external attacks.