Auerswald COMpact 4000 Operation Manual page 597

IP protocol
IPv4: IPv4 operating mode is used for communications with the VoIP provider.
IPv6: IPv6 operating mode is used for communications with the VoIP provider.
automatically: 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.
Increased security
The provider provides better levels of security to protect the PBX against external attacks.
PBX CERTIFICATE
Store in the PBX
Select a certificate that is stored on a data storage device and store it in the PBX.
Delete
Deletes a certificate currently saved in the PBX after user confirmation at the prompt.
COMpact 4000 - Firmware V6.6A - Installation, Operation and Configuration V03 03/2016
Settings
VoIP
VoIP Provider Settings
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