Internet
Frequently Asked Questions
331
menu). Create a static DHCP entry for each host assignment in the
Network
:
DHCP
menu. Activate “Dynamic and static address” for the DHCP server.
Internet
Question: A SIP connection only passes unidirectional voice. What is the
reason?
The STUN server of the SIP provider is unavailable. You need to activate the
SIP support at your internet router, such as “SIP-ALG” or “Full Cone NAT”
functions. Correct the STUN setting in the
Telephony
:
Trunks
:
SIP Provider
menu.
Question: Is it possible to use Q.SIG-IP / SIP tie line connections via an
Internet access with dynamic IP address?
No. Q.SIG-IP / SIP tie line connections require (as with IP system telephones
and SIP terminals) a fixed IP assignment and a connection without NAT for
technical and security reasons. It is possible to tunnel a Q.SIG-IP / SIP tie line
connection through a VPN connection. A VPN connection offers the possibility
to determine the peer’s IP address with a DynDNS service during connection
setup. VPN and DynDNS can be realized with external servers or routers.
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