Frequently Asked Questions Internet
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For information on the installation of software and on configuring Internet access,
refer to the “OpenPhone 26/27” user guide.
A SIP connection only passes unidirectional voice. What is the reason?
You did not use the OpenCom 100 as internet router or 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. You can also use the
OpenCom 100 for internet access. Correct the STUN setting in the PBX Configu-
ration: SIP Provider menu.
Is it possible to use Q.SIG-IP connections via an Internet access with dynamic
IP address?
Q.SIG-IP connections require a fixed IP assignment for technical and security
reasons. Therefore you need an Internet access with a fixed IP address. It is pos-
sible to tunnel a Q.SIG-IP connection through a VPN connection. A VPN con-
nection 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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