Aastra OpenCom 510 User Manual page 199

Frequently Asked Questions
■
the internal number used by the OpenPhone 27 to establish the data con-
nection is configured for outgoing call distribution (Configurator, PBX Confi-
guration: Call Distribution: Outgoing menu).
Indirectly via RAS access
If the Internet is accessed indirectly via RAS, the system administrator should make
sure that:
■
permission has been given for Internet access via RAS (Configurator, Net Con-
figuration: Firewall menu),
■
an internal number is configured for RAS access (Configurator, Net Configu-
ration: Connections: RAS menu),
■
your user group has been granted RAS access rights (Configurator, User
Manager: User Groups menu).
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 510 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 510 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.
Internet
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