Internet - Aastra OpenCom 100 Mounting And Commissioning User Manual

Frequently Asked Questions

Internet

Question: Our network has grown over time, with several segments con-
nected by one central router. How can PCs from all segments connect to the
OpenCom 100?
If several routers are configured for your network in different segments, you can
enter extra static routes in the Network: Routes menu.
Question: In our network the OpenCom 100 dynamically issues the IP ad-
dresses by DHCP. Can I firmly assign the IP address for our internal server PCs
(mail, Web)?
You need a static address assignment for these PCs. Make the appropriate host
assignment entries in the Configurator (Network: Hosts menu). Create a static
DHCP entry for each host assignment in the Network: DHCP menu. Activate
"Dynamic and static address" for the DHCP server.
19.6 Internet
Question: I cannot access our company Web site.
Outside your system, your company Web site is accessed at "www.firm.com", but
in the Configurator you have entered "firm.com" as the domain. Your company's
site URL thus counts as an internal URL and can only be accessed by entering the
direct IP address. If required, change the domain setting in the Network: LAN
menu.
Question: Why do some Internet services not work even though they can be
used when dialling in directly via a modem?
Some Internet services require an active connection coming from the Internet. But
the configured filter rules prevent this. Plus, it is not possible to establish incoming
Internet connections with the PCs directly owing to the network address trans-
lation process.
It is possible to redirect incoming connections in the Configurator, menu
Network: Port Forwarding. You should secure the redirection target (PC or
server) with a suitable firewall software.
Question: A SIP connection only passes unidirectional voice. What is the rea-
son?
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 Telephony:
Trunks: SIP Provider menu.
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