Aastra OpenCom 510 User Manual page 112

Configuration Examples Useful Information on Internet Access
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The protocol will function without TCP/UDP port numbers, e.g. ICMP or IGMP.
The OpenCom 510 NAT has suitable processes for ensuring the functions of many
important protocols affected by these rules. These are the protocols FTP (in
"active" mode), CuSeeMe ("videoconferencing"), IRC ("chat"), ICMP errors ("trace-
route") and ICMP echo ("ping").
Depending on the internet telephony protocol (VoIP, SIP) the required NAT
extension ("Full Cone NAT") or RTP-Proxy is activated on the Media Gateway Card.
Protocols which require inward-directed connection establishment can be confi-
gured in the Net Configuration: Port Access menu. For further information, refer
to the online help of this menu.
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