NEC 2000 IPS manual Connections to Legacy Stations and Trunks, Remote Connections of IP Stations

Chapter 13 Voice Over IP (VoIP)

Connections to Legacy Stations and Trunks

The IP station can communicate with legacy stations and trunks (including H.323 trunks) via IP-PAD that converts voice packet data to PCM signals. Call control signals are transmitted to MP over the LAN, while voice packets are transmitted via IP-PAD. The number of IP-PADs depends on the traffic volume of connections between the IP station and legacy stations and trunks.

Remote Connections of IP Stations

The IP stations can be located at remote sites over an intranet/internet/PSTN/ISDN via routers. IP stations can be installed behind routers that are configured to use NAT (Network Address Translation) at the remote location. This allows IP station users at remote sites to use the UNIVERGE NEAX 2000 IPS features as same as those at local site. The number portability among the sites is available, so that the same IP station user can login at any site, using the single login code and password. The IP station has two operating modes: Local Connection Mode and Remote Connection Mode. Each operating mode can have individual VoIP communication parameters such as CODEC selection list and usable bandwidth, so that the appropriate communication is available even if the IP station user logs in at either local site or remote site.

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