Tadiran Telecom Coral IPx Office, Installation And Hardware Reference Manual, Page: 491 / 510

Coral IPx Office Installation Manual System Networking
11-5
NTU Office Car
d
D
escription
11
0
The Coral IPx Office system enables seamless integration between the digital and IP
world with or without an NTU Office card. With an NTU Office card, the Coral IPx
Office can connect to the WAN directly from the WAN port without any additional
external router. See
Figure 11-2
.
Media Stream from the Digital World to the LAN and WAN
PCM streams are directed from the Coral to the MRC, which converts the PCM
streams into RTP packets. See
MRC Card, page 8-29
, for more information.
RTP packets designated for the LAN are directed through the UGW internal switch.
The UGW switch directs the media stream to LAN ports 1-8. Either the NTU Office
card or the DHCP server provides the dynamic IP addresses to the devices, enabling
connection to the endpoints on the LAN.
RTP packets designated for the WAN are directed to the NTU Office card, which then
directs them through the external WAN port on the front panel to their destination on
the WAN.
Media Stream from the LAN and WAN to the Digital World
WAN Packets are directed from the WAN port directly to the NTU Office card. The
NTU Office card redirects the RTP packets to the MRC card, where they are translated
into PCM streams. Finally, the PCM streams are directed to the digital network.
LAN packets are directed from LAN ports 1-8 through the internal UGW switch,
which is embedded on the MCB Office card. The packets are then directed into the
MRC, which converts the RTP packets into PCM streams. Finally, the PCM streams
are directed to the digital network.
...................................................................................................
3 System Operation with an NTU Office Card