4
From. the. following. sections,. choose. the. heading. that. best. applies. to. your.
equipment or networking configuration.
Network With Multiple Public IP addresses
A Public IP address is visible on the Internet. (Most commonly found in business
environments.)
Recommended.Procedure:.If.there.is.an.available.public.IP.address,.simply.
enter the IP address, subnet mask, and gateway into the applicable fields
in.the.
Network Settings
.screen..If.the.network.has.a.DHCP.server,.select.
the.checkbox.under.the.
Network Settings
.that.says,.“DHCP.”.(Your.network.
administrator.will.be.able.to.tell.you.whether.or.not.the.network.has.a.DHCP.
server.)
Potential.Issues:
Some firewalls are configured in a way that could potentially
restrict H.323 data flow. Most current corporate firewalls are H.323 compliant.
If this is the case, configuring the firewall is accomplished by simply opening
the.necessary.H.323.ports.into.the.network:
Port.120.(TCP)
Ports.15328.–.15333.(UDP.&.TCP)
If your particular firewall does not have this option, consult the firewall’s documentation
on how to open specific ports needed for H.323 communications.
Broadband Modem and One PC
(This is the most common scenario found in a home or home office that currently
has.one.PC.connected.to.its.broadband.modem.)
Recommended. Procedure:. Request. from. your. ISP. an. additional. public. IP.
address..With.a.second.public.IP.address,.the.VideoPhone.will.be.visible.to.
the.outside.world.just.as.the.existing.PC..The.ISP.can.either.assign.a.static.IP.
address.or.allow.you.to.dynamically.request.the.IP.address.via.DHCP..Follow.
the.instructions.in.
Broadband Modem Only
.section,.below,.depending.on.what.
your.ISP.requires.
Because. most. broadband. modems. have. only. one. Ethernet. port,. it. will. be.
necessary.to.install.a.hub.or.switch.between.the.modem.and.the.rest.of.the.
network..Using.an.Ethernet.cable,.connect.the.modem’s.Ethernet.port.to.the.
applicable.uplink.port.on.the.hub..Once.that.is.done,.you.can.plug.the.PC.and.
DVC-1000.VideoPhone.into.any.other.available.port.
Using the DVC-1000 with Routers, Gateways
or Broadband Modems (continued)