80 Glossary
Glossary
PPTP
Point-to-Point Tunneling Protocol encapsulates other protocols to create VPNs. It is developed
jointly by several vendors.
private IP
address
An IP address assigned to a computer on the RSGu3502 LAN by the DHCP server on the
RSGu3502 for a specified lease time. Private IP addresses are used by the RSGu3502 LAN only;
they are invisible to devices on the Internet. See also
public IP address
.
PSTN
The public switched telephone network is the traditional circuit-switched, voice-oriented telephone
network. See also
POTS
.
public IP
address
A public IP address is visible to devices on the Internet. See also
private IP address
.
QoS
quality of service
RIP
Routing Information Protocol enables routers to exchange routing information with other network
routers. Any RIP-enabled router:
•
Sends automatic update packets containing its routing table periodically (every 30 seconds)
•
Accepts periodic updates from other routers and adds, deletes, or modifies routes in its routing
table accordingly
•
Responds to requests for its routing table
RTP
Real Time Protocol for voice traffic.
RJ-11
The most common type of connector for household or office phones.
RJ-45
The most common type of port for Ethernet networks.
router
On IP networks, a device connecting at least two networks, which may or may not be similar. A
router filters data based on the IP address, examining the source and destination IP addresses to
determine the best route on which to forward it.
server
A dedicated computer that supplies files, data, or services to other “client” computers
or devices.
