Ricoh Aficio MP 6500 S/P Facsimile Reference - Page 33
Terminology, H.323, Gatekeeper VoIP gatekeeper, SIP server, Gateway VoIP gateway
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IP-Fax Functions Reference p.141 "Types of Reception" "Connecting the Machine", General Settings Guide "System Settings", General Settings Guide 1 "Facsimile Features", General Settings Guide Terminology The following are words you should know when using IP-Fax: ❖ H.323 A multimedia communication protocol that sends or receives files via one-toone communication over a LAN or the Internet. ❖ SIP A communication control protocol for Internet telephone that utilizes VoIP (which converts voice information to IP packets) and is equipped with functions such as creating, modifying, and terminating sessions with one or more participants. ❖ Gatekeeper (VoIP gatekeeper) A gatekeeper manages devices connected to an IP network and converts alias telephone numbers to IPv4 addresses and performs authentication functions. In addition, a gatekeeper governs band (transmission rate assignment) and access control. ❖ SIP server A SIP server mediates connection requests between devices connected to an IP network and is composed mainly of servers that have the following three functions: • Proxy server: Receives SIP requests and forwards them on behalf of the requestor. • Register server: Receives information about a device's address within an IP network and registers them in the database. • Redirect server: Used to inquire the destination address. ❖ Gateway (VoIP gateway) A gateway connecting a telephone network and IP network, it has functions such as protocol conversion for connecting these different networks, and also connects communication devices (telephones, facsimiles, etc.) to a LAN or other network. 23