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IP-Fax Function
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-Terminology
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❖ H.323
A protocol that specifies the compression/decompression method of audio,
images, and data files sent or received via one-to-one communication over a
LAN or Internet.
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❖ SIP
A communication control protocol for Internet telephone that utilizes VoIP
(which converts voice information to IP packets) and is equipped with func-
tions such as transfer and caller number display similar to telephone network
compared to other protocols such as H.323.
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❖ Gatekeeper (VoIP gatekeeper)
A gatekeeper manages devices connected to an IP network and converts alias
telephone numbers to IP addresses and performs authentication functions. In
addition, a gatekeeper governs band (transmission rate assignment) and ac-
cess control.
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❖ Gateway (VoIP gateway)
A gateway connecting a telephone network and IP network, it has functions
such as protocol conversion for connect these different network, and also con-
nects communication devices (telephones, facsimiles, etc.) to a LAN or other
network.
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❖ 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: Issues requests and relays responses.
• Registrar server: Receives registration of a users positional information
within an IP network.
• Redirect server: Used to inquire the destination of a request.
Notes on Using IP-Fax
• You cannot send to a firewall-protected network.
• You cannot use telephones on a LAN.
Functions not Available for IP-Fax Transmission
You can use the following functions with standard fax transmission, but not IP-
Fax transmission:
• Batch transmission
• Manual dial
JupterC2_Fax_EN-F_FM.book Page 71 Tuesday, November 30, 2004 2:47 PM