R2511-HP MSR Router Series Voice Configuration Guide(V5)

7
messages. The originating SIP endpoints directly re-originate a session request message to the terminating SIP
endpoints. The terminating SIP endpoints also directly return a reply message to the originating SIP endpoints.
As a SIP endpoint, the voice router needs to exchange information with the servers to accomplish
functions such as registration. For more information, see "Configuring SIP."
3. Fax protocol
FoIP complies with ITU-T T.30 and T.4 on PSTN and T.38 on the IP network.
{ T.30 defines the procedures necessary for document transmission between facsimile terminals on PSTN. It
gives detailed descriptions and stipulations on the communication process, signal format, control signaling, and
error correction of Group 3 facsimile terminals on the general switched telephone network.
{ T.4 is a standard protocol used for document transmission between Group 3 facsimile terminals. It
standardizes image coding, signaling modulation, rate, transmission time, error correction, and document
transmission of Group 3 facsimile terminals.
{ T.38 describes the technical features necessary to transfer facsimile document in real time between Group 3
facsimile terminals over the Internet or other networks by using IP protocols. It gives descriptions and stipulations on
communication mode, message format, error correction, and part of communication processes.
Before applying the fax service, configure the technical protocols and physical characteristics. For
more information, see "Configuring fax over IP."
Dial plan
Dial plan configuration provides diversified number management functions. Dial plan configuration
involves number substitution and number application.
• Number substitution means applying the number substitution rules to the calling and called
numbers to substitute them. Number substitution includes number substitution rules and binding of
number substitution rules.
• Number application means matching numbers, controlling the sending of numbers, and selecting
voice entities according to match templates. Number application includes number match policy,
rules in the match order for voice entity selection, maximum-call-connection set, number sending
mode, and call authority control.
The dial plan configuration directly affects the selection of voice entity and the final call connection. The
dial plan configuration involves global configuration, voice subscriber line configuration, and voice
entity configuration. You can select one or more configurations for a dial plan. The global configuration
acts on calls of the whole VoIP gateway, the voice entity configuration on those of the voice entity, and
the voice subscriber line configuration on those of the voice subscriber line. For more information, see
"Configuring dial plans."