A
SPA9000 Voice System Administration Guide
165
Advanced Topics in SPA9000 Administration
This appendix provides more detailed technical information for administrators who
want to understand how the SPA9000 Voice System works.
•
“Technology Background,” on page165
•
“SPA9000 Architecture,” on page170
•
“SIP-NAT Interoperation,” on page172
•
“Advanced Call Control and Routing,” on page173
•
“Configuring Vertical (Supplementary) Service Codes,” on page173
•
“Advanced Topics for SPA400 Voice Mail Service,” on page178
•
“Remote Provisioning Features,” on page183
Technology Background
This section provides background information about the technology and protocols
used by the SPA9000 system. It includes the following topics:
•
“Session Initiation Protocol,” on page166
•
“SPA9000 Media Proxy,” on page167
•
“Using the SPA9000 with a Firewall or Router,” on page168
•
“SPA400 SIP-PSTN Gateway,” on page169
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