Traversing The Firewall for SIP Call Completion. Steven J. Johnson President Ingate Systems Inc. The Third Big Wave of Internet Usage. SMTP created E - mail. HTTP created the Web. SIP will create realtime global connectivity from person to person!. Trends in SIP Adoption.
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Steven J. Johnson
Ingate Systems Inc.
SMTP created E-mail
HTTP created the Web
SIP will create realtime global connectivity from person to person!
SIP unaware FirewallsWhy not Use VPN?
IP to IP to any external user!
SIP Media, Voice/Video etc
SIP-capable firewall or
SIP-enabling CPE device
Session Border ControllerWhat about Carrier Session Border Controllers?
MediaWhat About a SIP ALG Firewall
SIP ALG Firewall
SIP Proxy Firewall
Extra SIP functions
Remote user moduleSupport for Remote Workers
SIP capable proxy-basedfirewall
VoIP services through Broadworks Servers hosted by the Service Provider or Enterprise main office
VoIP toPSTN services through Broadworks Servers and a PSTN Gateway hosted by the Service Provider or Enterprise main office
Settings, user data
WorkstationsVoIP Survival in Hosted Environments
Other SIP Users
Local calls within the domain are handled by the Ingate Firewall or SIParator
Optional local backup PSTN Gateway is used for routing VoIP to PSTN calls.
WorkstationsHost Down-VoIP Survival Activated
Other SIP Users
With SIP-Proxy and -Registrar
SIP-enables any firewall
SIParator® 88The Ingate Family
800 RTP sessions
500 RTP sessions
240 RTP sessions
150 RTP sessions
30 RTP sessions