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Enterprise Infrastructure
Solutions for SIP Trunking
Steven Johnson, Ingate Systems
Steps to SIP Trunking
Basics functionality:
 NAT/Firewall traversal
 Interoperability between IP-PBX and Service
Provider
 Quality of Service (QoS)
 Security
An Ingate solution can also enable Unified
Communications:
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Connecting remote users to the PBX
Secure interoffice connection
WiFi mobile phone communication
Multimedia communication
Benefits of SIP Communications
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Monthly cost savings
Single network for all communications
Lower cost of Moves, Adds and Changes
Disaster Recovery / Business Continuity
User provisioning
First step in achieving Unified
Communications
 Voice, Video, IM, Presence, etc.
 Remote workers
 WiFi mobile phone communication
Two Ways to Connect to a SIP Trunk
Over a Managed Line
Over the Public Internet
PSTN
PSTN
Public
Internet
SIP Trunking
Provider Network
SIP System
Public
Internet
SIP Trunking
Provider Network
SIP System
SIP Trunk
over Internet
Managed
SIP Trunk
IPPBX
IPPBX
Data & VoIP LAN
Data & VoIP LAN
Managed SIP Trunk Connected to Separate
Enterprise VoIP LAN in Operator’s Space
Public
Internet
No Remote
Users!
SIP Trunking
Provider Network
PSTN
SIP System
Managed
SIP Trunk
Operator:
Security
Warning!
Enterprise:
Security
Warning!
IP-PBX
Data LAN
VoIP LAN
?
?
No Soft or Multimedia Clients!
Managed SIP Trunking with SBC Adapting
SIP to NAT:ed Space of the Enterprise LAN
Public
Internet
No Remote
Users!
IP-PBX
SIP Trunking
Provider Network
PSTN
SIP System
Managed
SIP Trunk
Enterprise: Can
we trust having
our LAN pulled
to the operator?
Other
customers
VoIP& Data LAN
Ingate Firewall® Creating a Common Data and
VoIP LAN for Managed SIP Trunking Service
Public
Internet
Remote
Users
IP-PBX
SIP Trunking
Provider Network
PSTN
SIP System
Managed
SIP Trunk
Ingate Firewall®
Demarcation point and
SIP communication via
both WAN pipes.
Data & VoIP LAN
Soft Clients and Multimedia Terminals
Ingate SIParator® Used with Existing Firewall for
Managed SIP Trunking Service
Public
Internet
Remote
Users
IP-PBX
SIP Trunking
Provider Network
PSTN
SIP System
Managed
SIP Trunk
Ingate SIParator®
Demarcation point and
SIP communication via
both WAN pipes.
Data & VoIP LAN
Soft Clients and Multimedia Terminals
Ingate Firewall® Creating a Common Data and
VoIP LAN for SIP-Trunking over the Internet
Public
Internet
Remote
Users
IP PBX
SIP Trunking
Provider
PSTN
SIP System
SIP Trunk
over Internet
Ingate Firewall®
Demarcation point and
bringing SIP
communication to the LAN
Data LAN
Data & VoIP LAN with QoS
Soft Clients and Multimedia Terminals
Ingate SIParator® Used with Existing Firewall
for SIP Trunking Service over Internet
Public
Internet
Remote
Users
IP PBX
SIP Trunking
Provider
PSTN
SIP System
SIP Trunk
over Internet
Ingate SIParator®
Demarcation point and
bringing SIP
communication to the LAN
Data LAN
Data & VoIP LAN
Soft Clients and Multimedia Terminals
Thank You
Questions?