A SIP trunking service can offer significant cost-savings to enterprises by allowing them to use very cost-effective SIP trunks in place of expensive PSTN trunks. Instead of the bundles of physical wires delivered from service providers to businesses in traditional telephony, a SIP trunk allows a company to replace traditional fixed PSTN lines with PSTN connectivity via an internet connection delivered by an Internet Telephony Service Provider (ITSP).
Dialogic® BorderNet™ Gateways can play a critical role in SIP trunking services.
On the service provider side, a BorderNet 2020 IMG can connect to the SS7/PSTN network and handle switching, signaling, and media processing in a single unit while relaying calls to a BorderNet 3000 SBC for classic session border control functions. Although the diagram below shows a simplified view of SIP trunking service, a single 2020 IMG could be handling thousands of calls per minute and one 3000 SBC supplying secure session management to multiple enterprise installations with BorderNet 500 Gateways connecting to VoIP or legacy TDM equipment.
The illustration on this page shows a service provider SIP trunking delivery environment and its connection to enterprise customers at the network edge. A BorderNet 500 Gateway can be used at the enterprise edge to provide seamless legacy firewall traversal, SIP security and interoperability, and a logical service termination point that allows the monitoring and management of call quality.
Service Provider SIP Trunking Environment and Enterprise Network Edge