Vectura SoftSwitch is a gatekeeper used in next generation communication networks based on the Voice over IP (VoIP) technology.
The gatekeeper function is performed in several ways and with different control protocols, allowing the equipment to behave as:
- Media Gateways and Access Gateways Controller: In these cases, the function is known as Media Gateway Controller (MGC), Media Gateway Control Function (MGCF) or Mobile Switching center Server (MSS). It supports MGCP and H.248 protocols.
- Call routing and terminal service controller: In these cases it is known as Back-to-back User Agent (B2BUA), SIP Proxy Server, or SIP Server. It supports SIP, SIP-T, and SIP-I protocols.
For the interworking with the legacy TDM network, Vectura SoftSwitch supports several signaling protocols, such as SS7 (Common Channel Signaling System No. 7), V5.2, PRI (signaling Q.931 – primary access), and R2. For the SS7 signaling, it supports transport through MTP, using traditional E1 trunks or through SIGTRAN (M2PA, M2UA, M3UA, IUA, V5UA).
It can assume the function of class 4 gatekeeper (traffic function) or class 5 (control of Access Gateways and individual user terminals), both with protocols SIP and MGCP/H.248. In the class 5 controller function, it can offer all supplementary services to subscribers, just like in the TDM network. This function is called PES – PSTN Emulation Subsystem.
Vectura SoftSwitch can interwork a call between any control protocols (SIP, MGCP, and H.248), becoming an essential element to connect the control of calls in the network with the service platforms, whether SIP, INAP, or CAMEL protocol. It also allows the application of basic services on calls, such as portability, supplementary services, black-list and white-list services, and it is not necessary to have an external service platform.
Vectura SoftSwitch is able to support a great variety of protocol profiles simultaneously, with an extraordinary interoperability power. Profile is a variation of a protocol, edited and associated to certain ports or media gateways.
Vectura SoftSwitch has modular architecture with distributed processing, which gives it extreme reliability through N+1 redundancy. Besides the redundancy of the network element, Vectura Softswitch supports geographic redundancy, with load partition with another equipment.
This architecture allows Vectura SoftSwitch to be set up from small to extremely large capacities, without impairing performance. It can control up to 600,000 subscribers and make the trunking of up to 240,000 ports, with call rates of up to 35 MBHCA (million busy hour call attempt), for the equipment as a whole, and up to 20 KBHCA (thousand busy hour call attempts) for E1 data.