Programs

The Applications program area includes components that use the SS7 protocol stack rather than components of the SS7 protocol stack. Traditionally, OpenSS7 has not included SS7 applications, however, with stack compents close to completion, the scope of OpenSS7 has been expanded to include applications. The current components in this area include: SS7 Codecs (Deprecated), GSM/MAP HLR GPRS, SMSC, IN (800/CMS/CLASS/CNAM/LIDB), LNP, ENUM/NAPTR, CS/AIN Call Model, OpenSwitch, Asterisk PBX Integration, and Kannel Integration.

The SS7 Stack has been the principle focus of OpenSS7 for some time. The SS7 stack components provide the various protocol levels of the SS7 protocol. These include MTP Level 2, MTP Level 3, SCCP, TCAP, ISUP and BICC.

The ISDN Stack is a recent focus of OpenSS7. The ISDN stack components provide the various protocol levels of the ISDN protocol. These include, ISDN Q.931, Q.932, Q.933, LAPD (Q.921), LAPF (Q.922), LAPB (X.25), as well as related IDLC, V5.2, GR-303-CORE, DPNSS, DASS.

The IP SS7 stack has been a focus of OpenSS7 for some time as well. The SIGTRAN stack components provide the basis for redundancy and distribution in OpenSS7 and provide the principle glue between the SS7 protocol levels in a redundant and distributed system. IP SS7 stack components include IPSS7, M2PA, M2UA, M3UA, SUA, TUA and TALI.

The VoIP stack is a recent focus of OpenSS7. The VoIP stack components provide signalling in the VoIP environment. VoIP stack components include BICC, H.225.0 and SIP-T.

The MG Switching stack is a recent focus of OpenSS7. The MG stack components provide signalling in the MG environment. MG Switching stack components include CH, MX, MG, MGCP and MEGACO.

Hardware Device Drivers directly control specialized hardware for SS7, ISDN, SIGTRAN and VoIP. In addition Media Gateway (MG) switching of voice channels can be performed by some cards. A number of device drivers are available including the Sealevel ACB56 ISA card (for V.35), the E400P-SS7 and T400P-SS7 quad E1/T1 span cards, and the E100P-SS7 and T100P-SS7 single E1/T1 span cards. In addition, OpenSS7 SS7 and ISDN stacks can be run embedded on the PTI CPC-388 octal E1/T1/J1 cards.

OpenSS7 has developed IP transport for LiS STREAMS that supports all IP components including Transport Provider Interface (TPI) STREAMS interfaces to Linux native TCP, UDP and RAW sockets. In addition, the IP transport packages support TPI STREAMS interface to our Linux native SCTP stack.

OpenSS7 SS7, SIGTRAN and IP transport stacks can run embedded on the CompactPCI CPC-388 octal E1/T1/J1 cards. Systems running Embedded Linux can run all the OpenSS7 components.

OpenSS7 provides the Operating System underpinnings to support OpenSS7 protocol stacks. OpenSS7 protocol stacks are based on STREAMS, and OpenSS7 provides the Linux STREAMS, and Linux Fast-STREAMS packages used by many vendors of SS7 and related protocol stacks of Linux. Also, OpenSS7 provides D2DK/D3DK ABIs for Linux in conjunction with STREAMS, as well as fundamental networking components for STREAMS. Also, libraries for use of STREAMS and STREAMS Networking is provided, including libstreams (STREAMS), libxnet (XTI/TLI), and libsocket (Sockets interface for STREAMS).