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APS-SS7

SS7 MTP-2 Software for ITU, ANSI and TTC Standards

Overview

The APS-SS7 Driver is part of the Adax Protocol Software (APS) product range. It supports Intelligent Network (IN) and general Wide Area Network (WAN) connectivity via the SS7 protocol.

Performance is in the Details

The APS-SS7 Driver runs the Adax APC boards and provides complete MTP level 2 data communication control conforming to the ITU, ANSI, TTC, BELLCORE, and AT&T versions of SS7. This includes signal unit formatting, transparency ("bit stuffing"), error recovery by two types of retransmission, error monitoring, sequence number control, link status control, fill in signal unit generation, and a high-speed HDLC transport mechanism.

The Adax APS-SS7 Driver performs all signal unit formatting, such as signal unit delimiting with flags, CK generation and detection, and zero bit insertion and deletion for transparency. The user can transmit and/or receive multiple MSU’s because of APS-SS7’s buffer management mechanism. Part of the buffer management is the APC board’s on-chip dual channel DMA engine with one channel for receive and one channel for transmit.

The APS-SS7 Driver handles all error recovery using either Basic Error Recovery (BEC) or Preventive Cyclic Retransmission (PCR) methods as specified by the user. It also performs all sequence numbering as required in the SS7 specifications.

DLPI Support

All Adax drivers implement a UNIX streams-based DLPI/LLI programming interface that allows high performance and efficient access to the board, which is part of the process that minimizes CPU usage. This interface has been used successfully in the commercial data and telephony markets with much success because of its ease of use and integration.

Integration Expertise

Adax adds a key ingredient no other company can match – expert technical services. Combined with Adax’s fully integrated software and hardware products, our technical expertise helps you build the highest performance foundations for your network. You can count on Adax to be there with you no matter what changes may occur in operating systems, bus architectures, applications, or protocols.

Operating System Support and Adax Protocol Controllers

All Adax products are available for PCI, cPCI and PMC architectures, supporting Linux and Solaris Operating Systems. VxWorks, HP-UX and IBM AIX are also supported for certain products.

The SS7 software operates with the following Adax products: HDC High Density Channelized Controller for Multiple Protocols.

Adax Software

Adax Protocol Software (APS) is a suite of products designed to get the most out of each Adax hardware product and is supplied with a set of common APIs enabling simple integration of the upper layers. Adax HDLC, SS7, SCTP, X.25, Frame Relay, LAPB, LAPD and LAPV5 provide a well-balanced, high performance, low overhead direct connection to the network.

Fastest Time to Market

Adax provides extremely fast time to market through simplicity of design and a modular product range. This common software interface ensures a simple migration path and provides a flexible and portable solution. The API’s between products remain the same, preserving the investment in the higher layer software and applications. This compatibility enables quick upgrades to next generation requirements and easy field upgrades to expand the capabilities of installed systems.