DANAR - SS7 Hardware Products

SS7 Hardware

ISA CCS7 Attachment

General:

The Danar Corporation CCS7 Attachment is a full length Industry Standard Architecture (ISA) card that provides the following:

A 16 bit SS7 link controller dedicated to SS7 link management for nearly all Message Transfer Part layer 2 (MTP2) functions. This device will handle data rates to 4 mbps.

Industry Standard Architecture personal computer interface - full 16 bit wide data path for I/O and memory. Available interrupts are: 3, 4, 7, 9, 10, 11, 12, 15.

Each card has 16 contiguous I/O bytes assigned for register access. The base address of these registers is assigned by a 6 position DIP switch to any 16 byte boundary in the I/O space. A device "signature" register allows for automatic detection of cards in a system. Configuration is assigned based on I/O address and no other settings besides the I/O address assignment are necessary.

512 Kbytes of dedicated transmit/receive buffer on board. The link controller has DMA access to this memory and the host PC has access through a DOS paged interface that makes the memory appear as main memory in a selected 16 Kbyte window between C000:0000 and DFFF:FFFF. For advanced operating systems the memory can be configured as part of the extended memory address space above 1 Mbyte. This applies to operating systems such as OS/2, UNIX or others which do not have the DOS memory architecture limitations.

Pluggable physical interface modules. The network interface is a daughterboard that can be changed to meet application requirements. Presently available are: CCITT V.35 at 56 or 64 Kbps determined by network supplied clocking, and CCITT G.703 co-directional at 64 Kbps (network supplied clocking). The V.35 interface also has the ability to supply transmit clock so that two cards can be attached to each other in a laboratory development environment with a simple crossover cable, eliminating the need for modems or modem eliminators. Additional capability is also built into the V.35 interface for support of external line redundancy to allow architectures where multiple machines can share access to the SS7 network via a standard line sharing device. Other physical interfaces can be simply designed to meet your application needs.

Performance:

An Intel 486DX2-50, 50 Mhz machine can handle 2 links operating at 56 Kbps and 100% utilization (message length of 100 bytes) with an SS7 stack that includes MTP, SCCP and TCAP as well as TCP/IP operating on an Ethernet adapter. Message delay due to SS7 stack and hardware in this environment is about 5 milliseconds in each direction through the stack. About 25% of the machine bandwidth is used for the SS7 stack at full traffic usage.

Environmental:

The attachment is designed to operate in the same environment as any standard personal computer.

Warranty:

2 years repair or replace upon failure due to anything besides physical abuse.

Includes:

A diskette with diagnostics and suitable adapter cable (V.35 or G.703).

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