Specifications

3 SS7HD Board Product Specific Configuration and Operation

• The second message has the status code set to SSDSI_FAILURE (0x62).

If geographic addressing is being used, the SSDSI_BRD_RMVD message will use the

physical board ID in the board_id field, and the SSDSI_FAILURE message will use the

same logical board ID in the board_id field. If PCI addressing is being used, the

board_ids will be the same for both messages.

The application should note that the board has been disabled. The ssdh module will

reject any further messages to be sent to the board.

Note: Due to the limitations of this mode, only the replacement of a failed board by a board of the

same type is supported. Any additional boards added to a running system after reboot will

not be recognized.

3.7 High Speed Link Operation

High Speed Link (HSL) operation is possible in one of two modes:

• Unstructured mode, where there is no framing of the data steam:

— For T1, all 193 bits are used giving a data rate of 1.544 Mbit/s.

— For E1, all 256 bits are used for signaling giving a data rate of 2.048

Mbit/s.

• Structured mode, where the data stream is framed as for conventional SS7:

— For T1, 8 bits in each of 24 timeslots are available for signaling.

— For E1, timeslot 0 is used for framing and 31 timeslots are available for

signaling.

The implementation supports the use of both 7-bit and 12-bit sequence numbers as a

run-time configuration option.

The number of HSL links supported depends on the number of signaling processors on

a board as detailed in Table 8:

Table 8. High Speed Link Support on Dialogic

SS7HD Network Interface

Boards

Dialogic

Board Type

Board Characteristics

HSL Links Supported

SS7HDPD4TEW

PCI, 4 port, 2 signaling processor

SS7HDCS8W

cPCI, 8 port, 1 signaling processor

SS7HDCD16W

cPCI, 16 port, 2 signaling processors

SS7HDCQ16W

cPCI, 16 port, 4 signaling processors

SS7HDCN16W

cPCI, 16 port, 0 signaling processors

SS7HDED4TEQ

PCI Express, 4 port, 2 signaling processor