User guide

Dialogic

DSI Development Package for Linux - Release Notes Release 6.2.9

2.3 ssdm – Enhanced Tracing Capabilities

This release adds support for tracing of messages received from the SS7MD

board when in AAL5 monitoring mode. Tracing is enabled at run-time by

setting Trace Masks using a new message ATM_MSG_TRACE_MASK. Further

details are available on request.

2.4 MST - Enhanced Tracing Capabilities

This release adds support for tracing of messages and events received and

generated by MST. Tracing is enabled at run-time by setting Trace Masks

using a new message MST_MSG_TRACE_MASK. Further details are available

on request.

In addition, MST will also automatically report any badly formatted messages

received from the network using the Selective Trace mechanism.

3 Changes

3.1 SYSTEM.TXT – Default NUM_MSGS

The example system.txt file now uses a value for NUM_MSGS of 5000

(instead of 10000 previously). This is to avoid unnecessarily consuming large

amounts of memory in small, low throughput systems.

3.2 ss7.dc6 - SS7MD Monitoring Failures (IPY00092738)

Under certain circumstances, when operating the SS7MD in MTP2 monitoring

mode, reception of over-length frames could cause the board to lock-up. Also

when operating in AAL5 monitoring mode, reception of CRC errors could

cause the board to lock-up. Typically this behavior would have been triggered

as a result of errors or frame slips on the E1/T1 interface. The ss7.dc6 code

file (V1.13) within this release corrects both these issues.

3.3 ssdm - MTP2 Retransmission Buffer Size

The previous release artificially limited the capacity of the MTP2

Retransmission Buffer for the SS7MD board when in Basic Error Correction

Mode to 400 octets. This has been corrected so the capacity is now up to

2000 octets.

3.4 ssdm - Reading SS7MD Statistics

This release corrects an issue which, under certain circumstances, could

cause statistics request messages (ATM, LIU & MTP2) for the SS7MD board to

be rejected or lost.

3.5 ssdm - Board Watchdog

This release implements a heartbeat mechanism to ensure rapid detection

and shutdown of SS7MD boards in the event of failure.