Dialogic
®
DSI SS7G41 Signaling Server – SIU Mode Release Notes
Release 2.4.1
3
Release 2.4.1
1
Overview
This is a maintenance release which includes changes and corrections as
detailed below.
This is the first release since Release 2.3.9 and it is fully backwards
compatible with that previous release.
1.1
Applicability
This release is suitable for all users.
2
Changes
2.1
MTP3 – STP Operation
This release includes important corrections to operation of MTP3 in STP
configurations when using C-links. These changes ensure reliable generation
of preventative TFP messages prior to routing over a link set and generation
of TFA messages after stopping using a link set to reach the destination.
2.2
ISUP – ISP_MSG_MAINT_IND
When operating with 128 circuit groups, ISUP will no longer generate
ISP_MSG_MAINT_IND (0x070a) messages.
2.3
ISUP – Application Heartbeat
The ISUP Application Heartbeat mechanism has been enhanced to require two
failed attempts prior to declaring the host as failed. Each attempt allows 4
seconds for receipt of a response. When operating with more than 128 circuit
groups, the period between successive heartbeats is reduced (to 7 seconds)
and the rate at which Circuit Groups are automatically blocked is increased
(to 100 groups per second). This ensures better detection and faster
response in the case of high capacity systems.
2.4
M3UA – Error Indications
This release limits the maximum number of event reports from M3UA to one
per DPC every 10 minutes when it is unable to send a message to a
Destination because it is unavailable or unknown.
2.5
M3UA –Load sharing
M3UA now correctly load shares across multiple associations in the case that
there are between 5 and 16 associations to a Remote Application Server or
Signaling Gateway. Previously the maximum supported was 4 associations.
2.6
M3UA – SCON without congestion level
This release will accept an SCON message with no congestion level parameter
and handle it as indicating congestion rather than no congestion.
