User`s guide

Dialogic
®
System Release 6.0 PCI for Windows
®
Release Update, Rev 62 — January 30, 2008 259
Dialogic Corporation
brd_SendAliveEnable( ) function, the board treats it as a host failure. When this occurs,
the board takes its network interface out-of-service, thus preventing the network from
offering calls to the failed system. The board also releases/drops all active calls and frees
associated memory.
The network interface is taken out-of-service by sending an Alarm Indication Signal (AIS)
toward the network. This is the ITU recommended mechanism for informing the CO or
network that the trunk is not available. In addition, for the T1 ISDN protocols that support
it, the Q.931 maintenance message SERVICE (Out-Of-Service) is also used to inform the
network that the channels are no longer available. The AIS alarm (and SERVICE
message when applicable) are cleared automatically when the trunk is put in-service
using gc_OpenEx( ) or gc_Open( ) on the trunk device (dtiBn) or a channel (dtiBnTm) in
any given trunk, following the host or application crash.
In the event that an AIS alarm was being transmitted on some other trunks prior to the
crash, then the AIS alarm on those trunks will not be cleared when the other trunks are
put back in-service. In this case, the application needs to clear the alarm using the Global
Call Alarm Management System (GCAMS) functions; see the Alarm Handling section in
the Dialogic
®
Global Call API Programming Guide for information.
1.74.2 Documentation
The online bookshelf provided with Dialogic
®
System Release 6.0 PCI for Windows
®
contains information about all system release features including features for application
development, configuration, administration, and diagnostics.
For more information about the Dialogic
®
Board Management API, see the Dialogic
®
Board Management API Library Reference. There are no API changes because of this
feature; the only changes are:
• Support for E1/T1 CAS and E1 ISDN protocols in addition to T1 ISDN on DM3 Boards
• Sending an AIS alarm for all protocols rather than a protocol-specific out-of-service
condition
For more information about GCAMS, see the following documents:
• Dialogic
®
Global Call API Programming Guide
• Dialogic
®
Global Call API Library Reference
1.75 New Boards Supported
The following new boards are supported in Dialogic
®
System Release 6.0 PCI for
Windows
®
with this Service Update:
• Dialogic
®
D30E1P Voice Board
• Dialogic
®
D/4PCIU4S Media Board
• Dialogic
®
D/42-NE2 PCI PBX Integration Board