User`s guide

Dialogic
®
System Release 6.0 PCI for Windows
®
Release Update, Rev 62 — January 30, 2008 256
Dialogic Corporation
• Dialogic
®
Voice API Library Reference
Note: The online bookshelf has not been updated for this feature. The following observations are
worth noting:
• The description of the dx_reciottdata( ) function in the Dialogic
®
Voice API Library
Reference does not currently show the RM_ISCR and RM_VADNOTIFY modes.
• The Events chapter in the Dialogic
®
Voice API Library Reference does not currently
include the TDX_VAD event.
• The Dialogic
®
DM3 Architecture PCI Products on Windows
®
Configuration Guide
does not currently include information about the 0x416 parameter.
1.73 Trunk Preconditioning
The Service Update provides the capability for trunk preconditioning, which allows boards
to be placed in an alarm state during board initialization.
These enhancements are applicable to the following boards:
• Dialogic
®
DM/V, DM/V-A, DM/V-B, and DM/VF Media Boards
• Dialogic
®
DM/N Digital Telephony Interface Boards
• Dialogic
®
DM/IP Boards
1.73.1 Feature Description
While Dialogic
®
Boards are starting up and are connected to network trunks, there is a
period where the digital network interface begins transmitting frames and idle CAS
signaling. This state can exist for a minute or more before the board and application
program are prepared to handle calls. During this time, a service provider (CO) may begin
alerting (ringing) for inbound calls, but the calls cannot be answered because the board or
application has not finished initializing. This results in lost calls.
A new configuration parameter, referred to here as the Initial Alarm State parameter,
allows you to place trunks in an alarm state while the board is being initialized. This
prevents the service provider from sending calls. The alarm clears and the trunks go in-
service as soon as the first gc_OpenEx( ) (or gc_Open( )) function for a trunk is executed
in the application. (For T1 trunks, alarms clear after a 15-second delay to verify valid
signaling.)
The possible values for the new Initial Alarm State parameter are: