4.7. Setting and Retrieving Quality of Service (QoS) Thresholds

When using Global Call with other technologies (such as E-1 CAS, T-1 Robbed Bit etc.), alarms are managed and reported on the network device. For example, when gc_OpenEx( ) is issued, specifying both a network device (dtiB1T1) and a voice device (dxxxB1C1) in the devicename parameter, the function retrieves a Global Call line device. This Global Call line device can be used directly in Global Call Alarm Management System (GCAMS) functions to manage alarms on the network device.

When using Global Call with IP technology, alarms such as QoS alarms, are more directly related to the media processing and are therefore reported on the media device not on the network device. When gc_OpenEx( ) is issued, specifying both a network device (iptB1T1) and a media device (ipmB1C1) in the devicename parameter, two Global Call line devices are created:

• The first Global Call line device corresponds to the network device and is retrieved in the gc_OpenEx( ) function.
• The second Global Call line device corresponds to the media device and is retrieved using the gc_GetResourceH( ) function. This is the line device that must be used with GCAMS functions to manage QoS alarms. See the Global Call Application Developer's Guide for more information about GCAMS.

Note: Applications must include the ipmlib.h and gcipmlib.h header files before Global Call can be used to set or retrieve QoS threshold values.

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