For Springware voice boards with on-board analog loop start devices (for example, D/41ESC, D/160SC-LS), a voice device and an analog loop start device comprise a single channel. Although these devices can be addressed separately, all analog signaling is processed by the associated voice device; analog signaling (ring detection and loop current detection) events are not transmitted over the SCbus. In resource sharing applications using the voice resources of a voice board with on-board analog loop start devices, the analog loop start device associated with a shared voice resource is disabled. See Chapter 4. Resource Allocation and Routing for more information.
The Global Call line device ID (LDID) is a single ID that represents the combination of the voice resource and analog loop start (or digital) interface resource that work together to establish and to tear-down calls.
DM3 analog boards are comprised of separate voice devices and analog loop start devices, much like a digital board. As such, these devices are treated separately, with no inherent association between them. Analog loop start devices are denoted as dti devices, just like network time slots are on digital boards. When doing gc_OpenEx( ) on a DM3 analog device, it is necessary to supply the analog loop start device name as well as a voice device name, or attach a voice device to the analog loop start device after gc_OpenEx( ).
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