Dialogic 6.2 manual Call Teardown Processing, November 310

Loop Start Signaling

event = 1 in the IISDN_ROBBED_BIT_DATA structure. This message is sent after the fixed pause timer expires. When the timer expires, the host receives an L3L4mSEIZE_COMP message if send_ seize_comp_event = 1 in the IISDN_ROBBED_BIT_DATA structure.

FXS ground start supports transmitting digits other than dial pulse digits. If called_party_digits = 0 in the L4L3mCALL_REQUEST that started the call, the module waits in outdialing state indefinitely.

During that time, another device connected to the Brooktrout module over the TDM bus (such as a digital tone generator) is used to outpulse digits to the network.

After the digits are transmitted, the module waits for an answer timer to expire (if timed_answer_supervision = 1). When the timer expires, the host receives an L3L4mCONNECT indicating the call is connected.

Figure 44 shows how the module makes an outgoing call over an FXS ground start trunk.

Call Teardown Processing

In this mode, an incoming call teardown cannot be detected; the host must determine when the call is inactive (that is. no data) and initiate an outgoing call teardown. For an outgoing call teardown, refer to Figure 45.

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