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Outgoing call processing, Call teardown processing – Dialogic 6.2 User Manual

Page 279

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Wink Start & Delay Dial Signaling

November 2009

279

Outgoing Call Processing

During an outgoing call, the host receives an L3L4mPROGRESS in

response to the L4L3mCALL_REQUEST to start the call. The host

then receives an L3L4mSEIZE_COMP message if send_seize_comp_

event = 1 in the IISDN_ROBBED_BIT_DATA structure. This

message is sent when the module detects a wink from the network,

indicating the network is ready to receive digits. After the digits are

transmitted, the module waits for answer supervision from the

network (indicating the far end has gone off hook) or for an answer

timer to expire (if timed_answer_supervision = 1). When answer

supervision is received or the timer expires, the host receives an

L3L4mCONNECT indicating the call is connected.

Figure 26

shows how the module makes an outgoing call over a wink

start or delay dial trunk.

Call Teardown Processing

For an incoming call teardown, refer to

Figure 46

on

page 314

at the

end of this section; for an outgoing call teardown, refer to

Figure 47

on

page 315

at the end of this section.