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Outgoing call processing (fixed pause mode), Call teardown processing – Dialogic 6.2 User Manual

Page 287

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Immediate Start/Fixed Pause Signaling

November 2009

287

Outgoing Call Processing (Fixed Pause Mode)

During an outgoing call, the host receives an L3L4mPROGRESS in

response to the L4L3mCALL_REQUEST to start the call. The

module waits a period of time (determined by the fixed pause timer)

before sending digits. When the timer expires, the host receives an

L3L4mSEIZE_COMP message if send_seize_comp_event = 1 in the

IISDN_ROBBED_BIT_DATA structure. After transmitting digits,

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 30

shows how the module makes an outgoing call over a fixed

pause mode trunk.

Call Teardown Processing

For an incoming call teardown, refer to

Figure 46

at the end of this

section; for an outgoing call teardown, refer to

Figure 47

at the end of

this section.