Figure 7-3: Megaco-911 Call Start Flow Diagram - AudioCodes Mediant 2000 User Manual

SR
Idle (ON_HOOK)
Idle (ON_HOOK)
OFF-HOOK
Wink (140-290msec)
Send address
OFF_HOOK
The OFF-HOOK indicates that the caller
can not disconnect the call. (Operator hold)
Send address
User's Manual

Figure 7-3: MEGACO-911 Call Start Flow Diagram

CAMA Type to 911 switch
With Operator Hold
PSTN/PBX
psCASSeizure()
EV_SEIZE_ACK
PCIIFDial (to DSP)
EV_DIAL_ENDED
(From DSP)
EV_PSTN_CALL_CONNECTED
PCIIFDial (to DSP)
EV_DIAL_ENDED
(From DSP)
Call In Progress
MEGACO
Modify=gws0c1{
signals{bcas/sz}}
Notify=gws0c1{bcas/sza}
Modify=gws0c1{
signals{bcasaddr/addr{
ds="A911E", ac=MF}},
Events=1{g/sc}}
Notify=gws0c1{g/sc}
Notify=gws0c1{bcas/ans}
Modify=gws0c1{
signals{bcasaddr/addr{
ds="A0544274446E", ac=MF}},
Events=1{g/sc}}
Notify=gws0c1{g/sc}
126
Mediant 2000
MGC
Note that MEGACO has no knowledge
about the type of the address sent to it.
Document # LTRT-69805