ATT DEFINITY Communications System Generic 3V4 Instructions Manual

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
2. Calls Across Multiple Switchesbbbbbbbb
This section presents several scenarios for calls routed, transferred, or
conferenced across switches.  Figure A-1 shows the VDNs, vectors, splits, and
extensions for the following scenarios. Each switch has its own ASAI link, but
ASAI links are not shown in the figure.
NOTE:
Section 7 provides examples of calls between switches using UUI.
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SWITCH A
1. Queue...

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
External Call to VDN, Answered by Station
and Transferred to a VDN on Another
Switch
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This scenario shows the call flow for an incoming ISDN PRI call to VDN 5678
that is answered by extension 4555 in ACD split 3333 (see Figure A-2.) The
agent at extension 4555 manually transfers the call to VDN 1222 in switch B.
Extension 1567 in ACD split 1444 answers the call at switch B.
The scenario shows the agent at...

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
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SWITCH A
VDN 5678 Incoming Call
call_id=37Vector J1. Queue to Main
Split 3333
2. Wait 10 Secs
3. Announcement
4. Stop
ISDN PRI
...
ACD Split
3333
x4555ACD Split
1444Vector N
1. Queue to Main
Split 1444
2. Wait 30 Secs
3. Announcement
4. Goto Step 2 call_id=88 VDN 1222
SWITCH B
x1567
...
call_id=45
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Figure A-2.  Call Flow for Blind Transfer to Another Switch
A-26...

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
(Switch B) (Switch A)
External Call to VDNs answered by ACD Agent, blind transfer to VDN on Another Switch
Host
Switch A Switch BHost
Event Notif Request (CRV=98)
(VDN=5678)
Event Notif ACK
Call offered to VDN 5678 event
Queued Event
Alerting Event
(call delivered to agent)
Connected Event
Hold Event
Transfer Event
Drop Event
(trunk disconnects.  The
caller disconnects before the
Call Ended Event trunk between A and B...

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
External Call to VDN, Answered by Station,
and Transferred to a Station on Another
Switch
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This scenario shows the call flow for an incoming non-ISDN call to VDN 5678
that is answered by extension 4555 in ACD split 3333 (see Figure A-3). The
agent at extension 4555 does a consultation transfer to extension 1567 on switch
B. That is, the transfer is completed after the agent on extension 4555 talks to
the...

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
(Switch B) (Switch A)Host
Switch A Switch BHost
Event Notif Request
(VDN=5678, CRV=98)
Event Notif ACK
Call offered to VDN 5678 event
Queued Event
Alerting Event
Connected Event
Hold Event
Transfer Event
Drop Event
Call Ended Event
Incoming call
Agent places call on hold
Domain Control Request
(extension 1567, CRV=45)
Alerting Event
Connected Event
Drop Event
Drop Event
Agent calls x1567 on Switch B
Agent transfers call...

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
External Call to Lookahead Interflow VDNbbbbbbbbbbbbbbb
This scenario shows the call flow for an incoming ISDN PRI call to VDN 5008
that looks ahead to VDN 1111 on switch B (see Figure A-4). The first lookahead
interflow attempt is denied by switch B. The second lookahead interflow attempt
is accepted by switch B and the call is delivered to and answered by extension
1567 in ACD split 1444.
Note that switch A is not...

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
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...
x4909ACD Split
3999 Incoming Call
call_id=74
SWITCH A
Vector L
1. Queue to Main
Split 3999
2. Wait 30 Secs
3. Route to 1111
4. Goto Step 2 VDN 5008ISDN PRI
VDN 1111
SWITCH B
...
ACD Split
1444
x1567
1. Goto Step 3 if
Agents Available 

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
(Switch B) (Switch A)Host
Switch A Switch BHost
Event Notif Request (VDN=5008)
Event Notif ACK
Call offered to VDN 5008
Queued Event
Alerting Event
Connect Event
Drop Event
Call Ended Event
Incoming call
Interßow occurs
Event Notif Request (VDN=1111)
Event Notif ACK
Call goes to step 2 and LAI again (queued in split 3999)
(from ISDN ALERT message)
ISDN trunk disconnect
(VDN 5008 event notif assoc)
Event Notif Request...

Call Scenarios and Applicationsbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
External Call to VDN, Answered by a Local
Station, and Transferred to a Lookahead
Interflow VDN
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This scenario shows the call flow for an incoming ISDN PRI call to VDN 5678
that is answered by extension 4555 in ACD split 3333 and subsequently
transferred to lookahead interflow VDN 5008 (see Figure A-5).  The call is
accepted by the receiving switch (switch B), waits in queue until the vector
announcement (VDN...