AT&T DEFINITY Generic 3 Manuale Utente
Functions and Examples
Issue 4 September 1995
8-9
The following is an example of an inflow vector that might be used by a receiving
switch:
switch:
Figure 8-3.
Receiving Switch Inflow Vector
Step 1 of this inflow vector checks the inflow thresholds. The
goto step
command
in Step 1 checks the number of queued calls in split 1. If the number of such calls
is greater than 5, a branch is made to the
is greater than 5, a branch is made to the
busy
command in Step 6. If executed,
the
busy
command denies the call, and the receiving switch returns a call denial
message to the sending switch. The sending switch, in turn, drops the Look-
Ahead Interflow call attempt and then continues vector processing at the next
vector step.
Ahead Interflow call attempt and then continues vector processing at the next
vector step.
On the other hand, if the number of queued calls in split 1 is less than or equal to
5, the receiving switch returns a call acceptance message to the sending switch,
and call control is passed to the receiving switch. Thereafter, the call is queued
to split 1 in the receiving switch (Step 2). Once queued, the caller receives the
appropriate announcement in Step 3 and is then provided with music until the
call is answered by an agent or abandoned by the caller (Steps 4 and 5).
(Remember, the
5, the receiving switch returns a call acceptance message to the sending switch,
and call control is passed to the receiving switch. Thereafter, the call is queued
to split 1 in the receiving switch (Step 2). Once queued, the caller receives the
appropriate announcement in Step 3 and is then provided with music until the
call is answered by an agent or abandoned by the caller (Steps 4 and 5).
(Remember, the
stop
command halts vector processing but does not drop the
call.)
NOTE:
If the sending switch does not receive a call acceptance or call denial
message within 120 seconds (G3 switches) or 10 seconds (G2 or network
switches) after the Look-Ahead Interflow call request, the Look-Ahead
Interflow attempt is dropped, and the sending switch continues vector
processing at the next step.
message within 120 seconds (G3 switches) or 10 seconds (G2 or network
switches) after the Look-Ahead Interflow call request, the Look-Ahead
Interflow attempt is dropped, and the sending switch continues vector
processing at the next step.
Tandem Switch Configuration
Tandem Look-Ahead Interflow is implemented by using
route-to
commands that
contain external destinations that route over ISDN-PRI facilities. This
configuration is illustrated as follows:
configuration is illustrated as follows:
1. goto step 6 if calls-queued in split 1 pri h > 5
2. queue-to main split 1 pri h
3. announcement 4000
4. wait-time 2 seconds hearing music
5. stop
6. busy
2. queue-to main split 1 pri h
3. announcement 4000
4. wait-time 2 seconds hearing music
5. stop
6. busy