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Detailed Call Flow for Converse—VRI Calls
H-10 Issue 4 September 1995
The last set of digits collected before the
converse-on split
step is executed is
still available and may be displayed by an answering agent on the nonconverse
split by using the CALLR-INFO button.
A VRU script can be programmed to continue running after hanging up the voice
line. This after-call work is usually very short, and it may involve either a final
message to a host or a final update to a local database. For this scenario, the
VRU port (channel) is still associated with the running script even though there is
no longer a voice connection.
From DEFINITY’s point of view, the agent (port) is available for the next call. If a
call is delivered to this port, the VRU does not answer the call until the previous
script has completed. As long as the VRU script’s after call work is short in
duration, this poses no significant problem for the VRI feature. However, high
volume VRI applications with lengthy after call work periods should be avoided,
especially if such periods are so lengthy they approach the administered timeout
period on DEFINITY for the Redirection on No Answer (RONA) feature. In such a
case, RONA might think the VRU ports are faulty and might therefore start to take
these ports out of service.
DEFINITY Switch Data Collection
NOTE:
This phase is in effect only if the VRU returns information to DEFINITY.
Once the VRU script has completed and vector processing is reactivated, the
returned digits are collected and processed by vector commands in the usual
manner. Since the digits must be collected by a
collect digits
command, data
may be returned and processed only if the Call Prompting option is enabled.
The data returned can consist of multiple parts. For example, the VRU could
return a stream of seven digits in which a single digit success/fail code is
followed by a six-digit account code. For this scenario, the
converse-on
step
would be followed by a sequence of vector steps including two
collect digits
steps. The first
collect digits
step would collect one digit and then check the
result code; the second
collect digits
step would collect the six-digit account
code.
Any touch-tone digits dialed by the calling party during the data collection phase
are discarded, do not cause data corruption, and are not collected as dial-ahead
digits by DEFINITY.