[Serusers] fr_inv_timers affect on inbound/outbound calling

[Steve Blair]

Hello:

  This is a question for the entire list. We are trying to use SER/SEMS
to replace Centrex service with an Octel voice mail system.  Therefore
we need to deal with Centrex user expectations. One of their expectations
is how many rings a caller should expect to hear before an unanswered
call goes to voicemail. Here is the problem.

  If we set fr_timer and fr_inv_timer sufficiently large enough to handle
the various outbound calling scenarios then the inbound calls have
a ring-count-to-voicemail count of about 8. Large enough to disorient
callers who are use to the Centrex service behavior.

  I have not found a way to balance outbound call setup delays as high
as 26 seconds without also increasing the ring-count-to-voicemail count
beyond a "reasonable", user acceptable level.

  It seems that we are running into a user expectation problem but it is a
real problem for which I need to find an answer. Does anyone have any
experience dealing with this type of issue? If so how did you address it?

Thanks,Steve