Nortel Meridian Meridian 1 Scripting Manual page 359

October 2007
Return type
This intrinsic returns a value, in seconds, to the script.
Conditions that increase the wait time
The EXPECTED WAIT TIME can become longer as a contact waits, which
means that there is no guarantee that the contact waits no longer than the
announced wait time. Extending the expected wait time can occur due to any of
the following conditions:
Voice contacts with different priorities are queued to any given skillset.
Thus, new incoming contacts of higher priority are inserted in a queue in
front of contacts of lower priority. A new, lower-priority contact may
initially hear that the wait time is 40 seconds and, a minute later, can be
advised that the wait time is now 5 minutes.
A burst of traffic can come into the system (including a contact that is of
higher priority) after the first wait time is given, which increases the
contact's wait time.
Agents servicing the queue can log off (to have lunch, for example) and
substantially change the expected wait time for the contacts that came into
the queue before they logged off. If the number of agents in the skillset
queue is not used in the algorithm, this situation takes several sample
periods to filter through to an adjusted expected wait time.
Nortel recommends that you use only the EXPECTED WAIT TIME intrinsic in
single-priority systems to avoid these conditions.
ATTENTION
Scripting Guide for Communication Server 1000/Meridian 1 PBX
Because the expected wait time can increase while a caller
waits, play the expected wait time to callers once.
Intrinsics
359