Toshiba VP 300 Installation Instructions Manual page 274

5-116 Installation and Maintenance Manual
19
87
49
50
Toshiba VP Systems Release 7.1 July, 1994
TIMEOUT BEFORE LOOKING FOR RINGBACK OR BUSY
After dialing an extension number, the system waits the amount of
time specified in Application Delay 19 before looking for ringback,
busy, or fast busy tone.
Use — Some PBXs send a partial ringback or busy tone before
starting the ringback or busy tone cycle. That would cause the VP 300
to fail because the partial tone would not comply with any of the tone
windows established in the Application Delay Table. Modify
Application Delay 19 to a longer time value.
WAIT LONGER BEFORE LOOKING FOR RINGBACK
Application Delay 87 only works in conjunction with COS Attribute
30 — STATION IS ON ANOTHER PBX, WAIT LONGER BEFORE
LOOKING AT TONES. After dialing an extension number, the
system waits the amount of time specified in Application Delay 87
before looking for ringback, busy, or fast busy tone.
Use — In some PBX environments two or more PBXs might be
connected via tie lines, so users on a local PBX can dial a station
number on a remote PBX and be routed directly to it without going
out over the public network. The ringback tone from the distant PBX
is delayed while the PBXs set up the call. Without Attribute 30 and
Application Delay 87, the VP 300 detects the longer silence as answer
and attempts to transfer the call, causing a failure. This COS attribute
and application delay combination allows the VP 300 to wait before
looking for ringback tone when calling certain stations.
MAXIMUM TONE ON PERIOD FOR ANY TONE
This delay must be set to a value equal to the largest value for any of
the following delays in the Application Delay Table: 53, 61, 63, 69 or
73.
Use — When the system looks for ringback, busy or fast busy tone it
uses this delay to determine if the TONE ON is a valid tone. If the
TONE ON is longer than this delay, the system assumes an answer
condition has occurred.
MINIMUM TONE ON PERIOD FOR ANY TONE
This delay must be set at a value less than the value for any of the
following delays: 54, 62, 64, 70 or 74.
Use — When the system looks for ringback, busy, or fast busy tone, it
uses this delay to determine if the TONE ON is a valid tone. If the
TONE ON is less than this delay, the system assumes an answer
condition has occurred.