Trunk Flash without trunk to trunk transfer?

[fortunate2001]

We have an S8300 R014 with a trunk group made up of three OPX lines from a nearby Definity PBX. These are analog loop start station lines from the Definity, and in the S8300 are built as a two way trunk group.

When a call comes in to the S8300 via this path, they often want to transfer the call back to a station in the Definity. If they use the regular transfer button, and select the same TG path back, the call goes through, but after the call the two trunks never disconnect and are hosed until the TG is busied and released. (This is problem # 1 - not sure if there even is a solution for this)...

To avoid locking up trunks that way, we enabled trunk flash to the TG, and added a flash button to the set. Now they can 'flash', hear new dial tone from Definity, enter extension # to transfer to and release. This works great, and of course is the right way to clear the trunks.

So, now my question is this: Is there any way to disable the ability to transfer using the (first) wrong way??

I set Disconnect Supervision IN - to No in an effort to disable trunk to trunk transfer on this TG. However, that also disabled the trunk-flash capability. (an interaction not mentioned in the feature admin manual... but it makes sense in a way...)

Here is the config of the TG:

-------------------------
Group Number: 78 Group Type: wats CDR Reports: y
Group Name: ac6040 COR: 1 TN: 1 TAC: 778
Direction: two-way Outgoing Display? n
Dial Access? y Busy Threshold: 255 Night Service:
Queue Length: 0 Country: 1 Incoming Destination: 590
Comm Type: voice Auth Code? n
Trunk Flash? y

Trunk Type: loop-start











Group Type: wats Trunk Type: loop-start

TRUNK PARAMETERS

Outgoing Dial Type: tone Incoming Dial Type: tone
Trunk Termination: rc Disconnect Timing(msec): 140

Sig Bit Inversion: none
Analog Loss Group: 6 Digital Loss Group: 11
Trunk Gain: high

Disconnect Supervision - In? n Out? y Cyclical Hunt? n
Answer Supervision Timeout: 10 Receive Answer Supervision? n
Administer Timers? y








TRUNK FEATURES
ACA Assignment? n Measured: none
Maintenance Tests? y
Data Restriction? n

Abandoned Call Search? n
Suppress # Outpulsing? n

Charge Conversion: 1
Decimal Point: none
Currency Symbol:
Charge Type: units Receive Analog Incoming Call ID: disabled
Per Call CPN Blocking Code:
Per Call CPN Unblocking Code:

Outgoing ANI: Ds1 Echo Cancellation? n






ADMINISTRABLE TIMERS
Send Incoming/Outgoing Disconnect Timers to TN465 Ports? n
Incoming Disconnect(msec): 500 Outgoing Disconnect(msec): 500
Outgoing Dial Guard(msec): 1600
Incoming Glare Guard(msec): 1500 Outgoing Glare Guard(msec): 1500


Ringing Monitor(msec): 5200 Incoming Seizure(msec): 500
Outgoing End of Dial(sec): 10 Outgoing Seizure Response(sec): 5
Programmed Dial Pause(msec): 1500
Flash Length(msec): 540





END TO END SIGNALING
Tone(msec): 350 Pause(msec): 150

OUTPULSING INFORMATION
PPS: 10 Make(msec): 40 Break(msec): 60 PPM? n

ATMS THRESHOLDS
TTL Type: 105-w-rl Far End Test No:
TTL Vendor: TTL Contact:
Trunk Vendor: Trunk Contact:
Trunk Length:
MARGINAL UNACCEPTABLE
Min Max Min Max
1004 Hz Loss: -2 21 -2 21

-Dev +Dev -Dev +Dev
404 Hz Loss: 9 9 9 9
2804 Hz Loss: 9 9 9 9

Maximum C Message Noise: 55 55
Maximum C Notched Noise: 74 74
Minimum SRL-HI: 0 0
Minimum SRL-LO: 0 0
Minimum ERL: 0 0

Allow ATMS Busyout, Error Logging and Alarming? n