D/240SC-T1 ESF off hook with all ABCD bits?

From: Greg Nesbitt

I have an application which accepts inbound calls via a T1 robbed bit line. We're having a problem where sometimes there's no voice cut-through, or the call drops after a few minutes. The carrier (AT&T) examined the problem and thinks it is occurring because the Dialogic is going off hook with only A&B bits (i.e. ABCD=1100).

When I watch an inbound call with a test set, the following sequence occurs:

- Idle ABCD=0000 in both directions
- Network goes off-hook ABCD=1111
- Dialogic winks ABCD=1111 then ABCD=0000
- Network dials the DID
- Dialogic goes off hook ABCD=1100

Previously the Dialogic was winking with ABCD=1100 (A&B bits only) but I fixed this by changing spandti.prm parameter 0C to F0.

Is there a similar parameter for off hook that I can change? Any other suggestions?

We are using the DNA 3.3 drivers, but would not be adverse to trying 5.xx if that would help.

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Received on Wed Jul 07 11:10:22 2004