sundance-communications.com/forum Forums TDM Business Telephone Systems NEC Telephones & Systems Strange IPK Problem

Have Customer with an IPK that is locking up CO lines 5,6,&7.

System configured with 7 CO lines with Caller-ID, 24 digital sets,and PS-II wireless.

When it happens no station can access any of those line keys. Press any of those keys produces re-order tone. LCD displays "Error".

Press feature key than any of those line keys LCD displays "UNUSED"

Reset CPU by reset button or power off and it clears for few days. Reseting CO line card also clears it.

Have swapped out KSU,CPU,CO card, Station cards,and MIFM card.

Any ideas?

DJ

When the Co's are Locked they are showing red on the Phone's Right? If so, Then I would think that they are Assigned. But at The same Time You said That It say's Error and Unused? Witch mean's Unassigned.Simply resetting the CPU or Co card shouldn't clear this.When you said swapped out KSU,CPU,CO card and Station card's, are those different card's? or moved to different slots.Does the System have a Wireless card for the PS-II?

Also,There Should be a BSU(2)-U card for the ZT Transcever for the PS-II WIreless And CLKG-U on The CPU.

When the system locks up there is no indication on the line keys.

Yes, these cards have been swapeed with replacement cards.

There is a BSU card in the system along with the clock unit on the CPU.

The only card that has not been swapped out is the BSU card.

System is well grounded, and on a UPS also.

DJ

If the System Does Clear after a Reset,I would suspect the Clock Card. If the Problem Happen's Daily,Maybe you could Replace the Clock Card or Disconnect it Temporary to see if the Problem continue's.

If all the hardware has been swapped, I would look at the telco. What do you get on your test set while these CO lines are locked up?

Also, when you swapped out the CPU, did you do a download/upload with SAT? If so, try keying the database by hand on the new CPU. If this clears the trouble, try re-keying the database by hand on the old CPU. ( I know this is a pain, but it's the only way to be sure your database is'nt corrupted)

Have not changed out the clock card yet, waiting on one.

Definetly not a telco prob as that was first thing I checked, Get dial tone every time.

Hand programmed the CPU after it was swapped out, and defaulted twice before programming.

I admit, this one is definetly weird.

DJ