nhammer

Recently I have had calls from one extension that have shown up for 9 hours 59 minutes...they are all to the same number going out on one trunk which is a FX line. I spoke with the person who sits at that extension and he says he has never called this number (I believe him...he has no reason to hide it).

There are 7 calls within the last week all made at different times per day sometimes once sometimes twice per day.

I had this problem when we first put in our definity switch but that was because I had to have our CO change some of my trunks from loop start to ground start...but this is on an FX trunk...and it is ground start. I am not seeing long calls on anything else except this one station to this one phone number.

Any Ideas on what I can dig into?

Oh, FYI...this information is being reported through my call accounting software (Micro-Call) ...are there logs in my switch I can verify this info??



Thanks!

Nathan Hammer

nexSIP

I assume he is calling these numbers but the trunk is not releasing it.

In the trunk form did you change the line from loop start to ground start? and check your disconnect supervision on outbound calls.

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nhammer

yes, Trunk is ground start.

He insists that he has not called this number...and he was at his desk during these times so I doubt anyone else dialed it.

Sorry to sound like a rookie, but what is a 'disconnect supervision on outbound calls'?:confused:

nexSIP

Your trunk has to be hanging for 7 hours. Are you sure the call was not incoming?

If it was for sure outbound, a temp fix would be to deny the call in ARS.


Disconnect supervision means the CO has the ability to release a trunk when the party at the CO disconnects, and the system is able to recognize the release signal. In general, a CO in the United States provides disconnect supervision for incoming calls but not for outgoing calls. Many other countries do not provide disconnect supervision on either incoming or outgoing calls.

The system must provide the assurance that at least one party on the call can control the dropping of the call. This avoids locking up circuits on a call where no party is able to send a disconnect signal to the system. Internal operations must check to be sure one party can provide disconnect supervision. An incoming trunk that does not provide disconnect supervision is not allowed to terminate to an outgoing trunk that does not provide disconnect supervision.

beckga1

If you are using "aca" a "list measurements aca" will give you both long and short holding times for trunks. This will let you know if the trunk is hung or you have another problem.