NEX 7400 ICS 120

[KBatch]

I know. She's an oldie. But a goodie.

Can anyone tell me why calls generated from within the PABX - dialing out from the PABX, calling the number that is programmed to divert on no reply to the PABX are disconnected by the PABX after the 6 rings instead of ringing at the PABX, while calls made outside of the PABX (i.e. via a mobile phone or external land line) ring six times and then trigger a call into the PABX which can then be answered?

The scenario is that a client in a different part of the city diverts to the PABX on no reply but using the PABX to check the diversion results in disconnection at the 6th ring, as if the receiving number is not active.

Many thanks in advance for your help/thoughts.

 

[OzzieGeorge]

Firstly I will assume you are in Australia as the product had the name IVS (not 7400 ICS in the US). I am wondering whether this is a carrier issue rather than a PABX issue but I dint 100% understand your problem as described!

 

[KBatch]

Yes, OzzieGeorge - NZ actually. Thank you for responding. Perhaps I can explain it better.

If I dial 1 for an outside line then dial my client's number that is diverted to me on no reply, his number rings 6 times and then should hit my PABX but instead it disconnects.

If I dial my client's number from my mobile or private land line it rings six times and then connects with my PABX which I can then answer.

I have 2 ISDN channels. I suspect a carrier problem also but it's pretty hard to get them to admit it. They blame my switch. What do you think?

 

[OzzieGeorge]

Which end has the PABX? And have you tried it from any other lines?

 

[OzzieGeorge]

Ok so I'm pretty slow today (too many Bintangs, I'm currently sat by a pool in Bali). You have tried other lines so the next step would be for you to get the carrier to monitor the ISDN and you make some test calls. They should then be able to see the clear down codes for your test calls and that should give you a better indication of where the problem lies!

 

[KBatch]

Thanks OzzieGeorge. I'll do that and let you know what they say.

 

[mitelsx2000]

Sound the same old story with a Telco in NZ!!!

I had the same problems with a primary rate on a 120ICS.

Its about saving phone and not providing a service (UFB hurting them bad!!!). they wanted me to look at the codes and alerts, which are very limited on this model. They do the same with poor residential customers, who are not Telephone savvy

After a few harsh works and explaining I HAVE BEEN IN THE INDUSTRY FOR 35 YEARS. they came out and realised if was a copper network issue with some cable jointers working on the cables next door.

Have you reset the basic rate sets, some time there is a network disruption which does not allow them to sink back in properly with the network or Pabx.

Are both basic rates up and showing the same status?

What part of NZ are you in, I may be able to help or put you in contact with a local person who can.

 

[KBatch]

Thank you Mitelsx2000

I'm North Shore, Auckland.

I have reset the NT units and the PABX. I don't believe the problem is with any of my kit - although of course I could be wrong - but I do believe that one of the top (if not THE top) NEC technicians in this country is probably more knowledgeable about my switch than Telco staff who immediately blame my switch every time. He said he has never seen such symptoms attributable to the switch.

I recognise the frustration you express in dealing with the telcos in NZ. They've been very difficult to deal with over the 25 years I've been in this business. I should have simply opened a takeaway bar!

 

[mitelsx2000]

Hi Kbatch,

Have you got a basic rate phone butt tester, to see if you can dial out on both channels on the basic rates?

Are both basic rates up and showing the same status? on the NT`S and the trunk card on the Pabx?

Cheers,

Mitelsx2000

 

[KBatch]

Yes, both basic rate cards are showing the same on the PABX and on the NTs and both show 4 red lights when I have successfully transferred two calls or have 4 calls on the go at the same time.

No I don't have a test butt.

As far as I know it is only that one client whose number when dialed from my PABX doesn't come back to my PABX when it should. I can dial out and call 2 of my DDIs and answer them successfully using both cards to capacity.

There is one other client that I can't transfer to if I have already tied up one card, then take a third caller for her and try to transfer it. I get disconnected then too. No problems if her caller is the only one on the switch and in that case I can transfer out to her no problems.

I don't know if they're on different exchanges. They are in Remuera and Morningside.

What do you think?

 

[mitelsx2000]

Hi,

I sounds like they have lost some DDI numbers or some old customer links pointing to a DDI number or pilot number.

You will need to find out what is the DDI Range, from the Telco to confirm the number you are dialing is part of the DDI Range, digits being forwarded through to the Pabx by the Telco.

 

[OzzieGeorge]

I'm doubtful it is a loss of DDI numbers or anything like that as it will work from a different PSTN line. This would indicate that the DDIs are right or it wouldn't get in from there.

 

[KBatch]

Thanks guys, it's good to get advice from people who haven't got an agenda!

The client whose calls ring 6 times then cut off when I dial his number using the PABX tells me that he has a client who has been complaining for some time that when he dials the number he often gets the same result. No other regular clients have complained to him of this effect.

Then there's the one way speech thing. I think that's a crook card in the exchange because I've experienced it over two decades on two different switches but getting the telco to sort it is like pushing a cow pat up a very steep hill with a very sharp pencil!