ISDN connection drops?

[IanelarAzure]

I am a desktop technician that supports Home Users for a local Health System. I have one single home user on ISDN that currently connects to our fractional T1, and we are trying to move her over to a local ISP's ISDN service.

I have no previous knowledge of ISDN, but a good understanding of basic networking and routing. Here is where I stand:

I am testing everything from an ISDN line we have here at the hospital that has been proven to work with this ISP before. I am using the users credentials and settings, ofcourse with the correct SPIDs and DNs.

From the console of the Cabletron CSX103(also tried another CSX103 and also a CSX100 bought brand new) I call my remote router and it connects, authenticates, but the connection drops and gives the following error:

# 06/04/2008-13:25:38:ISDN: call 32770 proceeding on B1
06/04/2008-13:25:41PP: user not found in remote database
06/04/2008-13:25:41PP: Authorization failed
06/04/2008-13:25:42:ISDN: Call disconnected - Normal Clearing (cause 16)

I have contacted the ISP, tested new equipment, and am just at a loss.

Any ideas?

 

[ISDNman]

Is it possible that the ISP only accepts calls from certain pre-configured phone numbers?

What I am asking, is it possible the problem is that it see an unauthorized caller ID?

Since you now have an ISP in the loop you should be able to hand this over to their tech support people!

Good luck

If you ask a better question you will get a better reply. Be specific so we can help!

 

[IanelarAzure]

Is it possible that the ISP only accepts calls from certain pre-configured phone numbers?

No, according to IgLoo they accept all connections. It is wide open.

What I am asking, is it possible the problem is that it see an unauthorized caller ID?

I have confirmed the username and password with the ISP multiple times. We even have another users UN and PW to test. They both follow the same format, and we know the other UN and PW works elsewhere. Part of me thinks that this is something on the ISPs end, that they are missing something somewhere.

Since you now have an ISP in the loop you should be able to hand this over to their tech support people!

Unfortunately IgLoo only offers the number to dial, and the username and password. Their support stops there. Everything else they leave up to the phone company(AT&T) and the user themselves. They have not been the best help.

 

[ISDNman]

Since you have proven this is a PPP problem it has nothing to do with the ISDN.

The ISDN layer is getting a disconnect and is disconnnecitng as requested - cause 16; normal call clearing.

If the ISP will not support their own PPP server then your only option will be to beg/borrow/buy a PPP protocol analyzer to determine what is going on at the PPP session layer to present to the ISP for repair.




If you ask a better question you will get a better reply. Be specific so we can help!

 

[IanelarAzure]

I understand what you are saying ISDNman. I always thought in the back of my mind it was an ISP issue, but my lack of understanding of the technology could never really prove that.

What our company decided to do to get the user off the CSX line we pay for was set her up a personal T1. This is actually cheaper than paying for the CSX line we currently have.

Thanks again for all the help.