(ASCEND) TNT ISDN woes

[Kerrin Pine <kerrinp@chariot.net.au>]

Hi,

We migrated around 60 channels (combination of modem and ISDN) from an old 
old Max 4000 to one of our TNTs.

- PRIs are ETSI ISDN (Net 5).
- The TNT is running 7.0.22
- TNT is multishelfed with one other unit, has 20 x 48modem-56k-cards, 1 
4ether2-card, 3 8E1-cards and 1 HDLC-card

I found most ISDN customers could connect but some can not, their CPE varies:

- Cisco 2503 router
- Cisco 5200 access server
- some sort of 3com ISDN modem with Windows95
- Intel ISDN router
- Portmaster 3
- Internal NetJet ISDN cards in a Linux server

Doing q931 debugging on the client end shows a normal connection sequence, 
with the network advising a successful connect. The client equipment 
acknowledges the connect, then the network issues a disconnect with the 
code "Normal call clearing".

Now, I THOUGHT this was just code issues - but wait!

* An ISDN customer dialing the new equipment prior to the upgrade now 
cannot connect -- ie. has to have something to do with the equipment

* Some customers that could connect after the upgrade now can't, and vice 
versa. It seems that the TNT is limiting the number of ISDN connections 
that it can handle simultaneously!! Ie. when some ISDN customers disconnect 
from the TNT, others are able to connect.

Is there some setting I am missing?

Can someone talk me through debugging the TNT ISDN side? (Beer is available 
;-))

Regards
Kerrin

--
Kerrin Pine (kerrinp@chariot.net.au)   |  Web: http://www.chariot.net.au/
Network Operations Manager, CCNA       |  Web: http://www.kerrin.com/
Chariot Internet Limited               |  Ph : (+61)  08 8291 8888
214 Greenhill Road, EASTWOOD SA 5063   |  Fax:        08 8291 8822

"I stayed up all night playing poker with tarot cards. I got
a full house and four people died." -- Steven Wright


++ Ascend Users Mailing List ++
To unsubscribe:	send unsubscribe to ascend-users-request@bungi.com
To get FAQ'd:	<http://www.nealis.net/ascend/faq>