[Asterisk-Users] Debugging zaphfc + PBX integration

[Tim Robinson]

In the UK BT do not provide NT1 seperately and the BT ISDN2e grey boxes
only provide emergency power as they do not have a mains connection.

So I do not believe power is the issue...I strongly suspect you need the 
100 ohm terminators and you need to check that your ISDN BRI crossover 
cable is wired correctly.  i.e. the RX pins on one RJ45 connect to the 
TX pins of the other.  Have a look at

http://users.adamant.net/~isdn/s0.doc

Stick with it - it will work and you will be pleased!

Rgds
Tim Robinson
Basingstoke, UK

Gavin Hamill wrote:
> On Friday 15 April 2005 22:50, Olivier MONNET wrote:
> 
>>Hello,
>>  It can be that you need power on your ISDN bus.
>>I had this problem with a SIEMENS 3070 connected to a HFC-S card in NT
>>mode.
>>I have just added an ISDN NT to power the bus:
>>just follow the instructions here:
>>http://home.foni.net/~jolly1/download/PBX4Linux-2.5.html
>>2.2 Connect ISDN telephones to your ISDN card.
> 
> 
> Olivier, thank you. This is very interesting... but it begs the question... 
> where does one go to find broken NT1 boxes?! We have three ISDN2e NT1s but 
> they are all active and working, I don't think I would be very popular if I 
> removed one 'to play with' :)
> 
> Cheers,
> Gavin.
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