[asterisk-users] [SOLVED + EXPLANATION]: Strange ISDN-problem with incoming calls out of the same city

[Philipp Kempgen]

Stefan Guenther wrote:

> <QUOTE>
> When I dial the number of our client, located in another town, I get a
> connection to the asterisk server, I can talk to my client or listen to
> his mailbox.
> 
> If someone in the town of this client calls him, he gets the ISDN error
> "service not available".
> 
> With some more debugging we saw what happens with these specific calls.
> For some reason local calls and calls from a few other cities cause
> trouble, because asterisk doesn't get the whole number that has been
> dialed. If e.g. someone from the same town dials 123456, asterisk only
> gets  12345 or 1234. This extension doesn't exist in the dialplan and so
> the call fails. And this is not a single failure, it happens every time.
> </QUOTE>
> 
> We were finally able to track down this problem and solve it.
> I'm not sure whether it is only related to ISDN, but maybe some of you
> find this explanation helpful.
> 
> This description deals with the German Telecom, as far as I know Colt 
> Telecom handles things the same way.
> 
> There are two ways to transfer a telephone number, either digit by digit 
> or as a whole block. Mobile phone company e.g. always transfer number as 
> a block.
[...]

overlapdial=yes in zapata.conf solved it for me
(Digium PRI card).

Regards,
  Philipp Kempgen