asterisk users - Aug 2006 - Can not hear the telco System Announcement

Hi, all. I am from Singapore, we deployed a few PABX based on Asterisk. 
Here in Singapore there are two Teleco providing E1 pri service, we 
encountered a strange problem : when calling a number that is 
unavailible or line suspended,  one of the E1 provider keep the call 
ongoing, because there are system announcement like "The line currently 
is unavailible, The line is busy now", while the other E1 provider will 
just cutoff the line, our customers get confused using our PABX. I 
checked with the teleco, they said their PRI behavior followed the 
standard, it was our PABX to tell the telco side to hangup the call, I 
am not sure about the PRI singnaling part, just wonder any of you 
encountered the same problem in other countries, or any configuration 
needs be set in the zapata.conf  to make these behaviors consistent.

Regards,
Liangliang

On 9/1/06, Xue Liangliang <xueliangliang@gmail.com>
wrote:
> Hi, all. I am from Singapore, we deployed a few PABX based on Asterisk.
> Here in Singapore there are two Teleco providing E1 pri service, we
> encountered a strange problem : when calling a number that is
> unavailible or line suspended,  one of the E1 provider keep the call
> ongoing, because there are system announcement like "The line
currently
I have something similar on a european E1. I do think this has
something to do with the PBX.. (asterisk in this case)

I have the same 'issue' on a BRI (ISDN) interface. The 'old' PBX
(a
classic PBX) did sent out the telco announcement.

I have tried changing priindication, but this didn't help. I can see
the hangup_cause and can play prompts according to the hangup_cause,
but I would prefer using the telco announcement.

cheers..