Okay, next question: which PRI are you using? Is it Digium-based or Sangoma hardware? If the former then use the libpri method; the latter use freetdm. I think they're both covered on the wiki. You need to get an ISDN trace on the d-chan to see what is actually being sent to/from telco. 

-MC

Sent from my iPhone

On Jul 7, 2010, at 7:57 PM, Tony Tin <tony.tin@noahmedia.com.hk> wrote:

Thanks for your help.

It's a 4ESS IDSN and the carrier does provide disconnect supervision, is there any way to bypass it ?

Regards,
Tony


On Thu, Jul 8, 2010 at 7:14 AM, Michael Collins <msc@freeswitch.org> wrote:
It depends on where the "hangup signal" comes from. Is this an analog line? If so, does the carrier provide disconnect supervision? It's entirely possible that the other end isn't doing a good job of telling FreeSWITCH that the call is over.

-MC

On Tue, Jul 6, 2010 at 10:35 PM, Tony Tin <tony.tin@noahmedia.com.hk> wrote:
Hi,

When I use OpenZAP channel to originate a call, after the called party hangup the phone. It takes freeswitch around 40 seconds to catch the hangup signal and stop the dial plan. I'm wondering whether there is a way to shorten that duration. Thanks.

Regards,
Tony



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