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Immediate call release

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trevkosupport@gmail.com
Posted: Thu Mar 27, 2008 8:40 am
Guest
Hello and thank you for your invaluable help!

The problem:
I am receiving a call that I need to instantly drop, without
connecting. After I receive a SETUP message, I send a RELEASE
COMPLETE. However, the party receiving the reply is not dropping the
call immediately, but instead waits for a timeout, before it destroys
the call.

My request:
What is the proper way of dropping a call, after a SETUP message has
been received?

Regards, del_lover
 
trevkosupport@gmail.com
Posted: Thu Mar 27, 2008 9:08 am
Guest
Another trouble is that, in my Cisco ISDN switch + TCL scrpit, I can't
send Setup ACK without connecting the call.
 
trevkosupport@gmail.com
Posted: Thu Mar 27, 2008 9:16 am
Guest
I am going to try:
SETUP----------------------->
<-------------------CALL_PROC
<------------------DISCONNECT
RELEASE--------------------->
<------------RELEASE_COMPLETE

with cause: User Busy
 
trevkosupport@gmail.com
Posted: Thu Mar 27, 2008 9:29 am
Guest
Ok, I think it won't work for Cisco and TCL...
 
Graham Murray
Posted: Sun Apr 06, 2008 3:16 pm
Guest
"trevkosupport@gmail.com" <trevkosupport@gmail.com> writes:

Quote:
My request:
What is the proper way of dropping a call, after a SETUP message has
been received?

Is it a point-to-point or point-to-multipoint line? If it is
point-to-multipoint then it cannot be done as the exchange has to wait
(time T309 if I remember correctly) in case another device on the S-bus
accepts the call. If it is point-to-point then you should just ensure
that you do not send an ALTERTing message in response to the SETUP.
 
Charles K. Summers
Posted: Wed Apr 09, 2008 5:48 pm
Guest
Del_lover,

Graham Murray is correct. If the network-side has sent the SETUP
message, and it is in multipoint, you can not terminate the connection
from the point-of-view of the network because some other device on the
passive bus may accept the call. You have terminated your own side.
The network will continue with T303 procedures to make sure that the
SETUP was received by one, or more, terminals.

If you are in point-to-point, then a REL_COM is the proper way to refuse
an incoming call although you can wait for timers to expire.

Regards,

Charles

trevkosupport@gmail.com wrote:
Quote:
Hello and thank you for your invaluable help!

The problem:
I am receiving a call that I need to instantly drop, without
connecting. After I receive a SETUP message, I send a RELEASE
COMPLETE. However, the party receiving the reply is not dropping the
call immediately, but instead waits for a timeout, before it destroys
the call.

My request:
What is the proper way of dropping a call, after a SETUP message has
been received?

Regards, del_lover
 
 
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