[Asterisk-Users] "Glare" condition - How well does asterisk handle?

[W. Kevin Hunt]

Well that certainly seems to say there can be glare, but a read of the
q.931 protocal stack seems to suport that it's not possible.  If I were
a leser man, I could say a snide remark about that if you click the home
icon, it is apparent the document is referring to a driver and s/w for
the Microsoft operating system to implement the PRI protocol ;)

W. Kevin Hunt
CCIE #11841
www.huntbrothers.com
 
-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of Scott
Stingel
Sent: Tuesday, May 25, 2004 9:44 PM
To: asterisk-users at lists.digium.com
Subject: RE: [Asterisk-Users] "Glare" condition - How well does asterisk
handle?

A little more research on this:

I found a Dialogic flow diagram that seems to indicate what happens when
glare occurs on an IDSN line.  So it looks like perhaps it can occur?
Re-phrasing my original question:  "Does the asterisk PRI driver
properly re-try an outgoing call that is dropped due to a glare
condition?" 

Note the chart entitled "Glare (call collision)":
http://resource.intel.com/telecom/support/releases/winnt/sr60cpci/onldoc
/htm
lfiles/gcisdn/app_isdn.htm

Regards...


Scott M. Stingel
President,
Emerging Voice Technology, Inc.
Palo Alto California & London England
www.evtmedia.com 

-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com] On Behalf Of Scott
Stingel
Sent: Tuesday, May 25, 2004 11:54 AM
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] "Glare" condition - How well does asterisk
handle?

Hi-

I have an upcoming application that requires use of PRI channels that
are primarily used for high-volume incoming traffic, but that are to be
used for outbound calling as well.  Of course, one option is to have
dedicated outbound channels reserved, but this is an inefficient use of
channel resources.

Normally PBX's are designed to have the CPE yield to an incoming call if
a particular channel is seized by both ends at the same time (a
condition known as "glare"), but I'm wondering if anyone has real-world
experience with asterisk to say how well this is handled.

Thanks
Scott Stingel
 
Scott M. Stingel
President,
Emerging Voice Technology, Inc.
Palo Alto California & London England
www.evtmedia.com 


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