When we were testing failover among multiple machines, we found that stopping Asterisk does not cause the carrier to see the trunks as unavailable. They continue to send inbound calls over PRI. Only killing zaptel or powering down the server made the carrier roll over to another trunk group. This definitely is a gap in our business continuity plan.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alistair Cunningham Sent: Wednesday, November 01, 2006 8:31 AM To: Asterisk Developers Mailing List Subject: Re: [asterisk-dev] Re: How to busy out PRI channels? Eric "ManxPower" Wieling wrote: > Alistair Cunningham wrote: >> Many enterprise products have an option to quiesce a trunk. Any >> inactive B channels are disabled immediately, and any active channels >> are disabled as soon as the call on them finishes. When all B >> channels on a trunk are disabled, the trunk is too. NFAS groups work similarly. >> >> When I was an engineer working mostly with IBM Websphere Voice >> Response, and we wanted to take a machine down, we would quiesce the >> trunk(s) as above, then wait until only 1 or 2 calls were left, then >> cut off these remaining calls. We felt this was the best compromise >> between cutting off as few callers as possible, and minimising the >> time the system was unavailable to new callers. >> >> A facility to do this in Asterisk would be most welcome. > > "stop gracefully" does something similar. It's similar, but not quite the same in a clustered environment. When the B channels are busied out, this tells the upstream switch to route calls to another machine in the cluster. Stop gracefully will still accept calls from the switch (I believe, it's been a while since I tested this). Alistair Cunningham +1 888 468 3111 +44 20 799 39 799 sip:[EMAIL PROTECTED] http://integrics.com/ _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
