Thanks Dan...what about h323 call preservation? When there is a active call through h323 gateway and the primary UCM goes down call drops as expected, unless I configure following call preservation command.
voice class h323 1 h225 timeout tcp establish 3 call preserve limit-media-detection Now if the requirement doesn't indicate one way or another I would still think that this "call preserve" command is very important because what if the proctor at the time of marking notice a call drop then we could very easily lose points. Interestingly, I haven't seen this command in any of the ip expert solutions. thanks -----Original Message----- From: Daniel Rodriguez [mailto:drodrig...@fidelus.com] Sent: Saturday, 31 October 2009 1:23 PM To: Aamir Panjwani; 'ccie_voice@onlinestudylist.com' Subject: Re: [OSL | CCIE_Voice] mgcp switchover: graceful or immediate I would say it depends on what I'm being asked to do. If nothing is specified in terms of MGCP failover/switchback behavior, nothing - I would leave it at default. If I'm being asked to configure MGCP failover behavior so that my MGCP gateways don't switchback until I'm confident my server or connection to my server is stable, I might choose scheduled. If I'm asked to configure it so that all call features (fwd, conf, etc) are available throughout the duration of the call, I'd choose graceful. Hope that helps. Dan ----- Original Message ----- From: ccie_voice-boun...@onlinestudylist.com <ccie_voice-boun...@onlinestudylist.com> To: ccie_voice@onlinestudylist.com <ccie_voice@onlinestudylist.com> Sent: Fri Oct 30 22:14:06 2009 Subject: [OSL | CCIE_Voice] mgcp switchover: graceful or immediate I have notice in same of the ip expert labs they have configured “ccm-manager switchback immediate” command and in other case cases it is left at default which is “ccm-manager switchback graceful”. If I just tested both scenarios 1) Graceful mode: when there is active call and primary UCM comes back online, mgcp gateway waits for the active call to end before switching back to primary UCM as expected 2) Immediate mode: when there is active call and primary UCM comes back online, mgcp gateway straightaway registers with primary UCM and the phone display says “Temp Fail” but the call doesn’t drop which is a bit of surprise for me, I thought call would drop as well. So if the requirement doesn’t indicate one way or another would you leave at default (graceful mode) or manually configure “ccm-manager switchback immediate” ?? thanks ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
