Its a CCM service parameter. I just checked it on one of the POD. Following is what it says:
Allow Peer to Preserve H.323 Calls : This parameter determines whether Cisco CallManager allows the peer H.323 endpoint to try to preserve active H.323 calls by not sending a Release Complete message to the peer H.323 endpoint when the TCP connection is lost between Cisco CallManager and the far endpoint, such as a Skinny Client Control Protocol [SCCP] IP phone. When connectivity is lost, the H.225 and H.245 TCP connection is torn down but Cisco CallManager does not send the Release Complete message so that the peer H.323 endpoint can attempt to preserve the media path. Valid values specify True (do not send the Release Complete message to the peer H.323 endpoint when the far endpoint’s connectivity with Cisco CallManager is lost) or False (send the Release Complete message to the peer H.323 endpoint when the far endpoint’s connectivity with Cisco CallManager is lost, which will resulting the call being terminated). This is a required field. Default: false. H225 Block Setup Destination : This parameter determines whether --- On Wed, 3/11/09, Yung Hung <yh...@corporacionits.com> wrote: From: Yung Hung <yh...@corporacionits.com> Subject: Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve To: "Christopher Clouse" <christopherc_56...@hotmail.com>, "mmailb...@yahoo.com" <mmailb...@yahoo.com>, "Cliff McGlamry" <cl...@mcglamry.net>, "Scott ODonnell" <scott.odonn...@gmail.com> Cc: "ccie_voice@onlinestudylist.com" <ccie_voice@onlinestudylist.com> Date: Wednesday, March 11, 2009, 1:09 AM I’m looking for this parameter and I cannot find it. Which version are you running? From: Christopher Clouse [mailto:christopherc_56...@hotmail.com] Sent: Tuesday, March 10, 2009 12:41 PM To: Yung Hung; mmailb...@yahoo.com; Cliff McGlamry; Scott ODonnell Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve I believe the service parameter that we're looking for is 'Allow Peer to Preserve Call'. ~Chris From: Yung Hung Sent: Tuesday, March 10, 2009 12:04 PM To: mmailb...@yahoo.com ; Cliff McGlamry ; Scott ODonnell Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve What do you have setup on your service parameter in CCM “Allow TCP KeepAlives For H323*” From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Balamurugan Singaram Sent: Tuesday, March 10, 2009 1:20 AM To: Cliff McGlamry; Scott ODonnell Cc: ccie_voice@onlinestudylist.com Subject: Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve IPExpert V3 Mock lab workbook, related to h.323 gateway I am able to see below command for call preservation: voice service voip h323 no h225 timeout keepalive even after update this command, my call are not preserved when the both ccm SUB and PUB goes down, I am missing something, could please some one light me. Thanks, --- On Tue, 10/3/09, Scott ODonnell <scott.odonn...@gmail.com> wrote: From: Scott ODonnell <scott.odonn...@gmail.com> Subject: Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve To: "Cliff McGlamry" <cl...@mcglamry.net> Cc: "Kumar, Narinder" <narinder.ku...@uxcg.com.au>, mmailb...@yahoo.com, ccie_voice@onlinestudylist.com Date: Tuesday, 10 March, 2009, 12:09 PM I think you need the "no h225 timeout keepalive" configured under the "voice service voip / h323". This will allow the call to stay up after the GW stops receiving keepalives from the CM. http://www.cisco.com/en/US/products/sw/voicesw/ps2169/products_configuration_guide_chapter09186a0080558061.html H.323 Gateways and SRST On H.323 gateways, when the WAN link fails, active calls from Cisco IP phones to the PSTN are not maintained by default. Call preservation may work with the no h225 timeout keepalive command, but call preservation using the no h225 timeout keepalive command is not officially supported by Cisco Technical Support. Under default configuration, the H.323 gateway maintains a keepalive signal with Cisco CallManager and terminates H.323-to-PSTN calls if the keepalive signal fails, for example if the WAN link fails. To disable this behavior and help preserve existing calls from local IP phones, you can use the no h225 timeout keepalivecommand. Disabling the keepalive mechanism only affects calls that will be torn down as a result of the loss of the H.225 keepalive signal. For information regarding disconnecting a call when an inactive condition is detected. see the Media Inactive Call Detection document. On Tue, Mar 10, 2009 at 2:30 AM, Cliff McGlamry <cl...@mcglamry.net> wrote: I believe there is also a service parameter command to allow call preservation in the event CCM goes down under h.323 in the CCM Service parameters. Seems like I've seen it there.... ----- Original Message ----- From: Kumar, Narinder To: mmailb...@yahoo.com ; ccie_voice@onlinestudylist.com Sent: Tuesday, March 10, 2009 2:18 AM Subject: Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve Need to add some more commands From: ccie_voice-boun...@onlinestudylist.com [mailto:ccie_voice-boun...@onlinestudylist.com] On Behalf Of Balamurugan Singaram Sent: Tuesday, 10 March 2009 4:43 PM To: ccie_voice@onlinestudylist.com Subject: [OSL | CCIE_Voice] h.323 gateway config & call preserve Hi, For h.323 gateway config & call preserve in BR1 site the following config are ok, please some one comment on h.323 gateway config & call preservation ? voice class h323 1 h225 timeout tcp establish 3 voice class codec 1-----------------------------------Need to add this codec preference 1 g711ulaw codec preference 2 g711alaw codec preference 3 g729r8 interface loopback 0 h323-gateway voip bind srcaddr 172.27.x.x h323-gateway voip interface -----------------------------------Need to add this dial-peer voice 10 voip destination-pattern 2...$ session target ipv4:172.3.64.100 dtmf-relay h245-alphanumeric no huntstop voice-class h323 1 voice-class codec 1-----------------------------------Need to add this no vad ! dial-peer voice 11 voip destination-pattern 2...$ session target ipv4:172.3.64.101 dtmf-relay h245-alphanumeric preference 1 voice-class h323 1 voice-class codec 1-----------------------------------Need to add this no vad ! dial-peer voice 9 pots destination-pattern 9T port 0/0/0:23 ! on Service parameter: Stop routing on Unallocated number flag - false Thanks New Email addresses available on Yahoo! 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