I tested it today. The gateway commands are not enough. My call was
preserved only after I enabled the service parameter.
--- 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: "Cliff McGlamry" <cl...@mcglamry.net>, "Sergio Polizer"
<spoli...@hotmail.com>, "ccie_voice@onlinestudylist.com"
<ccie_voice@onlinestudylist.com>
Date: Wednesday, March 11, 2009, 6:27 AM
Sergio,
I just checked, and on mine (4.1(3)SR1) the parameter isn’t there
either, so I guess we need to upgrade to latest SR.//
*From:* ccie_voice-boun...@onlinestudylist.com
[mailto:ccie_voice-boun...@onlinestudylist.com] *On Behalf Of *Cliff
McGlamry
*Sent:* Tuesday, March 10, 2009 6:42 PM
*To:* Sergio Polizer; ccie_voice@onlinestudylist.com
*Subject:* Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve
Sergio,
The parameter you need is NOT visible unless you hit the advanced
settings button at the top of the CallManager Service
Parameters page first. Here's a screen shot:
----- Original Message -----
*From:* Sergio Polizer </mc/compose?to=spoli...@hotmail.com>
*To:* ccie_voice@onlinestudylist.com
</mc/compose?to=ccie_vo...@onlinestudylist.com>
*Sent:* Tuesday, March 10, 2009 6:09 PM
*Subject:* Re: [OSL | CCIE_Voice] h.323 gateway config & call
preserve
I apologize for h323/call preserve command. It was presented at
12.4T as was posted later.
I have tested call preservation at h323 gw but it is not working
for me also.
As my servers does not show "Allow Peer to Preserve H.323 Calls"
parameter, I can not test right now.
So, May We assume that Call Preservation at H323 Gw requires:
At CM:
"Allow Peer to Preserve H.323 Calls" set to true
"Allow TCP KeepAlives For H323" set to false
At GW:
voice service voip
h323
no h225 timeout keepalive
Thanks, Sergio.
------------------------------------------------------------------------
Date: Tue, 10 Mar 2009 13:10:11 -0700
From: nice_cha...@yahoo.com
To: yh...@corporacionits.com; mmailb...@yahoo.com;
cl...@mcglamry.net; scott.odonn...@gmail.com;
christopherc_56...@hotmail.com
CC: ccie_voice@onlinestudylist.com
Subject: Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve
I just checked on one of the POD. This parameter it there.
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, Christopher Clouse
/<christopherc_56...@hotmail.com>/* wrote:
From: Christopher Clouse <christopherc_56...@hotmail.com>
Subject: Re: [OSL | CCIE_Voice] h.323 gateway config & call preserve
To: "Yung Hung" <yh...@corporacionits.com>, mmailb...@yahoo.com,
"Cliff McGlamry" <cl...@mcglamry.net>, "Scott ODonnell"
<scott.odonn...@gmail.com>
Cc: ccie_voice@onlinestudylist.com
Date: Wednesday, March 11, 2009, 1:24 AM
Configuration of H.323 VoIP call preservation enhancements for
WAN link failures involves configuring the *call
preserve* command. If you are using Cisco Unified Communications
Manager, you must enable the Allow Peer to Preserve H.323 Calls
parameter from the Service Parameters window.
I pulled this out of the CM6 SRND, but I do know that it exists
in CM4. I'm running sr8a in my lab right now.
~Chris
*From:* Yung Hung <http://mc/compose?to=yh...@corporacionits.com>
*Sent:* Tuesday, March 10, 2009 2:39 PM
*To:* Christopher Clouse
<http://mc/compose?to=christopherc_56...@hotmail.com> ;
mmailb...@yahoo.com <http://mc/compose?to=mmailb...@yahoo.com> ;
Cliff McGlamry <http://mc/compose?to=cl...@mcglamry.net> ; Scott
ODonnell <http://mc/compose?to=scott.odonn...@gmail.com>
*Cc:* ccie_voice@onlinestudylist.com
<http://mc/compose?to=ccie_vo...@onlinestudylist.com>
*Subject:* RE: [OSL | CCIE_Voice] h.323 gateway config & call
preserve
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
<http://mc/compose?to=mmailb...@yahoo.com>; Cliff McGlamry;
Scott ODonnell
*Cc:* ccie_voice@onlinestudylist.com
<http://mc/compose?to=ccie_vo...@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 <http://mc/compose?to=yh...@corporacionits.com>
*Sent:* Tuesday, March 10, 2009 12:04 PM
*To:* mmailb...@yahoo.com
<http://mc/compose?to=mmailb...@yahoo.com> ; Cliff McGlamry
<http://mc/compose?to=cl...@mcglamry.net> ; Scott ODonnell
<http://mc/compose?to=scott.odonn...@gmail.com>
*Cc:* ccie_voice@onlinestudylist.com
<http://mc/compose?to=ccie_vo...@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
<http://mc/compose?to=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
<http://mc/compose?to=ccie_vo...@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 keepalive*command. 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
<http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123t/123t_2/gt_icd.htm>Detection
<http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123newft/123t/123t_2/gt_icd.htm>
document.
On Tue, Mar 10, 2009 at 2:30 AM, Cliff McGlamry
<cl...@mcglamry.net <http://mc/compose?to=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
<http://mc/compose?to=narinder.ku...@uxcg.com.au>
*To:* mmailb...@yahoo.com
<http://mc/compose?to=mmailb...@yahoo.com> ;
ccie_voice@onlinestudylist.com
<http://mc/compose?to=ccie_vo...@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
<http://mc/compose?to=ccie_voice-boun...@onlinestudylist.com>
[mailto:ccie_voice-boun...@onlinestudylist.com
<http://mc/compose?to=ccie_voice-boun...@onlinestudylist.com>]
*On Behalf Of *Balamurugan Singaram
*Sent:* Tuesday, 10 March 2009 4:43 PM
*To:* ccie_voice@onlinestudylist.com
<http://mc/compose?to=ccie_vo...@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
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