try this
http://ccieash.wordpress.com/2010/06/25/h323-call-preservation/
might help you...
--- On Wed, 6/1/11, CCIE Voice <ccievoicelab.c...@gmail.com> wrote:
From: CCIE Voice <ccievoicelab.c...@gmail.com>
Subject: Re: [OSL | CCIE_Voice] Call Preservation Issue
To: "amit batra" <batraji...@yahoo.com>
Cc: ccie_voice@onlinestudylist.com
Date: Wednesday, June 1, 2011, 4:34 AM
Sorry, should have been more clear. Using H.323.
The call preservation feature of H323 applies when the gateway loses
connectivity to Call Manager only, so that the RTP stream is preserved to the
phone, but here the RTP stream itself is being interrupted.
On May 31, 2011, at 6:58 PM, amit batra <batraji...@yahoo.com> wrote:
What type of protocol you are using ? H323 or MGCP ?
With MGCP i dont think if there is any way ..
H323 can preserve call ..
--- On Wed, 6/1/11, CCIE VOICE <ccievoicelab.c...@gmail.com> wrote:
From: CCIE VOICE <ccievoicelab.c...@gmail.com>
Subject: [OSL | CCIE_Voice] Call Preservation Issue
To: ccie_voice@onlinestudylist.com
Date: Wednesday, June 1, 2011, 3:03 AM
Hello Experts
An interesting problem to solve for which I'm having a hard time figuring out
the solution myself.
We have a Call Manager node and IP Phones in one location and ingress voice
gateways in other location. Both locations are connected over redundant WAN
links. When one WAN link fails, it takes upto 5 seconds for the redundant WAN
link to kick in. Issue is, if there is an active call between the gateway and
the IP Phone, the call simply drops when a WAN issue occurs. Is there a way to
preserve the RTP stream on the GW itself that can be resumed once the redundant
WAN link takes over?
Any input is appreciated!
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_______________________________________________
For more information regarding industry leading CCIE Lab training, please visit
www.ipexpert.com
Are you a CCNP or CCIE and looking for a job? Check out
www.PlatinumPlacement.com
