[cisco-voip] Configuring dial-on-demand MLPP for remote site?

[Robert Kulagowski]

Lelio Fulgenzi wrote:
> I also believe, and this is what I'm planning on, is you can use MGCP, 
> failover to H323 when you loose the WAN link and then establish the 
> dataconnection to keep going. Calls in progress are lost though.

Well, we have H.323 setup now running 12.4.9T inorder to get call 
preservation, which works pretty well.  I don't think that we'll be 
switching to MGCP / H.323 fallback precisely because we don't want to 
drop calls.

I've asked our Cisco SE if using SIP trunks will give us the benefits of 
caller name delivery _and_ call preservation in case of WAN failure. 
He's still getting back to me.