Selection of the correct isdn gateway

[matteocomi]

Hi all, I'm new to the vcs, so I'm sorry if the question could be banal.

We've got a Cluster made up by 2 vcs-c placed in 2 differet regional sites and one ISDN  gateway for every site.

When we try to place an ip to isdn call it starts from the gateway of the side in which there is the master vcs, so the question is: how can we route the call out through the correct site gw?

This is the solution we thought:

the dial plan is 12xxx for one site and 13xxx for the other sites, so a CPL could filter the source alias adding a prefix configured on every isdn gw of every site routing the call in the correct way.

Are there other cleaner ways to do it? Remember that we don't want to change the users habit, so they mustn't add additional prefix.

Thanks in advance for your answers.

[Martin Koch · Accepted solution]

If you build a cluster, see it as one VCS. You might hit  limitations if you try using them for seperated regions.

Dedicated (clusters of) vcs in each are the cleaner way.

Besides that, yes, having a cpl matching on the source, a local sub zone or something else which can

seperate the endpoints could route your specific sets of endpoints to specific isdn gws.

[matteocomi]

yes, at the end 2 subzone, CPL matching on them, and different prefix for each isdn gateway