PABX and router gateway

[phamthecong]

Dear all,

I have a case as below

----------ISP PSTN---------------

| |

PABX1 -- RouterA------ROUTERB---PABX2

What I would like to do is that when the link between RouterA and routerB is available, all calls from SiteA to Site B will be forwared to RouterA and when the link is down, all call from PABX1 should go to Site B via PSTN link,

Could anyone help me to configure RouterA and routerB so that the case above will be achieved?

Thanks

[shaun.connor]

You should be able to create 2 dial peers with a preference 1 for the primary pointing to the router and 2 for the secondary pointing to the pots dial peer....but it will also depend on the digits you are sending....you may have to perform some digit translation

[phamthecong]

Hi Shaun,

let say, Site A, I have a phonenumber of 1234, and site B of 5678. How could you do digit translation?

thanks