tek

I have an IP Office 406 (1.4(22)) with 3 x 30 POT modules (3.4(22)), 1 ETSI PRI and LAN connection at our central site. At a small remote office I have an IP Office 401 (1.3(34)) with 1 BRI (ETSI, BT Highway) and LAN connection.

At the moment the two are linked with a VoIP 'line' via ADSL connections. Both sites have voice networking enabled and so learn extension information from the other. All calls from the smaller site are routed via the VoIP line to cut down on call costs and 'anonymise' calls. This is working OK, but the line drops out quite frequently as a result of ADSL congestion.

I have just had Home Highway - ETSI ISDN - installed at the smaller site with a package that gives us unlimited free calls of up to an hour in length - as a registered charity keeping costs to a minimum is very important to us. Basically I need to set up the swithes so that they continue to work the same way as they do using the ADSL VoIP line, but using the ISDN line as the data bearer to improve call quality.

I have set up a service, line and IP route at the smaller office, and the matching RAS, user, line, incoming call route and IP route at the larger. The smaller office initiates an ISDN call to the larger office but it looks like this is rejected for some reason I don't understand.

Can anyone give me some additional hints and tips because I can't think of anything else to try? Also, is this the best way of setting up this link or is there a better alternative?