We deployed a 2820nIPPBX earlier in the year and have just changed the lines over to 2 channels (1 circuit) of ISDN2e with a block of DDIs as SIP was not giving satisfactory call quality. Everything works except CLIP. When we dial in to test we get completely random presentation of digits - i.e. total gobledegook. Line provider assures us that the CLIP is all correct on the lines. Anybody seen this / have an idea what it might be (what we might have missed in configuration) / what the solution is?

We took another PBX to site to test the CLIP and it turns out it wasn't configured correctly by the line provider. All working now except that we have a new problem in that the ISDN DDIs don't work - all incoming calls are routed as if they are coming in on the main bearer number which is to the main hunt group. Any ideas?