I know this is basic, but have you checked your E1 for any slips or errors ? Have you tried checking each of your isdn channels show isdn service ? You could also test your DSP`s...
Hi,Is this for all users or only a problem between two phones ?Can phone A transfer to another phone other than B ?Can phone A dial phone B`s extension internally ?Is it intermittent or with every call ?
Hi,Trace>configuration, select which traces you want to turn on and ensure they are set to detailed. Once this is done you will need to install and use RTMT to collect the trace files.
