Can I have Remote Call Forward (RCF) on a ceased ISDN2e circuit?
Remote Call Forward can be applied to a ceased ISDN2e circuit on the main number, and on any single number DDIs. It cannot, however, be applied to any DDI range or part of a range, even if the main number is part of that range. One option is to have CNI on a DDI range. If the ISDN2e is on P-MP, then you can have RCF on each of the MSNs as well.