I have a single 2611XM with two BRI interfaces. I want to be able to transfer external calls back to ISDN (hairpin). All my configuration attempts have failed so far. I always get a fast busy signal after dialing the last digit of the external number.
I have set a transfer-pattern .T, another equaling my external number. I have tried all transfer system types, no sucess at all.
when debugging dialpeers I do not see any output while typing in the transfer number, the same result with debug voice ccapi inout.
I am using CUE 4.0 (12.4(11)T).
Any hint is appreciated.