I had installed the new IOS 12.4(11)XW, to my voice gateway tp support the immediate for the connection plar. It is ok, but i had a problem when I try to make a call throught ISDN E1. I think there is a bug in theis IOS the errore is :
Cause i = 0x82E4 - Invalid information element contents.
Is there is any new version wich support the immediate command without bugs...