I've got a Cisco 3845 device acting as an MGCP voice gateway. We modified the config so it can be used as an MTP (Media termination point) but since then it's been crashing continuously. It's a CUCM controlled MTP gateway. When the router crashes, it comes up with"System returned to ROM by error - an Illegal OpCode exception" followed by a memory reference. If I do a show region, that memory address lies within a valid memory range. Any ideas or help would be appreciated ?