Have established an ICT between 4.1.3 and 6.1 clusters. Calls from the 6.1 to the 4.1.3 go through no problems. Calls from the 4.1.3 to the 6.1 work but frequently are subject to a 10sec delay before the call is established!
Its an explict route pattern on the 4.1.3 to the 6.1 with only a single way between them i.e. the ict.
Anyone any ideas?