Doc. trasm. da: Pg: 4 ‘ i ~-—1 20 a rte CITT No 7 nt tI 42 0d calling originating transit transit terminating catled terminal local exch exch 1 exch 2 local exth terminal Mitial address Message (1AM) \/ p acknowledge 4) get u} information Subsequent address eSSage (SAM) ' call proceeding dress aompiete (ACN) alerting accepted answered 7 answer (ANM) OO Connect acknowledge conversation/daia transfer awitchpath completed Figure 5.22 Example of ISDN call. REATINGS FROM XENT —
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