Status: Accepted
Owner: baranowb
CC: oleg.kulikoff, amit.bhayani
Labels: Type-Enhancement Priority-High Component-ISUP Roadmap-Fix
New issue 1814 by baranowb: Add Overlap type of address specification(SAM)
http://code.google.com/p/mobicents/issues/detail?id=1814
Overlap Signaling
Overlap signaling sends portions of the number in separate messages as
digits are collected from the originator. Using overlap signaling, call
setup can begin before all the digits have been collected. When using the
overlap method, the IAM contains the first set of digits. The Subsequent
Address Message (SAM) is used to transport the remaining digits. Figure 8-7
illustrates the use of overlap signaling. Local exchange A collects digits
from the user as they are dialed. When enough digits have been collected to
identify the next exchange, an IAM is sent to exchange B. When tandem
exchange B has collected enough digits to identify the next exchange, it
sends an IAM to exchange C; exchange C repeats this process. After the IAM
is sent from exchange C to exchange D, the destination exchange is fully
resolved. Exchange D receives SAMs containing the remaining digits needed
to identify the individual subscriber line.
